Flora of the Malayan Peninsula. 
89 
placentas intruded; style linear, lobes 2, hemispheric. Capsule 2-valved 
or breaking up irregularly. Seeds very small, polyhedral. — Distrib. 
Species about 25, extending from Africa through South-east Asia to 
Australia. 
One stamen only perfect ; corolla irregular . . . , 1. G. diffusa. 
All stamens perfect ; corolla regular . . . . . . 2. C. pentanthera. 
Sub-genus 1. Eu-Canscora. Calyx 4-toothed. Corolla sub-bilabiate. 
Stamens 4 ; 1 larger perfect, 3 shorter smaller or obsolete. 
1. Canscora diffusa, B. Brown, Prodr. (1810) 451 in Obs. Erect 
annual, 4 to 20 in., much branched upwards. Leaves l - 5 by -5 in., lanceo- 
late or elliptic, 3-nerved, often petioled, upper smaller. Cyme diffuse ; 
lower bracts at its divisions p 5 in. long, ovate, upper much smaller. Calyx 
in. long; teeth lanceolate-linear. Corolla rose-coloured ; tube ^ in., 
lobes l in. Capsule oblong, as long as the calyx. DC. Prod. IX. 64 ; 
Benth. El. Austral. IV. 372; Hook. fil. El. Br. Ind. IV. 103; Trimen 
FI. Ceyl., III. 184. Exacum diffusum, Willd. Sp. PI. I. 637. Ortho- 
stemon erectum, E. Br. Prod. 451 ; DC. l.c. 63. 0. Hugelii, DC. l.c. 63. 
Pladcra virgata, Eoxb. PI. Ind. ed. Carey & Wall. I. 417 ; Hook. Bot. 
Misc. III. 88 t. 25. 
Singapore : Lobb 345. A common species, extending from East 
Tropical Africa throughout India to Australia and the Philippines. 
Sub-genus 2. Pentanthera. Stamens 5 (or 6), equal, anthers all 
similar, perfect. Corolla-lobes 5 (or sometimes 6), equal, dextrorsely 
contorted in the bud. 
2. Canscora pentanthera, C. B. Clarke, sp. nov. A slender under- 
shrub, 18 in. high, glabrous except the minutely gland-puberulous (young) 
petioles ; stem terete with many opposite branches. Leaves opposite, 
3 by 1 in., ovate-lanceolate, acuminate, attenuate at the base; petiole 
0 to '2 in. Cymes loosely, repeatedly dichotomous, often carrying 10 
flowers ; bracts at the divisions similar to the leaves, but gradually 
smaller, becoming sessile, a few pairs connate into perfoliate bracts. 
Floivers solitary, -5 in. long, on pedicels -12 to - 5 in. long. Calyx '35 in. 
long, membranous ; tube triquetrous, narrowly 3-winged, ovoid-cylindric ; 
lobes less than one-third the length of the tube, ovate, imbricate, apieulate. 
Corolla white (Ridley) ; tube as long as the calyx, lobes 5 (or not rarely 
6), oblong-elliptic, equal, sub-erect, contorted dextrorsely ( sensu Lin- 
neano) in the bud. Stamens 5 (or 6 in the 6-lobed corolla), equal, 
perfect ; filaments inserted in the upper part of the corolla-tube from 
which the erect anthers are half-exsert ; anther-cells 2, oblong or linear- 
oblong, opening by longitudinql slits; pollen 25 by 20 p, ellipsoid, 
irregularly longitudinally striate. Ovary oblong, when young thin, 
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