Caralluma. | LXXXV. ASCLEPIADEZ (BROWN). ase 
22. C. subulata, Deene. (an Arabian species), is quoted by K. 
Schumann in Ann. Istit. Bot. Roma, vii. 43, as having been collected in 
Somaliland, at Milmil, on hill sides near the river, Riva 3, and in 
Ogaden district, Riva 44, but I doubt the correctness of the identifi- 
cation. 
50. TRICHOCAULON, N. E, Br. in Journ, Linn. Soe. xvii. 164. 
Calyx 5-partite. Corolla rotate or with a very short tube, 5-lobed 
to half-way down; lobes valvate in bud. Corona double, arising from 
the staminal-column ; outer corona of 5 deeply bifid or bipartite lobes, 
with subulate divergent-arcuate segments, or somewhat cup-shaped, 
with 5 short emarginate or shortly bifid lobes; inner coronal-lobes 
linear, incumbent on the backs of the anthers, with or without a dorsal 
tooth-like process at their base, which is adnate to the outer corona. 
Staminal-column arising from the bottom of the corolla, short ; anthers 
suberect, linear-oblong, not appendaged. Pollen-masses ascending, 
solitary in each anther-cell, pellucid along the inner margin, attached 
in pairs to the pollen-carriers by very short caudicles. Style not 
exceeding the anthers, truncate at the apex.—Succulent perennials of 
dwarf habit. Stems simple or branched at the base, leafless, thick, 
fleshy, many-angled ; angles formed of crowded tubercles, which are 
terminated by a spine or rarely very blunt and pointless. Flowers 
rather small, arising from the angles between the tubercles towards the 
summits of the stems, subsolitary, pedicellate. 
Species 6, four of them natives of South Africa. 
Pedicels 1 lin. long ; corolla-lobes deltoid-ovate «1. T. officinale. 
Pedicels 2-23 lin. long; corolla-lobes lanceolate or 
ovate-lanceolate .. : : 5 : . 2. T. pedicellatum. 
1. T. officinale, V. H. Br. in Kew Bulletin, 1895, 264, Stems 
thick and fleshy, probably about 1} in. in diam., with many tuberculate 
angles; tubercles terminated by a subulate spine. Flowers arising 
from the grooves between the angles, subsolitary, or perhaps one flower 
following another; pedicels 1 lin. long, glabrous. Sepals about 14 lin. 
long, lanceolate, acuminate, glabrous. Corolla rotate-campanulate, 
about 5 lin. in diam., flat, without a tube; lobes 2-2} lin. long, 2 lin. 
broad, deltoid-ovate, rather abruptly acuminate into a fine point, more 
or less spreading, dark purple-brown, glabrous outside, minutely papil- 
late within, many (all?) of the papille terminated by a minute hair. 
Outer coronal-lobes about } lin. long and # lin. broad, arising close to 
the base of the staminal-column, forming small emarginate pouches 
alternating with the anthers, glabrous; inner coronal-lobes linear- 
oblong, obtuse, shorter than the anthers on which they are incumbent, 
dorsally adnate to the outer corona, glabrous. 
Mozamb. Dist. Bechuanaland: without precise locality ! 
I include this among the Tropical African species, although it is uncertain if it 
comes from the tropical or extratropical part of Bechuanaland. All I know 
