Materials f 07' a Flora of the Malayan Peninsula. 



21 



Leaves of each pair similar in shape, but very unequal in 

 size or one quite suppressed. Stamens 6. Fruit as 

 in En-Sonerila (§ Sonerilopsis, J/i'g.) 



Leaves of each pair very dissimilar in shape and size, one 

 very small and more or less rotundate or reniform- 

 cordate, often deciduous. Cymes usually from the axils 

 of the small leaves, hence often apparently leaf-opposed. 

 Anthers 3, oblong, obtuse, not over "15 in. long. Fruit 

 more or less turbinate or semiglobose, obscurely 

 trigonous, usually conspicuously muricate ; valves not or 

 very slightly exceeding the margin of the mature calyx, 

 often not or indistinctly separating from each other at the 

 periphery, but each of them always splitting into 2 

 membranous teeth in the depressed centre of the fruit. 

 (§ Hexodon, Stapf) : — 



Cymes distinctly, densely and persistently bracteate, 

 distinctly and often long peduncled : — 



Cymes simple or 2 or more, sessile on a common 

 peduncle, forming a dense head : — 



Cymes simple, at length 1-1*5 in. long ; leaves 

 obliquely oblanceolate to obovate-oblong, 3-7 in. 

 by 1-15 in. : — 



Leaves fleshy, glabrous with the exception of 

 the minutely strigillose nerves of the underside ... 

 Leaves membranous, with rather long and spread- 

 ing hairs beneath and along the margins 

 Cymes usually 2 or more, sessile on a common 

 peduncle, very short, gathered in a dense head ; 

 leaves obliquely obovate, elliptic or oblong, 4-6 in. 

 by 1-75-3 in. ... 

 Cymes usually 3 or more on a common peduncle, each 

 with a special peduncle, gathered in a loose umbel ; 

 leaves obliquely elliptic, 3-5 in. by l75-2'75 in. 

 Cymes ebracteate, or indistinctly or deciduously bracteate 

 Cymes sessile or subsessile ; peduncle, if any, less 

 than '5 in., when mature ; fruit muricate : — 

 Cymes dense, indistinctly bracteate, sessile : — 

 Bracts linear, usually minute, or suppressed ; 

 calyx pubescent ; leaves fleshy, firm when dry, 

 glabrous above, shortly and adpressedly pubes- 

 cent or tomentose beneath 



Bracts filiform, ciliate, hidden among long spread- 

 ing hairs ; calyx shaggy ; leaves membranous, 

 very hairy on both sides 

 Cymes subsessile somewhat loose, ebracteate or 

 deciduously bracteate : — 



Leaves obliquely obovate-lanceolate to oblong, 

 2*5-6 in. by 1-25 in. :— 



Leaves somewhat fleshy, firm, when dry with 

 conspicuous transverse veins ; pedicels very 



23. S. heterostemon. 



24. S. integrifolia. 



25. 8. hracteata. 



26. 8, capitata. 



27. 8. caesia. 



28. 8. Nidularia. 



29. 8, brachyantha. 



429 



