Duwalia. | ASCLEPIADE& (Brown). 1035 
replicate to the base into vertical plates, very spreading, glabrous. 
Stapelia concolor, Salm-Dyck, Hort. Dyck. 372; Decne in DC. Prodr. 
viii. 662. 
The origin of this species is unknown, and so far as I am aware no specimen of it 
exists, as I have been informed that no specimens of the Stapelias described by 
Salm-Dyck were preserved nor drawings made of them. Salm-Dyck states of it: 
‘*This very singular species occurs in gardens under the name of Stapelia barbata, 
by the form of its branches and the unopened flowers it would seem to belong to 
Huernia, but is altogether related to the section Duvalia. It-is near Stapelia 
reclinata, but differs by its thicker exactly tetragonous branches and flowers twice 
as large.” It may be a native of Namaqualand. 
16. D. transvaalensis (Schlechter in Engl. Jahrb. xx. Beibl. 
51, 54); stems erect, up to 2} in. long, about 5 lin. thick, 6-angled, 
glabrous, with spreading teeth at the angles; flowers few together, 
from below the middle of the stems; pedicels up to ? in. long, 
glabrous ; sepals } in. long, Jinear-lanceolate, very acute, glabrous ; 
corolla-lobes erect, 4 in. long, ovate-triangular, acuminate, glabrous 
on both sides ; outer corona-lobes connate into an entire fleshy ring ; 
inner corona-lobes fleshy, rhomboid in outline, attenuate-beaked 
towards the apex, obtuse. Schlechter in Journ. Bot. 1898, 477 ; 
N. E. Br. in Dyer, Fl. Trop. Afr. iv. i, 503. 
pmo Recion : Transvaal ; sandy places near Klipdam, 4600 ft., Schlechter, 
Also in Tropical Africa. In the Journal of Botany above quoted, Dr. Schlechter 
refers D. dentata, N. E. Br., as a synonym of this, but without having compared 
the specimens. His description, however, makes no mention of the very striking 
vibratile cilia nor the minutely puberulous annulus of that species. Should they 
upon comparison prove to be identical, D. transvaalensis then becomes a synonym of 
D. polita, N. E. Br. ; 
17. D. glomerata (Haw. Syn. Pl. Succ. 46, and Suppl. 14) ; stems 
prostrate, glomerate ; flowers about 4 together; corolla rather 
large, blackish-red, paler at the base of the annulus ; lobes replicate, 
except at the apex, naked (probably glabrous or without cilia is 
intended) ; annulus very obtuse, subrepand, pubescent when viewed 
with a lens. G. Don, Gen. Syst. iv. 122; Schlechter in Journ. Bot. 
1898, 476. Stapelia glomerata, Schultes, Syst. Veg. vi. 46; Decne in 
DC. Prodr. viii. 664. 
SourH Arrica: without locality, introduced into cultivation before 1808, ex 
Haworth, 
18. D. levigata (Haw. Syn. Pl. Succ. 46, and Suppl. 14) ; corolla- 
lobes horizontal ; annulus very large. G. Don, Gen. Syst. iv. 122; 
Schlechter in Journ. Bot. 1898, 476. Stapelia levigata, Schultes, Syst. 
Veg. vi. 46; Decne in DC. Prodr. viii. 664. 
-_ Sourn Arrica: without locality, introduced into cultivation before 1808, ex 
fo) ee ott sy ihe | 
Stated to be allied to D. tuberculata, Haw., and D. radiata, Haw., to which it 
__ is very similar, but has more horizontally spreading petals and a larger annulus. 
