Schizoglossum. | LXXXV. ASCLEPIADEZ (BROWN). 365. 
puberulous lines ; internodes 14-3 lin. long. Leaves opposite or 3 in a 
whorl, sessile, spreading, 3-1? in. long, $—-+ lin. broad, linear, acute, 
narrowly revolute along the margins, glabrous. Umbels 4-6 to a 
branch, 5—7-flowered, pedunculate, lateral and terminal; peduncles 
4-9 lin. long, minutely puberulous down one side; bracts minute, 
subulate ; pedicels 1-14 lin. long, becoming 3-3} lin. long in fruit, 
minutely puberulous down one side. Sepals } lin. long, } lin. broad, 
oblong-ovate, acute, glabrous. Corolla about 2} lin. in diam., quite 
glabrous, greenish ; lobes somewhat spreading, 1 lin. long, 4 lin. broad, 
oblong, obtuse and minutely notched at the apex. Coronal-lobes arising 
close to the base of the staminal-column and as long as it, § lin. long, 
2 lin. broad, fleshy, erect or ascending, ovate, obtuse, convex on the 
back, flat, with 2 parallel keels on the face, but without a tooth or other 
process. Staminal-column } lin. long; anthers erect, subquadrate- 
oblong; their appendages ovate, acute, inflexed over the truncate apex 
of the style; anther-wings with straight margins, not at all projecting. 
—Hiern in Cat. Afr. Pl. Welw. i. 683. 
Lower Guinea. Angola: Huilla; in pastures thinly covered with bushes, 
near Lopollo, Welwitsch, 4173! 
This is much like Xysmalobium gramineum, S. Moore, in general appearance, 
but differs entirely in floral structure, see note under that species on p. 303. 
20. S. Welwitschii, V. HZ. Br. Tuber about 5 in. in diam., 
tapering downwards. Stems 6-10 in. high, slender, solitary, glabrous, 
leafy above, and with 3-4 distant pairs of rudimentary leaves below. 
Leaves spreading, 2-3 in. long, } lin. broad, linear, mucronate-acute, 
with revolute margins, glabrous. | Umbels lateral, 4—6-flowered, on 
glabrous peduncles 5-9 lin. long; pedicels 2-2} lin. long, glabrous ; 
bracts none or minute. Sepals 1-1} lin. long, lanceolate, acute, gla- 
brous. Corolla broadly campanulate, 5-lobed nearly to the base ; lobes 
} in. long, 14 lin. broad, oblong, obtuse, apiculate, concave, glabrous on 
both sides. ‘Corona arising at the base of the 1} lin. long staminal- 
column and not reaching to the base of the anthers, 2 lin. long, shortly 
annular at its base, divided into 5 transversely oblong truncate lobes, 
with the sides incurved at the apex, and with an oblong or tongue- 
shaped process on the inner face at the middle, slightly longer than the 
rest of the lobe. Anther-appendages small, ovate, acute, inflexed over 
the apex of the style.—Odontostelma Welwitschii, Rendle in Journ. 
Bot. 1894, 161, t. 344; Hiern in Cat. Afr. Pl. Welw. i. 683. 
Lower Guinea. Angola: Huilla; in pastures thinly covered with bushes 
near Lopollo, Welwitsch, 4172! 
I cannot retain this plant as a distinct genus ; the characters claimed for it by 
Dr. Rendle are, an imbricate estivation, and coronal-lobes connate at their base and 
shorter than the staminal-column. It is contrasted with Xysmalobium, but that 
genus has also an imbricate (rarely valvate) zstivation, and in some species (X. 
rhomboideum, X. membraniferum, &c.) the coronal-lobes are more or less connate at 
the base, and are shorter than the staminal-column in several species. In habit and 
estivation it agrees with species of Asclepias, Xysmalobium, and Schizoglossum. The 
