Hoodia] ASCLEPIADE (Brown). 899 
5. H. Burkei (N. E. Br.) ; plant more than 1 ft. high, resembling 
H. Gordoni ; tubercles of the stems tipped with a slender brown 
spine 1~—} in. long ; pedicels 4-8 lin. long, glabrous ; sepals 24-3 lin. 
long, ovate-lanceolate, acuminate, glabrous ; corolla 34-4 in. in 
diam., slightly concave or flattish, subcircular, with the lobes very 
obscurely indicated by 5 very slight emarginations alternating with 
5 awn-like points } in. long, glabrous and smooth all over, not 
roughly papillate on the central area; corona equalling or perhaps 
slightly exserted from the small cup-like tube, apparently dark 
purple-brown ; outer corona cupular, 5-lobed ; lobes } lin. long, 
7 lin. broad, transverse, very broadly notched to about half-way 
down ; inner corona-lobes }—2 lin. long, oblong-linear, obtuse, closely 
incumbent upon the backs of the anthers, broader than and 
exceeding them and meeting or crossing. at their tips, dorsally 
connected to the inflexed sinuses of the outer corona. Stapelia 
Gordoni, Hook. in Lond. Journ. Bot. 1843, 164, and in Ic. Pl. under 
tt. 605-606, not of Masson. Scytanthus Gordoni, Hook. Ic. Pl. t. 625, 
and in Lond. Journ. Bot. 1846, 111. 
CENTRAL ReGion: Beaufort West Div. ; near the Gamka River, Burke, 464 ! 
Prince Albert Div. ; Willow Fountain (Wilgefontein), Burke, 463! without 
locality (but probably collected at one of the above places when travelling with 
Burke), Zeyher, 1142! and Zeyher, 1144, in fruit only, is probably this species ! 
This species has hitherto been confused with H. Gordoni, but I find that 
it conspicuously differs from that species by the centre of the corolla being 
smooth, not roughly papillate as in H. Gordoni, the spines on the stems 
seem also to be more slender and of a different brown. Although Burke’s 
localities are correctly cited in the London Journal of Botany, 1846, 111, yet it is 
erroneously stated in Jcones Plantarum, under tt. 605-606, that Burke discovered 
this plant on the banks of the Orange River. But the point where Burke and 
Zeyher crossed the Orange River (according to Burke’s diary) is over 450 miles 
from the localities where Burke collected it on the return journey from the 
Transvaal, nearly 600 miles from the home of the true H. Gordoni, and where 
no Hoodias have yet been discovered. 
6. H. Gordoni (Sweet, Hort. Brit. ed. 2, 359); plant 1-1} ft. 
high, with erect branches about 2 in. thick, glaucous-green, with 
the numerous angles beset with slender light brown spines 3-44 lin. 
long ; pedicels }—} in. long, glabrous ; sepals 24-3 lin. long, ovate- 
lanceolate, acuminate, glabrous ; corolla in bud somewhat resembling 
a narrow pentagonal cone, with 5 very broad wings descending from 
the short central point to the base, truncate at the top and slightly 
hooked at the outer angles; when expanded 3-4 in. in diam., sub- 
circular with 5 very broad crenations, each very abruptly tipped 
with a slender arista-like point 24-3 lin. long, very slightly concave 
or nearly flat, with or without revolute margins, pale purple, 
radiately marked with pale greenish-yellow stripes along the veins, 
thickly sprinkled on the central part with minute dark red papille, 
elsewhere quite glabrous, but with a somewhat velvet-like appear- 
ance ; tube very small, about } in. in diam., just containing the 
corona, slightly raised around the mouth; outer corona-lobes 
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