Acrotrcjna.l DilleniacecB. g 



Rootstock erect, slender ; 1. small, 2-$^ in. long, linear- 

 oblong or linear-spathulate, acute, rounded at base, spinous- 

 denticulate, glabrous above, adpressed-hairy on veins beneath; 

 ped. with adpressed hairs ; stam. 1 5-20. 



Moist low country by streams ; rather rare. Adam's Peak ; Ratnapura ; 

 Singhe Raja Forest, in several places, abundant. Fl. March, April. 



Endemic. 



This has the appearance of a quite distinct species, though its cha- 

 racters are hard to define. 



5. A. Thwaitesii, Hk./. and Th. in Kew Journ. Bot. viii. 241 (1856). 

 Thvv. Enum. 3. C. P. 3364, 3969. 



Fl. B. Ind. i. 34. Kew J. Bot. I.e., t. iv. A. 



L. pinnatisect or pinnate, linear-lanceolate in outline, the 

 segments or leaflets oblong, usually serrate-dentate, hairy on 

 both sides, petioles very short ; pedicels long, hairy ; stam. 

 15-25, evenly arranged (not in 3 groups). 



Moist low country ; very rare. Dolosbagie District only. Fl. Feb. 

 March. 



Endemic. 



C. P. 3969 (var. stolofu'fera, Thw. MS.) is a curious form with long 

 trailing runners rooting at the nodes. There are specimens under C. P. 

 3364 which appear to be hybrids with some form of A. tmiflo7-uin, the 

 leaves being deeply cut at the lower part only. 



6. A. dissectuxn, Thxv. in Kew Journ. Bot. viii. 242 (1856). 

 Thw. Enum. 3. C. P. 3393. 



Fl. B. Ind. i. 34. Kew Journ. Bot. I. c. t. iv. B. 



L. deeply pinnatisect or pinnate, lanceolate in outline, 

 acute ; rachis stout, segments or leaflets very unequal, silky 

 beneath, the larger ones again pinnatisect with linear, unequal, 

 bristle-pointed segments, the smaller ones linear, entire ; 

 peduncle short ; stam. about 30. 



Moist low country ; very rare ; only collected at Hewesse, Pasdun 

 Korale ; and in Hiniduma Pattu. Fl. April. 



Endemic. 



The plant at Hiniduma was growing along with A. tinifloriwi, var. 

 sylvatiaan, and many of the specimens are believed by Thwaites to 

 be hybrids between the two species, the various forms of the leaves 

 making a complete connecting chain. 



7. A. lyratum, Thw. in Kew Journ. Bot. viii. 242 (1856). [PLATE I.] 

 Thw. Enum. 3. C. P. 3392. 



FL B. Ind. i. 34. 



Rootstock very stout, ascending ; 1. erect, large, 8-10 in. 

 long, coriaceous, glabrous, lyrate-pinnatisect, the terminal 

 lobe very large, obtuse, cordate at base, denticulate, the lower 

 lobes in 4 or 5 pairs, deflexed, rounded, with a few sharp 

 prickly teeth, petiole broadly winged ; raceme erect, peduncle 



