FLORA OF VIETNAM
Rubiaceae Sp.
Northern Vietnam, Ha Giang Prov., Yen Minh Distr., Du Gia municipality, Giang Chu D village (Du Gia Nature Reserve).
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, around point 22°55?57? N, 105° 08?32?E, 1852 m a.s.l.
Herb 50 cm tall, common in the top mountain. Petals violet
CPC 304 15 May 2010.
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Collectors: N. Q.Hieu, N.T. Hiep, N. T. Vinh, H.V.Chung (Funded by Critical Ecosystem Partnership Fund-CEPF through FFI)