234 
Card. Bull. Singapore 69(2) 2017 
Habitat. On limestone in deciduous forest. 
ProvisionalIUCNconservation assessment. Endangered EN B1 ab(iii,iv) + B2ab(iii,iv). 
The known EOO of this species would qualify it for Critically Endangered but the 
collecting localities are in a limestone range much of which has so far not been 
explored and where it is also likely to occur. Even if it were to occur throughout this 
range its EOO would still qualify it as Endangered. Parts of this range, including some 
of the known localities, are outside protected areas and subject to disturbance from 
visitors, particularly at the religious sites. 
Additional specimens examined. THAILAND: Tak: Mae Sot, Tham Inthanin Temple, 640 m, 
17 Oct 2013, Pooma, R. et al. 7851 (BKF, E); ibidem, 650 m, 5 Nov 2010, Pooma, R. et al. 
7522 (BKF); ibidem, 500 m, 11 Sep 2009, Middleton, D.J. & Triboun, P. 4849 (BK, E); Maesot, 
Phra Wo, Phra Wo Spirit House, 700 m, 5 Nov 2010, Pooma, R. et al. 7507 (BKF); Mae Sot, 
Mae Kah Soh, Po Tip Tawng Cave, 300 m, 20 Aug 1994, Maxwell, J.F. 94-905 (A, BKF, L). 
Notes. This species is recognisable by the pale lilac corolla with a yellow ventral line, 
the broad mouth, and the dense anther indumentum. It is currently known only from 
the Mae Sot district of Tak province. 
9. Microchirita huppatatensis C.Puglisi, Kew Bull. 71(l)-2: 2 (2016). - TYPE: 
Thailand, Uthai Thani, Lan Sak, Huppatat Non Hunting Area, 122 m, 14 October 
2014, Middleton, D.J., Hemrat, C., Karaket, P, Puglisi, C., Suddee, S. 5689 (holotype 
BKF). (Fig. 5C-D) 
Herb to 40 cm tall. Stems fleshy, red at base and around the basal nodes, otherwise pale 
green, pubescent. Leaves opposite, with the exception of the single basal leaf; petioles 
0.5-1.2 cm long, pubescent; blades pale green above, paler beneath, lanceolate or 
elliptic, 5-12.8 x 1.6-6.1 cm (undamaged basal leaf not seen), 2-3 times as long as 
wide, base acute to obtuse, apex acuminate, minutely tomentose above and beneath, 
margin entire, 5-9 pairs of secondary veins in the opposite leaves, at least 13 in the 
basal leaf, venation raised beneath in fresh material, tertiary venation barely visible 
and loosely reticulate. Inflorescence cristate, 4-15-flowered; peduncles reduced, 
rarely emerging and fused together at the base; bracts absent; pedicels pale green, 
0.2-2 cm long, pubescent. Calyx pale green, actinomorphic, tube 0.3-0.5 mm long, 
lobes narrowly lanceolate, 8-9 x 0.7-1.1 mm, apex acute, outside hairy throughout, 
with mixed glandular and eglandular hairs, inside with a sparse minute glandular 
indumentum. Corolla 15-20 mm long, base of tube greenish white, rest of tube white, 
ventral pouch of tube marked by a yellow, raised and papillose line running throughout 
the inner surface of the tube, with a purple-brown streak on either side of it, tube with 
a narrow basal portion, curved downwards, then abruptly broadening into a ventral 
pouch, upper lobes reflexed, lower lateral lobes spreading, the central lobe straight, 
limb externally sparsely hairy, with stalked glands at the base; tube 9-10 mm long 
