12 2 Dipterocarpacea. {Doona. 



Moist low country up to 2500 ft. or more ; rather common. Near 

 Navalapitiya ; Ambagamuvva ; Singhe Raja Forest ; Morowak Korale 

 (Capt. Walker) ; Pelmadulla (F. Lewis). Fl. April. 



Endemic. 



Easily recognised by the fine small raised reticulation of the upper 

 surface of the leaf. 



The name 'Yakahalu' is applied, with different prefixes, to several 

 other species of this family in South of Ceylon. This is called ' Beraliya- 

 Yakahalu ' in S. Prov. There appear to be several varieties recognised 

 by the natives, and possibly more than one species are confounded here. 

 The fruit of the Ambagamuwa tree (2200 ft.) is shorter and has smaller 

 fruit-sep. than as above described. 



The fruits are dried, pounded, and made into flour for food, and are 

 largely consumed when they can be got, but are said to be produced only 

 every seventh year. It was abundant in the S. Prov. in 1887. 



6. D. cong-estiflora, Thw. Enum. 35 (i8i;8). Tiniya, S. 

 [Plate XL] 



C. P. 341 1. 



Fl. B. Ind. i. 312. 



A very large tree, young parts velvety - pubescent ; 

 1. 3^—4^ in., oval or ovate-oval, rounded at base, rather thick, 

 shortly acuminate, lat. veins 10-12, curved, more conspicuous 

 above than beneath, petioles \ in., rugose ; fl. \ in. diam., very 

 shortly pedicellate, crowded at the ends of branches of short, 

 stout, pubescent, axillary and terminal panicles ; sep. glabrous, 

 oblong, obtuse ; pet truncate, notched ; enlarged fruit-sep. 

 if-2 in., often unequal, wings oblong-linear, nut f in., much 

 exceeding the thickened bases of sep. 



Moist low countr)'; rare. Hiniduma; Hewesse; Singhe Raja ; Bam- 

 barabotuwa ; Gilimale, Sabaragamuwa (F. Lewis). P^l. August, Sept.; 

 pale pink. 



Endemic. 



Wood pale reddish -brown, rather light, moderately hard. 



7. D. cordifolia, Thw. Eman. 35 (1858). Beraliya, 5. 



C. P. 3340. 



Fl. B. Ind. i. 312. 



A large tree, bark smooth, coming off in large flakes, 

 young parts slightly pubescent ; 1. 4-6 in., ovate or oblong- 

 oval, rounded or slightly subcordate at base, tapering to long 

 caudate-acuminate apex, lat. veins about 10, often less, curved, 

 conspicuous beneath only, petioles \^ m., fl. and ripe fruit 

 not seen. 



Moist low country ; rather rare. Sabaragamuwa; Lihinigala, Hewesse, 

 abundant ; Lunugala ; Uva(.') ; near Matara (^Walker). Fl. Feb. ; said 

 to flower every third year. 



Endemic. 



Only seen by me in very young fruit in 1887. 



Hop-like globular leafy galls are abundantly produced on this species, 



