Alstonia.'] xciv. APOCYNACEJE. (J. D. Hooker.) 643 



TROPICAL HIMALAYA; Nipal, Wallick, near the Sikkim frontier, on dry rocks, 

 J. D, H. BHOTAN ; Griffith. 



Very similar to A. venenata, but the leaves are more coriaceous, always more or 

 lees pubescent beneath, and much fewer in a whorl, with usually long (sometimes 

 in.) subulate interpetiolar glands; the follicles are longer (4-7 in.), more slender, 

 straighter, and sessile ; the seeds are smaller and narrower. 2?. Sebusii, Van H. & 

 Muell. Argan., is founded on Griffith's Bhotan specimen, in which the leaves and 

 flowers are those of A, neriifolia, but the pods, which are separate, belong to A. 

 venenata. 



SECT. III. Dissuraspermnm. Leaves with distant nerves. Corolla- 

 lobes overlapping to the right Disc annular. Follicles long, slender, cylindric. 



5. A. macrophylla, Wall. Cat. 1648; leaves 6-12 in. oblanceolate or 

 elliptic-lanceolate obtusely acuminate pubescent or glabrous beneath, nerves 

 16-20 pairs, cymes numerous large terminal sessile or peduncled with slender 

 spreading many-flowered branches, corolla-tube glabrous throat villous. A. DC. 

 Prodr. viil 409. A, costata, Watt. Cat. 1649, not of Br. 



PEXANG; Wallich, Maingay (KewDistrib. 1066/2, 1070/2). DISTRIB. Java, Timor, 

 Philippine Islds. 



Leaves thinly coriaceous, 2^-3 in. broad, shining above, rather paler beneath ; 

 nerves spreading, about ^ in. apart ; base narrowed into a stout petiole - in. long. 

 Cymes copious, lax, pubescent; bracts 0; flowers small. Calyx campanulate, 

 lobes short obtuse. Corolla-tube ^ in., mouth contracted ; lobes rounded, pubescent, 

 thick. Disc annular. Ovary ovoid, acute, glabrous. Follicles very ^ numerous, 

 slender, pendulous, 12-18 by J in., terete, membranous. Seeds slender, | in. long. 



6. A. angnstifolia, Wall. Cat. 1650; leaves glabrous obovate or ob- 

 lanceolate obtusely acuminate or obtuse, nerves 10-15 pairs, cymes numerous 

 branched densely pubescent many-flowered, peduncle and branches stout, calyx 

 urceolate lobes very short, corolla-tube densely pubescent throat villous. ~A. 

 DC. Prodr. viii. 409. 



SINGAPORE; Wallick, T. Anderson. MALACCA and PENANG ; Griffith, Maingay 

 (KewDistrib. 1066, 1067, 1070, 1070/1, 1070/2). 



A tall tree (Maingay), leaves much smaller and more coriaceous than A. macrophylla, 

 always quite glabrous, with fewer nerves and longer petioles (f-1 in.) and with denser 

 more pubescent cymes and flowers. Penang specimens have very broad leaves, 6-7. 

 by 3 in. p 



SPECIES OF DOUBTFUL POSITION. 



7. A. KTJRZII, Hook.f. ; a tree 80-100 ft., quite glabrous; leaves whorled, 4-7 in. 

 long, oblong to obovate-oblong, tip retuse or rounded, base acute or obtuse, coriaceous, 

 glaucous beneath ; nerves parallel, numerous, slender ; flowers small, white, densely 

 cymulose ; pedicels short and stout ; cymelets shortly peduncled, whorled, forming a 

 long peduncled, glabrous axillary panicle ; follicles linear. A. spectabilis, Kurz For. 

 Fl. ii. 183, not of Brown. Forests of the Andaman Islds., Kurz. 



This is obviously not Brown's A. spectabilis, which is probably closely allied to A. 

 macrophylla. In Journ. As. Soc. 1877, ii. 254, Kurz says of this, "hardly specifically 

 distinguishable from A. scholaris." 



8. A. GRANDIFOLIA, Miquel Fl. Ind. Bat. Suppl. 555 ; leaves 5-7 in a whorl, 

 unequal, 12-16 by 4-5 in., narrowly obovate or oblanceolate, obtusely apiculate, 

 glaucous beneath, midrib stout, nerves 20 pairs strong ; petiole very stout, 2 in. 

 Singapore, T. Anderson. Of this I have seen only two leaves, which precisely agree 

 with Miquel's from Sumatra. 



17. DVEA, J2bo&./. 



Glabrous trees. Leaves whorled, petioled. Flowers small, in terminal and 

 axillary unabellately branched cymes. Calyx hemispheric, shortly 5-lobed, 

 eglandular within. Corolla salver-shaped, tube short; lobes overlapping to 



TT 2 



