302 LXXXV. ASCLEPIADEE (BROWN). | Xysmalobium. 
into a long stipes and beak.—Hiern in Cat. Afr. Pl. Welw. i. 682. 
Xysmalobium Holubii, Scott-Elliot in Journ. Bot. 1890, 365 partly (as 
to Welwitsch’s plant and description of corona); K. Schum. in Engl. 
Jahrb. xvii. 120 in a note. 
Lower Guinea. Angola: Huilla; hilly places near Lopollo, Welwitsch, 
4175! Mukenge, Pogge, 1108! and without precise locality, Pogge, 1109, 1140, 
Buchner, 607, and Mechow, 340 (ex Schumann). 
Closely resembling XY. Holubii and included under that species by Scott-Elliot. 
But the small coronal lobes are very much broader, of a different shape, and con- 
nected with each other by a small erect tooth, which is entirely wanting in X. 
Holubii ; the cartilaginous wings of the anthers are also one-third shorter than in 
that species. 
2. KR. Holubii, Scott-Elliot in Journ. Bot. 1890, 365 (excluding 
the Angola plant and description of corona). Stem 12-18 in. high, with 
two pubescent lines in the upper part, glabrous below. Leaves sessile 
or nearly so, 35-5 in. long, 1-14 lin. broad, linear, acute, glabrous. 
Umbels lateral and terminal, the lower pedunculate, the upper sessile or 
subsessile, hemispherical or subglobose, more than 20-flowered ; flowers 
small; peduncles 14-5 lin. long, pubescent or with hairy lines like the 
stem ; bracts 2 lin. long, attenuate, acute, subglabrous ; pedicels 3—4 lin. 
long, tapering from the base, puberulous. Sepals reflexed, 1 lin. long, 
lanceolate acute, concave, glabrous. Corolla closely reflexed; lobes 
2 lin. long, } lin. broad, oblong, acute, glabrous. Coronal-lobes minute, 
» lin. long, resembling a small tongue protruding from the hollow at the 
base of the anthers and directed downwards, narrowly oblong, obtuse, 
channelled down the face, adnate to the staminal-column, quite free from 
each other, with no alternating tooth between them. Staminal-column 
zo in. long ; anther-appendages ovate, subacute, inflexed over the apex 
of the style—K. Schum. in Engl. & Prantl, Pflanzenfam. iv. ii. 232. 
Mozamb. Dist. Rhodesia: Leshumo Valley, South of the River Zambesi, 
Holub ! 
The preceding species from Angola was confused with this in the original 
description, and the corona described from the Angolan plant instead of from 
Holub’s specimen ; however, it appears best to retain the name for the plant for 
which it was intended. This species and X. decipiens N. E. Br. are allied to the 
South African X. involucratum, Decne. 
3. K. gramineum, 8. Moore in Journ. Bot. 1902, 254. Plant 
5-6 in. high, branching. Branches about 3 lin. thick, with internodes 
4—6 lin. long, more or less pubescent. Leaves ascending-spreading, 
glabrous on both sides, 13-23 in. long, 2-13 lin. broad, linear, acute, 
cuneately narrowed at the base into a petiole 1-2 lin. long, revolute 
along the margins. Umbels few (3 on the specimen seen), la‘e alat the 
nodes, pedunculate, 8-12-flowered; peduncles 7-12 lin. long, slender, 
minutely pubescent with curved hairs along one side; bracts 1} In. 
long, subulate, minutely pubescent; pedicels 2-24 lin. long, slender, 
minutely pubescent. Sepals 1 lin. long, 4 lin. broad, lanceolate, acute, 
