Two new species of Oreocharis in Vietnam 
303 
Table 2. Characteristics distinguishing Oreocharis blepharophylla, O. magnidens and O. 
curvituba. 
Characters 
O. blepharophylla 
O. magnidens 
O. curvituba 
Petiole 
Densely spreading 
villous 
Densely appressed 
silvery pubescent 
Sparsely spreading 
hirsute 
Leaf lateral veins 
Adaxially with 
tuberculate setae, lateral 
veins 5-6 on each side 
Adaxially with 
tuberculate setae, lateral 
veins 8-9 on each side 
Adaxially with strongly 
bullate setae, lateral 
veins 4-7 on each side 
Peduncle 
5-3 cm, spreading 
villous 
7-20 cm, densely 
glandular pubescent 
3-15 cm, brown 
pubescent, glandular 
puberulent apically 
Bracts 
Linear, 2.4-3 x 0.4-0.5 
mm, and abaxially 
villous 
Ovate, 5-6 x 1.5-3.5 
mm, abaxially brown 
sericeous lanate 
Lanceolate-linear, c. 
3 mm long, glandular 
villous outside 
Calyx 
Lobes linear, 6-7 x 
1-1.2 mm 
Lobes ovate, 2.5-3 x 
1-1.5 mm 
Lobes ovate-triangular, 
2-2.2 x 0.7-1 mm 
Corolla 
2-2.4 cm long 
0.75-1.2 cm long 
1.1-1.3 cm long 
Corolla tube 
Not constricted at throat, 
straight, purple 
Narrowed at throat, 
inflated at base, straight, 
white 
Not constricted at throat, 
slightly curved, purple 
Corolla limb 
Limb slightly 2-lipped, 
lobes white with purple 
stripes 
Limb distinctly 2-lipped, 
lobes white with purple 
tips 
Limb distinctly 2-lipped, 
lobes white or purplish 
without tips 
Adaxial lip 
Lobes obovate or 
oblong, 6-8 x 4-5 mm 
Lobes narrowly oblong to 
lanceolate, 5-6 x 1.5-2 
mm 
Upper lips narrowly 
oblong, ca. 3.8-4 x 
1.2-1.4 mm 
Abaxial lip 
Lobes obovate or 
oblong, 9-12 x 5-7 mm, 
apex rounded or obtuse 
Lobes narrowly oblong to 
lanceolate, 5-9 x 1-1.5 
mm, apex acuminate 
Lower lips narrowly 
oblong, 4.2-4.8 x 
1.3-1.5 mm, apex 
slightly retuse 
Anthers 
Coherent in 2 pairs 
Not coherent 
Not coherent 
Provisional IUCN conservation status. Endangered EN Blab(ii,iii,v) + B2ab(ii,iii,v), 
following IUCN (2012, 2016) guidelines. This is based on an EOO of < 5000 km 2 
and an AOO of < 500 km 2 , being known from fewer than five populations, and with 
evidence of a reduction in the area of occupancy, a decline in habitat quality, and a 
decline in the number of individuals due to deforestation, largely for agriculture and 
due to fire. 
Additional specimens examined. VIETNAM. Son La: Moc Chau Distr., Chieng Son comm., Pha 
Luong village, PhaLuong Mountain summit, 1750-1850 m a.s.l. 20°40'23.0"N 104°37'52.0"E, 
23 Sep 2016, Averyanov, L. et al. CPC 8000 (CPC, LE); Van Ho Distr., Tan Xuan comm., A 
Lay village, 20°40'46.2"N 104°39'49.6"E, 1500 m a.s.l., 1 Oct 2016, Averyanov, L. et al. CPC 
8171 (CPC, LE). 
