280 
Card. Bull. Singapore 69(2) 2017 
Suddee, S. et al. 4807 (BKF); Thap Put, Kee Ree Wong Temple, 24 Oct 2004, Saway & Rob. 
11138 (QBG). 
Notes. Microchirita viola is represented by rather few specimens in Thailand. A more 
comprehensive description of this species is provided by Rafidah (2017). 
29. Microchirita woodii D.J.Middleton & Triboun, Thai Forest Bull., Bot. 41: 15 
(2013). - TYPE: Thailand, Nan, Muang Nan, Tham Pha Tup Forest Park, trail to Phra 
Cave, 300 m alt., 16 August 2012, Middleton, D.J., Karaket, P., Suddee, S. & Triboun, 
P. 5612 (holotype BKF; isotypes BK, E [00629450], P [P00966763]). (Fig. 18C-F) 
Caulescent herb to 50 cm tall with elongated stem runners, internodes 2-15 cm. Stems 
succulent, green, glabrescent or with a sparse eglandular indumentum. Leaves opposite, 
apart from the basal leaf; petioles 0.3-1 cm long, green, sparsely eglandular hairy; 
blades pale green above and beneath, ovate to elliptic, 2.7-30 x 1.8-21.5 cm, 1.2-2.2 
times as long as wide, base cordate, apex acute, sparsely eglandular hairy above and 
beneath, ciliate along the margin, margin entire with sparse obscure teeth, 8-15 pairs 
of secondary veins, venation sunken above and raised beneath in fresh material, flat 
in dry specimens, tertiary venation laxly reticulate. Inflorescences cristate, peduncles 
reduced or emerging to 5 mm long but not fused together, bracts absent; pedicels 
pale green, 7-20 mm long, pubescent. Calyx green, actinomorphic, lobes completely 
divided, narrowly ovate, 5.7-10.5 x 0.9-1 mm, apex acuminate and slightly thickened, 
margin entire, glabrescent or sparsely hairy, hairier at tip, glabrous inside. Corolla 
18-22 mm long, tube very pale green, lobes yellow-white, throat yellow with a darker 
yellow ventral patch and dark brown spots to its sides, tube narrow, curved, then 
widening gradually, lobes somewhat spreading, eglandular hairy outside, inside with 
glandular hairs at the base of the upper lobes and dorsally in the tube; tube 12.5-15.5 
mm long dorsally, 15.9-19.5 mm ventrally, c. 15 mm laterally between lips; lobes 
broadly orbicular to ovate, apices rounded, upper lobes 3-4.2 x 4-6.6 mm, lateral 
lobes 4.5-5.7 x 5.5-7 mm, ventral lobe 5-7.5 x 6.2-8 mm. Stamens arising 9-11.2 
mm above the corolla base, filaments straight, glabrous, 2-2.5 mm long, 0.4 mm wide; 
anthers white, with a dimorphic indumentum of long brown hairs above dorsally and 
short white hairs below, 1.9-2.2 x 1.3-1.8 mm, apically joined by a connective, thecae 
more or less parallel; staminodes reduced, c. 0.2 mm long. Disk annular, 0.4-0.8 mm 
high. Pistil c. 12 mm long; ovary 5.5-7.5 mm long, c. 1.2 mm diameter, papillose at the 
base, pubescent above; style 6-7.5 mm long, pubescent; stigma c. 0.8 mm long. Fruit 
green, to 7 cm long, 0.8-1.2 mm diameter, eglandular hairy or glabrescent, straight or 
slightly curved. Seeds maroon, narrowly elliptic, acuminate 0.3-0.5 x 0.1-0.2 mm. 
Distribution. Northern Thailand (Nan). 
Habitat. On limestone in evergreen forest. 
Provisional IUCN conservation assessment. Data Deficient (DD). Microchirita woodii 
