278 XCI. GESNERIACER. 
3. UNCARIA, Burchell. 
Calyx 5-parted, persistent ; lobes linear, 1 shorter. Corolla 
tubulose-funnel shaped, equal at base, with a subequal, 5-lobed 
limb, the lobes obtuse. Stamens 4, included, didynamous, in 
the base of corolla-tube, with a rudiment of a fifth ; anthers 
ovoid. Ovary 2-celled; ovules several in each cell, crowded, 
2-seriate ; stigma 2-lamellate. Fruit igneous, at length im- 
perfectly opening, 2-celled, angularly lobed, the lobes simple, 
branched, or sometimes ending in a hooked, very rigid spine. 
Seeds numerous, oblong, angular, rough.— Harpagophytum, 
DC. Prod. ix. p. 257. 
Prostrate, branching herbs, covered with minute white dots. Leaves 
opposite, petioled, 5-nerved, palmatifid, the lobes sinuate-cut. Pedicels 
axillary, 1-flowered, short. Corolla purple, with a pale tube. The famous 
“ Grapple-plant ” of Burchell, found in and beyond the Northern frontier, 
is U. procumbens,—3 species, all Northern. 
4. PTERODISCUS, Hook. 
Calyx small, 5-parted. Corolla funnel-shaped, with a 
spreading, 5-lobed, subequal limb. Stamens 4, didynamous, 
included, with a rudimentary fifth; filaments with thickened, 
woolly bases; anthers 2-celled, cells triangular, opening by 
oblong pores. Ovary ovate, oblique, with a dorsal gland at 
base; style included; stigma 2-labiate, the lobes subulate. 
Fruit leathery, indehiseent, roundish-compressed, broadly 
2-winged round the margin, the disk subtuberculate, 2-celled 
(or spuriously 6-celled, 2 cells fertile). Seed solitary, pendu- 
lous, oblong, terete-compressed, produced at the apex into a 
ee point, with a pit-like depression Hook. Bot. Mag. 
t. 4117. 
A tuberous-rooted herb, with opposite, oblong, sinuate-toothed leaves, 
on short petioles 2-glandular at base, and axillary, solitary, very showy 
purple flowers.—Found by Burke and Zeyher at Macalisberg. 
TRipe 2. SesaMEm. (Gen. 5-6.) 
5. SESAMOPTERIS, DC. 
Calyx 5-parted, at length deciduous. Corolla-tube widening 
upwards; limb plaited, sub-2-labiate, upper lip emarginate, 
lower semi-3-fid, the medial lobe long. Stamens 4, didyna- 
mous, with a fifth rudiment ; anthers oval-oblong. Stigma 2- 
lamelled. Capsules oblong, bluntly 4-angled or 2-lobed, 
furrowed, acuminate with the base of style, 2-valved, 2-celled 
(the valves incurved, as if 4-celled). Seeds compressed, with 
a membranous wing and flat cotyledons.— DC. Prod. ix. p. 
251. 
S. pentaphylla, DC., is an erect annual, with long petioled, 5-foliolate 
