Gesneriaceae

Chirita sp.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thung Pang village, around point 23º04ʹ28.9ʺN 104º55ʹ32.0ʺE, steep rocky slope to large deep cave composed with highly eroded marble-like white limestone at elevation 900–1000 m a.s.l. Secondary evergreen broad-leaved very humid forest with bamboo. Lithophytic rosulate herb on exposed cave rocks. Flowers blue with darker streaks. Locally abundant, but only inside and around the cave. 17 October 2018, L. Averyanov, Nguyen Sinh Khang, T. Maisak, Truong Duc Thieu, VR 938.