Гербарий БИН РАН - Образцы

FLORA OF VIETNAM Linaceae Tirpitzia sinensis (Hemsl.) Hallier f. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Tan village, Thong (Conifer) Mountain, around point 23º07ʹ40.3ʺN 104º57ʹ11.2ʺE, at elevation 1000-1195 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and coniferous (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Shrub to 3 m tall on exposed mossy rocks. Not common. 19 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 476 (HN, LE01061401 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Convallariaceae Disporum cantoniense (Lour.) Merr. Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23º03ʹ41.5ʺN 104º50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial herb to 1 m tall on shady rocky slope. Flowers dirty violet. Not common. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 650 (HN, LE01061434).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Fabaceae s.l. (Mimosoideae) Archidendron balansae (Oliv.) I.C. Nielsen Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Tree to 30 m tall on steep mountain slope. Not common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1547 (LE 01067138, LE 01067135). Det.: Sawai Mattapha 29.11.2019

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Fabaceae Ormosia integrifolia Aver., sp. nov.** Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet or shrub 2-3 m tall on steep slopes. Flowers white. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 025 (holotype – HN, LE01058078 – photo, isotype – HN). From close O. simplicifolia Merr. & L. Chen (having also simple leaves) this plan differs in distinctly petiolate, narrowly ovate, acute leaves with distinct 3 veins (vs. leaves shortly petiolate, oblong lanceolate, acuminate, with one main vein and pinnate venation) and short inflorecence less than 3 cm long (vs. inflorescence 6–10 cm long).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Taxaceae Taxus chinensis Roxb. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet 3-4 m tall on steep slopes near mountain top. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 024 (HN).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Begoniaceae Begonia cavaleriei H. Lév. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic herb on mossy vertical rocks. Leaves and petioles green, flowers pink, anthers yellow. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 023 (HN, LE01058077 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Myrsinaceae Myrsine semiserrata Wall. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Small shrub in mountain top. Fruits purple. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 022 (HN, LE01058076 – photo). Det. Yang Yi 18 09 2019

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Ericaceae Vaccinium pseudobullatum W.P. Fang & Z.H. Pan* Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic climbing or creeping shrub to 5 m long with stem to 10 cm in diam. on very steep rather open slope. Flowers purple, young leaves bright glossy reddish-pink. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 021 (HN, LE01054025, LE01054026).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Polypodiaceae s.l. Leptochilus ellipticus (Thunb.) Noot. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Lung Vay village, around point 23º05ʹ46.7ʺN 105º02ʹ53.1ʺE, 1100-1280 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Creeping lithophytic or epiphytic fern in shady place. Occasional. 15 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 169 (HN, LE01058129 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Polypodiaceae s.l. Dryopteridaceae Polystichum dielsii Christ Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Lung Vay village, around point 23º05ʹ46.7ʺN 105º02ʹ53.1ʺE, 1100-1280 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Creeping lithophytic or epiphytic fern in shady place. Occasional. 15 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 170 (HN, LE01058130 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Urticaceae Pilea dolichocarpa C.J. Chen Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Erect lithophytic and terrestrial herb on shady rocks. Flowers pale greenish. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 066 (HN, LE01058097 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Urticaceae Elatostema ramosum W.T. Wang Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Lithophytic pendulous herb on shady vertical cliff. Flowers white to light greenish. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 065 (HN, LE01054041).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Urticaceae Elatostema xanthophyllum W.T. Wang Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Erect terrestrial and lithophytic herb with succulent stem to 1.5 tall on shady rocky slope. Leaved dark glossy greed above. Flowers white to light greenish. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 063 (HN, LE01058095 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Pittosporaceae Pittosporum napaulense (DC.) Rehder & E.H. Wilson Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Treelet. Young fruits dull green. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 062 (HN, LE01058094 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Asteraceae Gynura procumbens Merr. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic creeping and ascending herb to 1.5 m tall on exposed mossy rocks and open cliffs. Flowers bright orange. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 060 (HN, LE01058093 – photo). Det. A. Sennikov 12 09 2019

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Myrsinaceae Embelia carnosisperma C.Y. Wu & C. Chen Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Treelet 3-4 m tall on rocky mountain top. Flower buds white. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 059 (HN, LE01058092 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Asclepiadaceae Hoya vangviengiensis Rodda & Simonsson Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Herbaceous vine 2-3 m long on exposed rocks. Flowers buds white with pink. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 058 (HN, LE01058091). Det.: M. Rodda 11 10 2019

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Primulaceae Lysimachia insignis Hemsl. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic herb on shady rocky slope. Flowers yellow. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 057 (HN, LE01058090 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Araceae Arisaema victoriae V.D. Nguyen Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic tuberiferous herb in shady rocky place. Petiole and peduncle olive green-white tessellated, spathe light green with white base and center. No female flowers, male light yellowish, inflorescence axis light green. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 049 (HN, LE01058089).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Gesneriaceae Lysionotus oblongifolius W.T. Wang Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic herb to 1 m tall among shady rocks. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 044 (HN, LE01058087).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Araceae Arisaema victoriae V.D. Nguyen Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic tuberiferous herb in shady rocky place. Petiole and peduncle olive green-white tessellated, spathe light green with white base and center. Female flowers green. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 043 (HN, LE01058086).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Podocarpaceae Podocarpus annamiensis N.E. Gray Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet 2-3 m tall near mountain top. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 041 (HN, LE01058084 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Pinaceae Pinus wangii Hu & W.C. Cheng Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Tree to 20 m tall. Very rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 040 (HN, LE01058083 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Araceae Arisaema victoriae V.D. Nguyen Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic tuberiferous herb in shady rocky place. Petiole and peduncle olive green-white tessellated, spathe light green with white base and center. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 036 (HN, LE01058081).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Apiaceae Xyloselinum vietnamense Pimenov & Kljuykov Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic undershrub to 0.5 m tall on exposed mossy rocks on mountain tops. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 033 (HN, LE01058080).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Asteraceae Synotis cappa (Buch.-Ham. ex D.Don) C.Jeffrey & Y.L.Chen Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Herbaceous vine on exposed mossy rocks. Flowers yellow. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 026 (HN, LE010580790). Det. A. Sennikov 12 09 2019 Senecio sp.? Det.: I. Illarionova 17.10.2019

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Vitaceae Tetrastigma erubescens Planch. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Dau Cau 1 village, around point 23º05ʹ26.3ʺN 105º01ʹ03.0ʺE, 1100-1150 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Woody vine to 10 m long in open place. Leaves dull purple below. Fruits bright red. Not common. 14 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 124 (HN, LE01058110).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Zingiberaceae Kaempferia rotunda L. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Dau Cau 1 village, around point 23º05ʹ26.3ʺN 105º01ʹ03.0ʺE, 1100-1150 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Terrestrial tuberiferous herb in rather open place. Flowers light violet. Occasional. 14 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 093 (HN, LE01058109).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Araceae Amorphophallus tonkinensis Engl. & Gehrm. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Dau Cau 1 village, around point 23º05ʹ26.3ʺN 105º01ʹ03.0ʺE, 1100-1150 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Terrestrial and lithophytic herb among shady rocks. Scape dull brownish with white spots, spathe olive-greenish, white spotted, female flowers green, male flowers and inflated apex white. Not common. 14 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 092 (HN, LE01058108).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Araceae Arisaema lidaense J. Murata & S.K. Wu Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic tuberiferous herb in shady place. Petiole and scape light uniform green. Spathe light green with white center. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 075 (HN, LE01058105).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Polypodiaceae s.l. Asplenium prolongatum Hook. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Lithophyte of mossy vertical cliff, also occasionally epiphyte. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 072 (HN, LE01085103 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Euphorbiaceae Sauropus sp. 1 Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Treelet to 4 m tall in shady place. Flowers dull reddish. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 071 (HN, LE01058102 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Annonaceae Miliusa sinensis Finet & Gagnep. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Treelet to 4 m tall in shady place. Flowers dull dirty reddish-brown. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 070 (HN, LE01058101).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Gesneriaceae Lysionotus papuciflorus Maxim. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Creeping lithophyte and occasionally epiphyte to 1 m long in open place, Leaves dark dirty violet below. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 069 (HN, LE01058100).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Myrsinaceae Myrsine seguinii H. Lév. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Treelet or shrub to 3 m tall on rocky mountain top. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 068 (HN, LE01058099 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Myrsinaceae Ardisia phankelociana C.M. Hu & G. Hao Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Treelet or shrub to 3 m tall. Fruits bright red. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 067 (HN, LE01058098 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Erythroxylaceae Erythroxylum sinense Wu Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Lung Vay village, around point 23º05ʹ46.7ʺN 105º02ʹ53.1ʺE, 1100-1280 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Shrub or treelet. 15 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 167 (HN, LE01058127).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Ericaceae Rhododendron yunnanense Franch. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Lithophytic shrub to 2 m tall on mossy rocky mountain top. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 346 (HN, LE01058184).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Convallariaceae Tupistra fungilliformis F.T. Wang & S. Yun Liang Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Lithophytic herb on mossy rocky mountain top. Fruits greenish with dirty purple spots. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 345 (HN, LE01058183).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Ericaceae Rhododendron yunnanense Franch. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Shrub 1-2 m tall on mossy rocky mountain top. Flowers light pink-purple. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 341 (HN, LE01058179).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Cyperaceae Carex tsaiana P.C. Li Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Lithophytic sedge on mossy rocks on mountain top. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 338 (HN, LE01058176).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Ericaceae Vaccinium papillatum P.F. Stevens Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Lithophytic (and occasionally epiphytic) shrub to 2 m tall on mossy rocky mountain top. Flowers pink. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 347 (HN, LE01058185 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Podocarpaceae Podocarpus neriifolius D. Don Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Treelet 3-4 m tall on mossy rocky mountain top. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 344 (HN, LE01058182 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Polypodiaceae s.l. Davallia griffithiana Hook. Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Creeping epiphyte and lithophyte on mossy mountain top. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 340 (HN, LE01058178 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Viburnaceae Viburnum cylindricum Buch.-Ham. ex D.Don Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Treelet or shrub 3-5 m tall on mossy rocks on mountain top. Fruits glossy green. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 335 (HN, LE01058173).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Aracreae Arisaema victoriae V.D. Nguyen Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Terrestrial and lithophytic herb on mossy rocky mountain top. Spathe light yellow, scape and petiole white, purple-brown marked. Not common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 348 (HN, LE01058186).

All photos © L. Averyanov & K.S. Nguyen

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Pinaceae Pseudotsuga sinensis Dode Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Sapling 2-3 m tall on mossy vertical cliff on mountain top. All mature trees logged. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 339 (HN, LE01058177 – photo).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Ericaceae Rhododendron sp. 1 Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic shrub on mountain top. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 018 (HN, LE01058075).

All photos © L. Averyanov & K.S. Nguyen

FLORA OF VIETNAM Ericaceae Vaccinium tonkinense Dop Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Small creeping undershrub on mossy rocky mountain top. Flowers white. Common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 342 (HN, LE01058180 – photo).

All photos © L. Averyanov & K.S. Nguyen