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Card. Bull. Singapore 69(2) 2017 
region are threatened by mining and tourism an updated assessment of Near Threatened 
is appropriate. 
Additional specimens examined. THAILAND: Chiang Mai: Mae Taeng, Sop Berng, Mawk Fa 
Falls, 650 m, 18 Aug 1990, Maxwell, J.F. 90-887 (A, CMU, L). Chiang Rai: Mae Fa Luang, 
along main road, 500 m N of Phratamnak, Doi Tung Development Project offices, 23 Sep 2010, 
van de Bult, M. 1076 (BKF); Mae Sai, Wat Tham Pha Jom, 500 m, 24 Sep 2008, Middleton, 
D.J. et al. 4577 (BKF, E, P, QBG, SING); Mae Sai, Pong Ngam, Ban Tham, Tham Pla, 400 
m, 28 Oct 2005, Maxwell, J.F. 05-607 (A, BKF, CMUB); Mae Sai, Pong Ngam, San Pa Sak, 
Wat Tham Boom, 525 m, 7 Sep 2006, Maxwell, J.F. 06-646 (A, CMUB, QBG); Mae Sai, Pong 
Ngam, Wat Tham Phum, 410 m, 2 Nov 2010, Norsaengsri, M. & Tathana, N. 7228 (BKF, 
QBG); Mae Sai, Tahm Ban Santisuk, 550 m, 23 Sep 1989, Maxwell, J.F. 89-1120 (A, CMU, E). 
Notes. This northern Thai species is recognisable by the white corolla and the glabrous 
anthers. It is most easily confused with Microchirita hamosa, from which it differs 
in the longer and more markedly broadened upper portion of the corolla (shorter and 
tubular in M. hamosa ), and in the much longer and narrower capsule, which is also 
very sparsely hairy (densely hairy in M. hamosa ). It differs from Microchirita suddeei 
D.J.Middleton & Triboun in the glabrous anthers and in being pure white (not pale 
lilac). The floral measurements reported were largely extracted from Middleton & 
Triboun (2013) as not much new material was available for dissection. 
2. Microchirita albocyanea C.Puglisi, sp. nov. 
Most similar to Microchirita limbata C.Puglisi in the overall shape of the corolla and 
in colour, but differs in not having a glandular indumentum and in the much longer 
corolla and larger calyx. - TYPE: Thailand, Loei, Pha Khao, Wat Phu Phang, 447 m, 
5 November 2014, Tetsana, N. et al. 876 (holotype BKF; isotype SING). (Fig. 2D-F) 
Caulescent herb to 30 cm tall, internodes 3-5 cm. Stem succulent, sparsely eglandular 
hairy; not branching. Leaves opposite, apart from the basal leaf; petioles 0.1-1 cm 
long, sparsely eglandular hairy; blades mid green above, paler beneath, ovate to 
elliptic, 3.5-14.2 x 1.5-8 cm, 1.5-3 times as long as wide, base shortly attenuate 
to obtuse, apex acute to acuminate, eglandular pubescent above and beneath, margin 
finely serrulate, 4-13 pairs of secondary veins, venation sunken above and raised 
beneath in fresh material, flat in dry specimens, tertiary venation seldom visible in 
dry specimens. Inflorescences cristate, 2-15-flowered; peduncles reduced and shortly 
fused with each other, eglandular pubescent; bracts absent; pedicels pale green, 1-18 
mm long, eglandular pubescent. Calyx greenish white, succulent at the base, tube c. 
0.5 mm long, lobes narrowly lanceolate, c. 10-14 x 1.6-2.5 mm, apex acuminate and 
thickened, margin entire, with eglandular hairs outside especially along the midrib and 
the margin, glabrous inside. Corolla 21-25 mm long, tube white, throat white with a 
yellow patch at the base of the filaments, lobes purple-blue, tube narrow at the base, 
then becoming wider, not curved or only slightly so, lobes almost equal, glabrous at the 
base, then becoming progressively hairier, eglandular hairy outside, glabrous inside; 
