1024 ASCLEPIADE (Brown). [ Piaranthus. 
upwards or outwards and then inwards, acute or irregularly 
2~-3-toothed at the apex, with a thick convex or truncate dorsal 
crest at their base, minutely tuberculate all over its top. 
Cenrrat Recton: Laingsburg Div.; near Matjesfontein, Pillans, 130! three 
miles south-west of Laingsburg, Pillans, 672! Prince Albert Div. ; near 
Grootfontein, Pillans. : 
ll. P. grivanus (N. E. Br. in Hook. Ic. Pl. t. 1924, A); 
branches 14-2 in. high, forking in all directions ; branchlets 
scarcely angular but rather composed of aggregated tubercles, with 
a white spine at the end of the teeth” (Barkly) ; according to 
Miss Barkly’s drawing the stems are 4-angled, with 3-4 conical 
finely pointed teeth 2-3 lin. long along each angle ; flowers solitary 
(always?) in the grooves between the angles below the middle of the 
stems; pedicels not seen, “very short ” (Barkly) ; sepals 24 to 
nearly 3 lin. long, 1 lin. broad at the base, ovate, acuminate, with 
recurved tips, glabrous ; corolla “ somewhat campanulate, a full inch 
from point to point, interior deep purple, almost black, with rough 
strie across ; exterior nearly as green as the calyx, streaked with 
dark perpendicular stripes” (Barkly) ; in the only dried flower seen 
it is about 3 in. in diam., with a short and apparently broadly cam- 
panulate or cup-shaped tube, and deltoid-acute lobes 3-35 lin. long 
and 23-3 lin. broad at the base, glabrous on both sides and not 
ciliate ; corona-lobes about 2 lin. long, 1-1} lin. broad, ovate (not 
quite as figured), acuminate, closely incumbent upon the backs of the 
anthers and exceeding them, dorsally produced at the base into a 
short transverse crest, which is apparently flattened on the top and 
slightly crenate on the subtruncate hind margin, “ reddish-brown C 
(Barkly). K. Schum. in Engl. und Prantl, Pflanzenfam. iv. ii. 277. 
Caralluma grivana, Schlechter in Journ. Bot. 1898, 479. 
Katanart Recion: Griqualand West ; Griva, Arnot, 6 (Barkly, 11)! 
I have only seen one flower of this rather remarkable species, the rest of the 
description being compiled from the figure and description sent to Kew by Sir 
Henry Barkly in 1876, the plant not having been refound since then. Possibly 
when better known it may have to be removed from this genus. 
LIM, DUVALIA, Haw. 
Calyx 5-partite. Corolla rotate, deeply 5-lobed, with the disk 
raised into a cushion-like ring (annulus) around and supporting 
the outer corona and its margin reflexed ; lobes narrowly linear- 
lanceolate to ovate, folded longitudinally backwards (replicate) into 
vertical plates or the basal half more or less expanded. Corona 
double, arising near the top of the staminal column, stipitate ; 
outer corona flat, entire, more or less pentagonal rarely 10-angled, — 
resting on the rim of or on the sides of the cup formed by the 
