742 ASCLEPIADE& (Brown). | Pentarrhinum. 
green or with the apical half more or less suffused with purple- 
brown ; corona-lobes about 1 lin. long, equalling the staminal 
column, obconic, thick and fleshy, narrowly channelled down the 
face, truncate, with a slightly projecting rim at the top, from 
whence a stout central subulate tooth is directed forwards over the 
tips of the anthers, cream-colour or yellow ; follicles solitary, 14-24 
in. long, about } in. thick, lanceolate, acute or acuminate into a 
beak, more or less tuberculate-echinate, puberulous or glabrous ; 
seeds 3-34 lin. long, 2 lin. broad, ovate, plano-convex, with a thin 
wing-like margin, toothed at the broadest end, rugose or sub- 
reticulate on both sides with short irregular linear ridges, brown, 
glabrous. Decne in DC. Prodr. viii. 553; Harvey, Gen. S. Afr. Pl. 
ed. i. 224, and Thes. Cap. i. 7, t. 11; Schlechter in Engl. Jahrb. xviii. 
Beibl. 45, 23 ; xx. Beibl. 51, 43; and xxi. Beibl. 54, 10; Journ. 
Bot. 1896, 456; K. Schum. in Engl. and Prantl, Pflanzenfam. iv. ii. 
244, and in Engl. Jahrb. xxx. 385; N. E. Br. in Dyer, Fl. Trop. 
Afr. iv. i. 378.—Cynanchum foliis cordato-sagittatis, ke., Burm. Rar. 
Afr. Pl. Dec. 2, 38, t. 16, fig. 2. 
Coast Reaion: Uitenhage Div.; near Enon, Drege, 2220! Baur, 1025! 
Alexander [Prior]! Klein Winterhoek, 800 ft., Drége, 3432 ! 
CENTRAL Reeion: Jansenville; by the Sundays River near Blue Krantz, 
Drége ! Somerset Div. ; near Somerset East, Atherstone, 155! Graaff Reinet Div. ; 
near Graaff Reinet, Bolus, 186 ! along the Sundays River, Bowie! Burchell, 2878 ! 
WEsTERN Recion: Great Namaqualand ; ‘Tiras, Schinz, 25 ! 
‘Katanart Region: Griqualand West; Vetberg Hills, Bowker, 26! Orange 
River Colony ; Olifantsfontein, Rehmann, 3489! -and without precise locality, 
Cooper, 2714! Transvaal; at the warm baths on McCord’s farm, Burtt Davy, 
1201! near Pretoria, Conrath, 1003! Rustenberg, Miss Nation, 127 ! Rooiplaat, 
Pienaars River, Miss Leendertz, 758 ! j 
Eastern Reaion : Transkei; by the Bashee River, Bowker, 487! near Kentani, 
Miss Pegler, 288! Griqualand East ; near Clydesdale, 2500 ft., Tyson, 2573! and 
in MacOwan and Bolus Herb. Norm. Austr.-Afr., 1320! Natal; near Durban, 
McKen, 825! Wood, 266 ! 10167! Hilton, 3700 ft., Dimock Brown, 230! Tintern, 
5000 ft., Evans! and without precise locality, Gucinzius! Gerrard, 319 ! 825! 
1311! Wood, 1207! 10166! 
Also in Tropical Africa, 
Imperfectly known species. 
2. P. coriaceum (Schlechter in Journ. Bot. 1894, 357); stem 
twining, with somewhat woody branches, thinly velvety towards 
the apex, rather densely leafy ; leaves with a short velvety petiole, 
coriaceous, 14-2} in. long, {-2 in. broad below the middle, ovate- 
cordate, acute or acuminate, glabrescent, with subrevolute margins ; 
flowers smaller than in P. insipidum, in many-flowered cymes, not 
exceeding the leaves, lateral at the nodes; peduncle and pedicels 
unequal in length, thinly pilose ; sepals scarcely 1 lin. long, lanceo- 
late, acute, puberulous ; corolla-lobes spreading, 2 lin. long, 1 lin. 
broad at the middle ; corona-lobes thinner and much more flattened 
out than in P. insipidum, subquadrate, emarginate at the apex, with 
a flattened appendage just below the top on the inner face, inflexed, 
