254 LXXXV, ASCLEPIADEZ (BROWN). [ Batesanthus. 
on a short slender stalk. Style shortly conical at the apex. Follicles. 
stout, erect, parallel, united at their base. Seeds flattened, keeled on 
one face, densely fringed all round with very long white hairs, other- 
wise glabrous.—A twining shrub with milky juice. Leaves opposite, 
large, petiolate. Stipules frill-like reflexed. Flowers moderately large, 
in long lax panicles.—Perithryx, Pierre in Bull. Soc. Linn. Paris, 
1898, 65. 
Monotypic, endemic, 
A remarkable genus, very similar to Chlorocodon in habit and stipules, but with 
a coronal structure more like that of Gymnolema. 
1. B. purpureus, V. L. Br. in Hook. Ic. Pl. t. 2500. A woody 
twiner ; stems glabrous, slightly verrucose, chocolate-coloured. Leaves 
distant ; petiole 1} in. long; blade 6-7 in. long, 3-34 in. broad, oblong 
or elliptic-oblong, cuspidate-acute, cordate at the base, glabrous on both 
sides. Stipules interpetiolar, transverse, reflexed, toothed, very con- 
spicuous. Panicle axillary, about 1 ft. long, including the 3-4 in. long 
peduncle, lax, its branches 13-2 in. distant, opposite, ?}-21 in. long, 
1—3-flowered ; bracts 1 lin. long, ovate-lanceolate, acute, very deciduous 
leaving a ring-like scar; pedicels 3-7 lin. long, glabrous. Sepals 
1-1} lin. long, ? lin. broad, ovate, subacute, glabrous, minutely ciliolate. 
Corolla large, rotate or with the lobes campanulately spreading, dark 
purple, 5-lobed to within 1} lin. of the base; lobes 9 lin. long, 5-54 lin. 
broad, elliptic-oblong, very obtusely rounded at the apex, glabrous ou 
both sides, not ciliate. Corona indistinct, annular, shortly 5-lobed; 
lobes adnate to the base of the staminal-filaments, emarginate. Staminal- 
filaments, about 4 lin. long, linear; anthers ? lin. long, linear-oblong, 
connate at the apex by their short ovate appendages, quite glabrous. 
Style shortly conical at the apex, acute. Follicles about 44 in. long, 
? in. thick, fusiform, shortly beaked, erect, parallel, connate for about 
fin. at their base, glabrous. Seeds 4-5 lin. long, 1}-2 lin. broad, 
lanceolate or ovate-lanceolate, compressed, acutely keeled on one side, 
fringed all round the margin (but more densely at the two ends), with 
very long white hairs, otherwise glabrous, blackish.—K. Schum. 12 
Engl. & Prantl, Pflanzenfam. Nachtr. zum. ii—iv. 286, and Nachtr. 1, 
zum. iiiv. 60.—Perithryx glabra, Pierre in Bull. Soc. Linn. Par's, 
1898, 66. 
Upper Guinea. Cameroons: Efulen, Bates, 383! 
Lower Guinea. Gaboon : Libreville, on the Gaboon River, Klaine, 513! 
When enclosed in the follicles, some of the hairs around the margin of the seeds 
are reflexed so as to conceal the glabrous sides, but they probably spread out when 
the seeds are liberated from the follicle. 
5, CHLOROCODON, Hook. f.; Benth. et Hook. f. Gen. Pl. ii. 74°. 
Calyx 5-partite. Corolla campanulate-rotate, 5-lobed nearly to the 
base; lobes overlapping to the left in bud. Corona of 5 10 
arising from the base of the staminal-filaments, free to their base, very 
