Flora of the Malayan Peninsula. 89 



placentas intruded; style linear, lobes 2, hemispheric. Capsule 2-valved 

 or breaking up irregularly. Seeds very small, polyhedral. — Disteib. 

 Species about 25, extending from Africa through South-east Asia to 

 Australia. 



One stamen only perfect ; corolla irregular .. ..1. C. diffusa. 



All stamens perfect ; corolla regular .. .. ..2. C. pentanthera. 



Sub-genus 1. Eu-Canscora. Calyx 4-toothed. Corolla sub-bilabiate. 

 Stamens 4 ; 1 lai'ger perfect, 3 shorter smaller or obsolete. 



1. Canscora diffusa, E. Brown, Prodr. (1810) 451 in Obs. Erect 

 annual, 4 to 20 in., much branched upwards. Leaves 1-5 by -5 in., lanceo- 

 late or elliptic, 3-nerved, often petioled, upper smaller. Cy7ne diffuse ; 

 lower bracts at its divisions '5 in. long, ovate, upper much smaller. Calyx 

 ^ in. long; teeth lanceolate-linear. 6'oro^Za rose-coloured ; tube i in., 

 lobes I in. Capside oblong, as long as the calyx. DC. Prod. IX. 64 ; 

 Benth. Fl. Austral. IV. 372 ; Hook. fil. Fl. Br. Ind. IV. 103 ; Trimen 

 Fl. Ceyl, III. 184. Exacum cliff usum, Willd. Sp. PL I. 637. Ortho- 

 stemon erectum, E. Br. Prod. 451 ; DC. I.e. 63. 0. Hugelii, DC. I.e. 63. 

 Pladera virgata, Eoxb. Fl. Ind. ed. Carey & Wall. I. 417; Hook. Bot. 

 Misc. III. 88 t. 25. 



Singapore : Lohh 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 

 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. 

 Floivcrs solitary, -5 in. long, on pedicels -12 to -5 in. long. Calyx "30 in. 

 long, membranous ; tube triquetrous, narrowly 3-winged, ovoid-cylindric ; 

 lobes less than one-third the length of the tube, ovate, imbricate, apiculate. 

 Corolla white [Bidley) ; 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 longitudinal slits ; pollen 25 by 20 ^<, ellipsoid, 

 irregularly longitudinally striate. Ovary oblong, when young thin, 



7 299 



