2. Caralluma, R. Br. a e also Stapelia intermedia.) 
888 Outer corora in one piece, dise-like, pentagonal, resting on 
the rim of the annulus ar closing the spurious tube formed by 
it; corolla-lobes more or less folded leng siete and often into 
w 
' : 
to form a small pouch at the base, rarely quite free to the base. 
narrow vertical plates. 13. Duvalia ; 
KEY TO THE SPECIES COLLECTED BY 
SIR HENRY BARKLY. 
Genus 2.—Caralluma, R. Br. 
I, Angles of the stem with stout acute teeth, often spine-like. 
A. Segments of ey inner corona produced beyond the anthers into erect 
or recurved tips 
a. Pedicels 3-1 bak long, flowers wholly yellow. C. lutea, PI. 1901. 
aa. Pedicels less than 1 of an inch long, flowers not wholly yellow. 
Corolla-lobes stniiealy hispid-pubescent inside, the tips of the a 
coronal segments with short subulate points. C. mammillaris, 
Pi. 1902. gattened 
Corolla-lobes glabrous, the tips of the inner coronal segments Hatvent™ 
linear. C. linearis, Pl. 1903a. ; 
AA. Segments of the inner corona not produced into erect or recurved ee 
a. nor corona cup-shaped, not distinctly five-lobed. C. armata, *” 
902 
aa. Outer corona distinctly five-lobed. 
le- 
pe tte ciliate he al brown with yellow bars on the basal half of the 
it 
C. dep 
F lower os entirely light, yellow. C. hot eterer sub Pl. 
190. 
Hi. = of the stem hts obtuse, with distinct or nearly obsolete large 
enations, not toothed. 
Pedicels about 1 Sineds ong. C. ramosa, Pl. 1904. 
Pedicels 2-8 inches long. C. apert a, Pl. 1905a. 
Genus 5.—Trichocaulon, N. E. Br. re 
gyorurs she stem bese blunt, not ies oan flowers yellow, spotted Wt 
etiformis, sub Pl. 1 } 
iedae oy stem eng ina Stith biiatlas "flowers yellow without spots. . 
Jlavum, sub Pl. 1 
Genus 6.—Hoodia, Sweet. 
I. Corolla glabrous inside. 
a. Corolla distinctly cup-shaped, 2-3 inches in diamete 
Lobes of outer T corona distinctly b bifid. H. Barklyt, sub te 1905. 
Lobes of outer corona emarginate. H. Bainii, sub Pl. 1 
ria Sg nearly flat, 31-4 inches in diameter. H. cenit sub Ph 
Il. pita pilose inside, 3-5 inches in diameter. H. Currori, sub Pl. eee 
