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Fam. Orchidaceae

Tropidia angulosa (Lindl.) Blume

N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Yen Lac, vicinities of Yen Lac village (N 22ø44' E 105ø50'), about 44 km to NWW from Cao Bang town. Primary evegreen closed broadleaved forest on

steep mt slopes of limestone ridge at 1200 m alt. Herb up to 0.5 m hg on steep shadow slope. Not rare.

No CBL 307 15 Nov. 1998

International Botanical Expedition of the U.S.A. National Geographic

Society (grant No 6300-98)

Collectors: Averyanov L., N.T.Hiep, P.K.Loc, N.X.Tam.

11 Expedition of Scientific Vessel "Academician A. Nesmeyanov"

Orchidaceae

Tropidia curculidoides Lindl.

VIETNAM, Prov. Vungtau – Condao, Con Dao Island, N 8°04' E 106°35'. 1987. 04. 06.

Leg. Averyanov L., Kudryavtzeva E., Nguyen Tien Ban. Averyanov 880.

Det. Averyanov L. at 06.04.1987.

Fam. Orchidaceae

Tropidia curculigoides Lindl.

N. Vietnam, prov. Cao Bang, distr. Tra Linh, municipality Quoc Toan,

vicinities of Lung Tao village (N 22ш45' E 106ш19'), about 12 km from

Cao Bang town to the NNE. Primary semideciduous open broadleaved

forest on steep slopes and bluffs of remnant limestone ridge at

600-800 m alt. Terrestrial herb up to 0.6 m hg on steep shadow slopes.

Not common.

No CBL 1251 14 Dec. 1998

International Botanical Expedition of the U.S.A. National Geographic

Society (grant No 6300-98)

_____________________________________________________________________

Collectors: N.T.Hiep, N.Q.Binh, P.K.Loc, N.X.Tam, Averyanov L.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Hong Municipality, around point 18°34′06′'N, 105°11′40′'E. Heavily logged primary broad-leaved evergreen dry forest on steep mt slopes and along ridge composed with shale at elev 300-400 m a.s.l. Terrestrial herb. Flowers white, lip yellow. Not common.
HAL 5261 9 May 2004 (Photo, silica fix.)
Collectors: P.K.Loc, L.Averyanov, P.V.The, N.T.Vinh.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

N. Vietnam, Prov. Quang Binh, distr. Minh Hoa, 72 km to NWW
from Dong Hoi, municipalite Thong Hoa, vicinities of Yen Son village, limestone massif Ke Bang (N 17°40′ E 105°57′). Primary evergreen broadleaved forest on steep slopes and bluffs of limestone mesas
at 200-250 m alt. Terrestrial herb up to 15-20 cm hg in deep shadow place. Not common.
VH 4606 15.05.1997
International Botanical Expedition of the U.S.A. National Geographic
Society (grant No 5803-96)

Collectors: L. Averyanov, N.T. Hiep, P.K. Loc

FLORA OF VIETNAM
Plants of Chu Yang Sin National Park
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vietnam, Dak Lak Prov., Krong Bong Distr., Hoa Son Municipality, E slopes of Chu Yang Sin mt system at elevation 600-850 m a.s.l. around point 12°30′27″N 108°22′50″E. Secondary broad-leaved evergreen forest with bamboo on steep rocky mountain slopes. Terrestrial herb up to 0.4 m tall. Not common.
HLF 5482 30 October 2005.
Coll. L.Averyanov, T.V.Thao, N.T.Vinh.
Grant from Henry Luce Foundation.

FLORA OF LAOS
Orchidaceae
Tropidia curcugiloides Lindl.

Xiangkhouang Prov., Kham Distr., Huad village, Phou tat Vinh mt., around point 19°32′31.6′N 103°39′40.4′E.
Primary and secondary broad-leaved evergreen and semideciduous dry forest on very steep rocky slopes of limestone highly eroded mountains composed by solid marble like limestone at elev. 1200-1400 m a.s.l.
Terrestrial herb on shady slope. Not Common.
LA-VN 1070 4 April 2015
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.

FLORA VIETNAMICA
Soviet – Vietnamese Expedition
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vietnam. Prov. Hai Phong, Cat Hai, Cat Ba. 21.12.1986. L. Averyanov et al. LX-VN 3335
Det.: L. Averyanov 1987

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa

N.Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi Municipality, Cho Dien village, Then Su mt., 22°14′28′'N 105°29′50′'E. Secondary open evergreen broadleaved forest with bamboo on very steep slopes and cliffs of remnant mountains composed with highly eroded crystalline limestone near top of ridge at elev. 200-250 m
a.s.l. Terrestrial herb in shady places. Occasional.
HLF 879 26 Dec. 2002.
Coll. Phan Ke Loc, L.Averyanov, Nguyen Anh Duc, To Van Thao, Mai Van Xinh, Nguyen Tien Vinh.
Grant from Henry Luce Foundation.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

N.Vietnam, Bac Kan Prov., Ba Be Distr., Nam Mau Municipality, Ba Be National Park around point 22o23′22′'N 105o37′09′'E. Selectly logged primary evergreen dry broad-leaved forest on very stee slopes and cliffs composed with crystalline highly eroded marble-like limestone at elevation 300-400 m a.s.l.
Terrestrial herb in shady place. Occasional.
HLF 604 23 Dec. 2002.
Coll. J.Regalado, Nguyen Tien Hiep, L.Averyanov, Do Hoang Chung,To Van Thao, Vu Hong Van, Nguyen Tien Vinh, Mai Van Xinh.
Grant from Henry Luce Foundation.

FLORA VIETNAMICA
Soviet – Vietnamese Expedition
Orchidaceae
Tropidia angulosa (Lindl.) Blume⁣

Vietnam. Prov. Hai Phong, Cat Hai, Cat Ba. 28.12.1986. L. Averyanov et al. LX-VN 3447
Det.: L. Averyanov 1987

Orchidaceae

Tropidia angulosa

Vietnam, prov. Vungtau - Condao, Con Dao N 8°40' E 106°35'. In shady mountain fotest at elev. 300 m. 1987.04.06. Averyanov L., Kudryavtzeva E, Averyanov 881.

Det.: Averyanov L. at 06.04.1987

FLORA OF VIETNAM
Plants of Lo Go Xa Mat NP
Orchidaceae
Tropidia curculigoides Lindl.

Vietnam, Tay Ninh Prov., Tan Bien Distr., Tan Binh Municipality, Ta Not FP Station, around point 11°37′43”N 105°52′26”E. Slightly logged primary closed evergreen broad-leaved lowland forest with the dominance of species of Dipterocarpaceae (Dipterocarpus dyeri, D. costatus, D. alatus, D. obtusifolius, Shorea sp.) mixed with Lagerstroemia calyculata, Irvingia malayana, Anogeissus acuminata, Sindora siamensis, Pterospermum sp., on thin soils at elevation about 13 m a.s.l. Terrestrial herb to 1 m tall in shady place. Locally common.
HLF 7679 26 December 2008
Coll. T.H.Thai, Averyanov L., P.K.Loc, P.V.The, Averyanova A., N.T.Vinh.
Grant from Henry Luce Foundation.

Orchidaceae

Tropidia curculigoides Lindl.

Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41’14.3”N 105°53’28.9”E.

Primary evergreen broad-leaved mossy forest on tops and along ridge edge composed with solid crystalline limestone at elevation 700-750 m a.s.l. Terrestrial herb in shady depression between ridge tops. Flowers white. Common.

CPC 4056 6 August 2011

Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Vinh, N.V.Tap, P.V.The, L.T.Kien.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Dinh Phung, Man Lung ridge (N 22°47′ E 105°49′). Primary very wet cloud evergreen closed mixed forest (with Podocarpus and Fokienia) along tops of remnant karst limestone Man Lung ridge at 1550-1600 m elev. Terrestrial and lithophyte herb up to 0.5 m hg. Not common.
CBL 1547 18 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)
Collectors: P.K.Loc, P.H.Hoang, Averyanov L.

FLORA VIETNAMICA
Soviet – Vietnamese Expedition
Orchidaceae
Tropidia angulosa (Lindl.) Blume⁣

Vietnam. Prov. Hai Phong, Cat Hai, Cat Ba, Trung-Trang-Ao Ech. 02.01.1988. L. Averyanov et al. LX-VN 3660
Det.: L. Averyanov 1988

FLORA OF LAOS
Orchidaceae
Tropidia curcugiloides Lindl.

Vientiane prov., Kasi distr., between San and Tham Tai villages, around point 19°17′47.9′'N 102°08′58.9′'E.
Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 900-1000 m a.s.l. Terrestrial herb on shady rocky slope. Not common.
LA-VN 1646 25 March 2017
Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.

FLORA OF LAOS
Orchidaceae
Tropidia curculigoides Lindl.

Houphan Prov., Xon Distr., Nong Hua Pa Noi village, around point 20°13′02.1′'N 103°24′23.3′'E.
Primary and secondary broad-leaved evergreen forest on very steep rocky mountain slopes composed by shaly limestone at elev. 1100-1200 m a.s.l. Terrestrial herb to 0.5 m tall on shady rocky steep slope. Occasional.
LA-VN 1276 11 April 2015
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.

Orchidaceae

Tropidia angulosa (Lindl.) Blume

VIETNAM. Prov. Vungtau-Condao, Con Dao. N 8 ° 40' E106 35' In shady submontane forest. 1989.06.17

Leg. Averyanov L., Kudreavtzeva E. Averyanov 512.

Det. Averyanov L. at 17.06.1989.

FLORA VIETNAMICA
Soviet – Vietnamese Expedition
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vietnam. Prov. Hai Phong, Cat Hai, Cat Ba. 18.12.1986. L. Averyanov et al. LX-VN 3266
Det.: L. Averyanov 1987

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Phu Tho Prov., Tan Son Distr., Xuan Son Municipality, Du village, around point 21°02′55”N 104°56′51”E.
Primary broad-leaved forest on very steep rocky slopes and cliffs of Svoi Lap remnant mountain composed with highly eroded solid marble-like limestone at elevation 600-700 m a.s.l. Terrestrial herb on shady rocky slope. Common.
HAL 12715 17 February 2009
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, L.T.Son.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vietnam, Nghe An Prov., Tuong Duong Distr., Tam Quang Municipality, Tung Huong village, along Khe Mat stream around point 19°03′07″N 104°36′57″E at elevation about 400-500 m a.s.l. Lowland closed secondary old evergreen forest on steep slopes along rocky stream valley composed with stratified solid shale and sandstone.
Terrestrial herb up to 0.4 m tall along rocky shady stream valley. Not common.
HLF 6625 17 March 2007.
Coll. Averyanov L., P.K.Loc, N.V.Trai, N.T.Vinh, N.D.Phuong, Averyanova A.
Grant from Henry Luce Foundation.

FLORA VIETNAMICA
Soviet – Vietnamese Expedition
Orchidaceae
Trichotosia velutina Kraenzl.⁣

Vietnam. Prov. Gia Lai - Kon Tum, Kon plong, Mang canh. 27.05.1985, L. Averyanov et al. LX-VN 2257

Garden Number 225
Det.: L. Averyanov 27.05.1985

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Quang Binh Prov., Minh Hoa Distr., Hoa Tien municipality, La Van village, around point 17°51′45”N 105°49′45”E.
Highly degraded primary and secondary evergreen broadleaved forest on very steep rocky slopes of remnant limestone hills composed with highly eroded marble-like crystalline limestone at elev. 200-450 m a.s.l.
Terrestrial herb on shady steep rocky slope. Not rare.
CPC 2543 30 April 2011
Coll.: L.Averyanov, P.K.Loc, N.Q.Hieu, P.V.The, N.T.Vinh.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Lai Chau Prov., Sin Ho Distr., Ma Quai Municipality, Can Ti 2 village, around point 22°24′18″N 103°22′45″E.
Remnants of broad-leaved evergreen closed primary and secondary forest on steep mountain slopes composed with sandstone and limestone at elev. about 1200 m a.s.l. Terrestrial herb on shady steep slope. Occasional.
HAL 9837 16 Nov. 2006
Coll.: Nguyen Tien Hiep, L.Averyanov, Pham Van The.

Fam. Orchidaceae

Trichotosia velutina (Lodd. Ex Lindl.) Kraenzl.

N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Eo Dieu village, around point 20º26'06''N, 105º13'51''E. Primary evergreen seasonal broad-leaved closed submontane forest on top of rocky ridge composed with crystalline marble-like highly eroded limestone at elev. 900-1000 m. Epiphyte. Flowers white. Very common.

No HAL 3503 25 Sept. 2003 (Photo)

FFI Pu Luong - Cuc Phuong Conservation Project

Collectors: L.Averyanov, D.T.Doan, J.Regalado, N.T.Vinh.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vientiane prov., Vang Vieng distr., Oa Hom village, around point 19°06′52.4′'N 102°22′35.8′'E.Secondary broad-leaved evergreen and semideciduous dry forest with on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 550-650 m a.s.l. Terrestrial herb on shady rocky steep slope. Common.
LA-VN 1525 22 March 2017
Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Quang Binh Prov., Minh Hoa Distr., Dan Hoa Municipality, Bai Dinh village around point 17°45′28”N 105°46′14”E.
Remnants of primary evergreen broad-leaved forest along rocky stream canyon composed with highly eroded marble-like solid limestone at elevation about 160-250 m a.s.l. Terrestrial herb in shady places along rocky stream canyon. Locally common.
HAL 12305 6 February 2009
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, L.T.Son.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa Blume

Northern Vietnam, Ha Tinh Prov., Huong Son Distr., Son Kim Municipality, in the vicinity of Rao An village, around point 18°24′30′'N, 105°13′13′'E. Remnants of primary evergreen lowland seasonal broad-leaved forest on very steep granite/shale slopes of rocky river canyon at 180-200 m a.s.l. Terrestrial herb 20-30 cm hg.
Flowers with strong sweet fragrance, white, lip with yellowish-green center. Locally common.
HAL 1223 (Photo) 27 April 2002
Collectors: P.K.Loc, L.Averyanov, N.X.Tam, N.T.Vinh.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vientiane prov., Vang Vieng distr., Oa Hom village, around point 19°05′57.0′'N 102°23′19.9′'E. Secondary broad-leaved evergreen and semideciduous dry forest with on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 650-750 m a.s.l. Terrestrial herb in shady places on shady rocky mountain top. Common.
LA-VN 1537 22 March 2017
Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vientiane prov., Kasi distr., between San and Tham Tai villages, around point 19°17′47.9′'N 102°08′58.9′'E.
Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 900-1000 m a.s.l. Terrestrial herb on shady rocky slope. Not rare.
LA-VN 1647 25 March 2017
Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vietnam, Quang Binh Prov., Quang Ninh Distr., Truong Son municipality, around Long Son village at 17°13′11″N 106°26′58″E. Secondary dry broad-leaved forest on the top and on slopes of highly eroded karst limestone Cop Cuong mountain composed with gray solid marble limestone allied to Long Dai River at elevation 300-400 m a.s.l. Terrestrial herb on steep rocky shady slope. Common.
HAL 11497 12 April 2008
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, N.S.Khang

FLORA OF VIETNAM
Plants of Ngoc Son-Ngo Luong Nature Reserve
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Hoa Binh Prov., Lac Son Distr., Ngoc Son Municipality, Khu village, around point 20?27′42″ N, 105?18′34″ E, 611 m a.s.l. In logged primary closed evergreen broad-leaved lowland forests on foot and slopes of limestone mountains. Rare. Terrestrial. Flowers white. HAL 9033 28 Jul 2006 Photos

Collectors: Phan Ke Loc, Nguyen Sinh Khang & Nguyen Tien Vinh
Collected with the financial support from NYBG, U.S.A.

FLORA OF VIETNAM
Orchidaceae
Trichotosia velutina (Lindl.) Kraenzl. ?

S.Vietnam, Thua Thien Hue Prov., Xuan Loc Distr., Bach Ma National Park, along Dong Truoi ridge and S slopes around point 16°14′11′'N 107°44′28′'E. Broad-leaved evergreen primary closed forest on very steep granite
slope at elev. 800-900 m a.s.l. Epiphyte on waterfall cliff. Rare. HLF 1734 7 May 2003.
Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al.
Grant from Henry Luce Foundation.

FLORA OF VIETNAM
Orchidaceae
Trichotosia velutina (Lindl.) Kraenzl. ?

S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, N slope of Bach Ma mt system, to the N-NW of point 16°12′11′'N 107°50′23′'E at elev. about 400 m a.s.l. Broad-leaved evergreen wet primary closed forest on very steep sandstone, shale and granite slopes along rocky stream canyon. Epiphytic herb with pendent shoots on old mossy trees along river. Rare. HLF 1484 30 April 2003.
Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al.
Grant from Henry Luce Foundation.

Orchidaceae

Tropidia angulosa (Lindl.) Blume

Vientiane prov., Kasi distr., Si Sang Vone village, around point 19°06'10.9''N 102°10'46.1''E.

Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 600-700 m a.s.l. Terrestrial herb on rocky steep shady slope. Not rare.

LA-VN 1799 28 March 2017

Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Xiangkhouang Prov., Kham Distr., Huad village, Phou tat Vinh mt., around point 19°32′31.6′N 103°39′40.4′E.
Primary and secondary broad-leaved evergreen and semideciduous dry forest on very steep rocky slopes of limestone highly eroded mountains composed by solid marble like limestone at elev. 1200-1400 m a.s.l.
Terrestrial herb on shady rocky slope. Locally common.
LA-VN 1078 4 April 2015
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.

Plants of Nui Chua national park

Fam. Orchidaceae

Trichotosia pulvinata (Lindl.) Kraenzl. ?

S.Vietnam, Ninh Thuan Prov., Ninh Hai Distr., Vinh Hai Municipality, NEE slopes on Nui Chua mountains to SW of point 11o43'52''N 109o08'35''E at elev. about 600-700 m a.s.l. Primary evergreen closed dry forest on rocky mountain slopes composed with granite. Humus epiphyte on high trees. Very common.

HLF 4254 28 March 2004. (Leaves silica.fixed).

Coll. J.Regalado, N.T.Hiep, P.K.Loc, L.Averyanov, N.T.Vinh, P.V.Doan, T.T.An, N.T.Hoi, T.V.Huong, N.V.Su, T.T.T.Trang, H.A.Tuan.

Grant from Henry Luce Foundation.

Plants of Nui Chua national park

Fam. Orchidaceae

Trichotosia pulvinata (Lindl.) Kraenzl. ?

S.Vietnam, Ninh Thuan Prov., Ninh Hai Distr., Vinh Hai Municipality, NEE slopes on Nui Chua mountains to SW of point 11o43'52''N 109o08'35''E at elev. about 600-700 m a.s.l. Primary evergreen closed dry forest on rocky mountain slopes composed with granite. Humus epiphyte on high trees. Very common.

HLF 4254 28 March 2004. (Leaves silica.fixed).

Coll. J.Regalado, N.T.Hiep, P.K.Loc, L.Averyanov, N.T.Vinh, P.V.Doan, T.T.An, N.T.Hoi, T.V.Huong, N.V.Su, T.T.T.Trang, H.A.Tuan.

Grant from Henry Luce Foundation.

Orchidaceae

Tropidia angulosa (Lindl.) Blume

Vientiane prov., Kasi distr., Si Sang Vone village, around point 19°06'10.9''N 102°10'46.1''E.

Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 600-700 m a.s.l. Terrestrial herb on rocky steep shady slope. Not rare.

LA-VN 1799 28 March 2017

Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa (Lindl.) Blume

N.Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi Municipality, village Phia Khao, around point 22°16′58′'N, 105°31′20′'E at elevation 800-900 m a.s.l. (Lung Chang and Lung Li mountains). Primary broad-leaved evergreen closed wet forest on very steep slopes and cliffs of rocky ridges and mesae composed with solid marble-like stratified limestone. Terrestrial herb on shady slope. Very common.
HAL 4680 20 May 2004
Collectors: L.Averyanov, N.T.Hiep, P.V.The, N.T.Vinh.

FLORA OF VIETNAM
Orchidaceae
Trichotosia pulvinata (Lindl.) Kraenzl. ?

Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Hong Van Municipality, Ta Lo village, around point 16°21′52′'N, 107°09′36′'E at elevation about 1000-1100 m a.s.l. Secondary wet closed broad-leaved forest on very steep mountain slopes composed with shale. Epiphyte on mossy tall trees along shady rocky stream canyon. Occasional.
HAL 7684 30 April 2005.
Collectors: L.Averyanov, P.K.Loc, T.V.Thao, N.T.Vinh.

Fam. Orchidaceae

Trichotosia pulvinata (Lindl.) Kraenzl. ?

Vietnam, Thua Thien – Hue Prov., Huong Thuy Distr., Duong Hoa Municipality, Huong Thuy forest enterprise territory, around point 16°13'25''N, 107°34'09''E, rocky quartzite outcrops along Mang Chan ridge at elevation about 825 m a.s.l. Fractionally logged primary closed evergreen broad-leaved forest along ridge tops composed with white eroded quartzite. Epiphyte and lithophyte. Flowers white. Locally abundant.

No HAL 8208 13 May 2005. Photo.

Collectors: L.Averyanov, P.K.Loc, T.V.Thao, N.T.Vinh.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Houphan Prov., Hem Distr., Khon Ngua village, around point 19°55′53.2′'N 103°16′24.2′'E.
Secondary broad-leaved evergreen open dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 700-950 m a.s.l. Terrestrial herb on shady mountain slope. Not common.
LA-VN 1469 15 April 2015
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham, Somchanh Bounphanmy.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Vientiane Prov., Vang Vieng Distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua Mt., around point 18°55′36.4”N 102°20′44.6”E. Dry broad-leaved secondary evergreen forest on very steep rocky slopes and on vertical cliffs of remnant highly eroded rocky limestone mountains composed by solid crystalline limestone at elevation 350-450 m. Terrestrial herb in shady places. Occasional.
LA-VN 501 17 March 2013
Coll.: N.T.Hiep, L.Averyanov, K.Chantthavongsa, N.S.Khang, P.V.The, S.Lorphengsy

FLORA OF VIETNAM
Orchidaceae
Trichotosia pulvinata (Lindl.) Kraenzl. ?

Vietnam, Thua Thien – Hue Prov., Nam Dong Distr., Huong Son Municipality, around point 16°09′52′'N, 107°36′22′'E (around plot 16°10′05′'N, 107°36′02′'E). Heavily logged primary closed broad-leaved evergreen lowland forest along La Ma River on very steep hill slopes composed with clayey shale at elevation about 300-450 m a.s.l. Epiphyte on tall trees. Occasional.
HAL 6879 25 March 2005.
Collectors: L.Averyanov, N.T.Hiep, P.K.Loc, P.V.The, A.Averyanova, N.T.Vinh.

Fam. Orchidaceae

Trichotosia pulvinata (Lindl.) Kraenzl. ?

Vietnam, Thua Thien – Hue Prov., Huong Thuy Distr., Duong Hoa Municipality, Huong Thuy forest enterprise territory, around point 16°13'25''N, 107°34'09''E, rocky quartzite outcrops along Mang Chan ridge at elevation about 825 m a.s.l. Fractionally logged primary closed evergreen broad-leaved forest along ridge tops composed with white eroded quartzite. Epiphyte and lithophyte. Flowers white. Locally abundant.

No HAL 8208 13 May 2005. Photo.

Collectors: L.Averyanov, P.K.Loc, T.V.Thao, N.T.Vinh.

FLORA OF LAOS
Orchidaceae
Tropidia angulosa (Lindl.) Blume

Houphan Prov., Hem Distr., Nacoc village, Puphadeng mountain, around point 20°09′52.6′'N 103°10′19.4′'E.
Primary and secondary broad-leaved evergreen open dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 1000-1200 m a.s.l. Terrestrial herb on shady steep slope. Not common.
LA-VN 1411 12 April 2015
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.