6 Dilleniacece. [Acrotrema, 



upper part, rigid, strongly ribbed with numerous parallel 

 lateral veins extending to the margin ; scabrous especially 

 above ; inflor. paniculate, terminal and from upper leaf axils ; 

 fl. numerous, small, |— ^ in. diam. ; sep. unequal, rounded, 

 obtuse, ciliate and pilose ; pet. usually 4, spreading or re- 

 flexed ; stam. very numerous, filaments long, gradually dilated 

 upwards ; carp, solitary, style long apiculate ; ovary i -celled, 

 with 3 or 4 ovules ; follicle ovoid, i-|- in. long, tapering into a 

 sharp beak ; pericarp thin, smooth and shining, surrounded 

 at base by persistent sep. ; seed globose, compressed, black, 

 with a fimbriate aril. 



Rather common in the low country of the moist region — Heneratgoda; 

 Ratnapura ; Kalutara ; Ambagamuwa. Rarer in the dry region — Kur- 

 unegala ; Puttalam. Fl. March-June ; white. 



From Eastern Bengal to Singapore, the Malay Islands, the Philip- 

 pines, and S. China ; not in Peninsular India. 



2. TETRAC&RA, L. 



A woody climber ; sep. and pet. 4-6 ; anther-cells widely 

 separated ; carp. 3-5, ovules numerous ; follicles 2-5, each 

 with 1-3 seeds; seeds surrounded by a toothed aril. — Species 

 24; 4 in Fl. B. Ind. 



T. laevis, Vahl, Symb. iii. 71 (1794). Et-korasa-wel, S. 



Hk. f. and Th. Fl. Ind. 62. Thw. Enum. 2. C. P. 1016. 

 Fl. B. Ind. i. 31. Wight, Ic. t. 70 {T. Rheedei) (not good). 



A woody climber with smooth flexuose branches, glabrous 

 throughout ; 1. very shortly stalked, 3-5 in., oblong-oval, 

 tapering at base, caudate-acuminate and often twisted at 

 apex, entire or distantly denticulate, lat. veins parallel, curved, 

 prominent ; fl. i in. diam., in small terminal panicles ; sep. 

 large, broadly oval, rounded, persistent, silky in centre within ; 

 pet. caducous ; stam. very numerous, persistent ; carp. 3-5, 

 styles long ; follicles beaked, smooth, brown, surrounded by 

 persistent cal. and stam. ; seeds 2 or 3. 



Low country, rare. Kalutara ; Puttalam. Fl. Aug. Sept. ; white. 

 Also in Malabar, Java, and Borneo. 

 I have not seen living specimens. 



3. ACROTREMA, Jack. 



Perennial herbs with an ascending or horizontal rootstock; 



1. all radical with broad sheathing bases (adherent stip.) and 



the lateral veins parallel ; infl. in axillary racemes, with a 



usually short peduncle and long pedicels which look like radical 



