DESCRIPTIONS OF NEW AND RARE INDIAN PLANTS. 161 
Dr. Burck (in Ann. Jard. Bot. Buitenzorg) expands the definition of tho genus айса so as to 
inelude not only the closely allied Synaptea, but also the genera Isauris W. A., Retinodendron, Korth., 
and Pachynocarpus, Hook. fil. To the union of Synaptea with Vatica I see no objection ; for the 
whole difference between the two consists in perfect freedom of the fruit in Vatica from the enlarged 
calyx, whereas in Synaptea there is a slight adhesion to the calyx at the very base. But for 
the inclusion of Pachynocarpus I see no sufficient justification ; for in this genus the calyx does not 
expand into membranous wings, but forms a dense fibrous cover for the fruit, which it tightly 
embraces , and to which it is quite adnate. As regards /sauzis and Retinodendron, they appear to me to 
be undistinguishable from each other by any but trivial marks; but they differ sufficiently in calyx 
frem Райса to be treated as a genus under the older name Retinodendron. 
PLATE 194. 
PACHYNOCARPUS STAPFIANUS, King in Journ. As. Soc. Bengal, for 1890, pt. 2, р. 136. 
A tree 80 to 100 feet high; young branches rather stout, scaly-pubescent at 
first, ultimately glabrous. Leaves coriaceous, broadly elliptic or obovate-elliptic, the 
apex rounded, slightly narrowed to the rounded or subcuneate base: upper surface 
glabrous, shining, the lower paler, minutely and sparsely scurfy-puberulous on the 
midrib and nerves; main nerves 10 to 13 pairs, oblique, prominent on the lower, 
depressed on the upper, surface; length 5 to 8 in., breadth 2:75 to 4'5 in., petiole 3 
to 1 in. Flowers unknown. Ripe fruit almost solitary, 2'5 to 3 in. long, on a woody 
raceme, globular, slightly apiculate, 1:25 in. diam., closely invested by the gamose- 
palous, 5-toothed, thickened, woody, rugose, glaberulous calyx. 
Perak: King’s Collector, Nos. 5932 and 6132. 
This very distinct species was first recognised as a Pachynocarpus by Dr. O. Stapf, of the Kew 
Horbarium, after whom I have named it. Its flowers are as yet unknown, but it is readily identified 
by its leaves. 
Prate 194. Pachynocarpus Stapfianus, King. Fruiting branch: ¿f natural size, 
PLATE 195. 
ARISTOLOCHIA Совтіѕп, n. sp. King. 
Nat. Ord. Aristolochiacee. 
A woody climber 10 to 15 feet long; stem slender, glabrous. Leaves sub-coriaceous, 
alternate, cleft to within an inch of the base into three sub-equal lobes; the central 
rather longer than the two lateral lobes, oblong-oblanceolate, acuminate, 3-nerved; the two 
lateral subfaleate, obliquely obovate-oblong, very obtuse, 2-nerved, the venation of all 
three transverse; length of the side lobes 3°5 to 45 in. breadth at apex 1°25 to 
1:5 in., the middle lobe 1 in. longer, but not so broad; petioles 2:5 in. long, slender. 
Racemes 1 or 2 from an axil, about 2 in. long, with numerous sub-horizontal amplexicaul 
cordate more or less rose-coloured bracts “5 in. long. Flowers few, about 15 to 2 in. 
long, the perianth of a beautiful dark-blue colour, springing. from the apex of the 
narrowly cylindiie slightly clavate ovary, its lower part expanded into a narrowly ovoid 
