Solenostemma. | LXXXV. ASCLEPIADEE (BROWN). 403 
spreading, white, glabrous or with a few scattered hairs on the back. 
Corona 4 as long as the corolla-lobes, submembranous, cup-shaped, 
obtusely 5-lobed to half-way down, and infolded at the sinuses between 
the lobes, which are deeply concave-hooded, from their margins being 
inflexed so as to meet or nearly so. Staminal-column 2~24 lin. long, 
clavate, the part formed by the filaments very slender, as long as the 
anthers and exceeding the corona. Follicles solitary (always ?), 2 in. 
long, 74-9 lin. thick, ovoid-lanceolate, acuminate. Seeds turgid, ovoid, 
channelled down one face, minutely tuberculate, crowned with white 
hairs.—Decne. in DC. Prod. viii. 533; Schweinf. Pl. Nilot. 29; K. 
Schum. in Engl. & Prantl, Pflanzenfam. iv. ii. 223, fig. 65, S-T. 
Cynanchum Argel, Delile in Mém. Egypte, iii. 319; and Fl. Egypte, 
197 (Reprint, 53), t. 20, fig. 2. Cynanchum olewfolium, Nectoux, Voy. 
Egypte, 20, t. 3. Argelia Delilit, Decne. in Ann. Sc. Nat. 2 sér. ix. 331, 
t. 11, fig. G. 
Nile Land. Nubia: Wady Arab, between Suakin and Berber, Schweinfurth, 
670! along the Nile between Wady Halfa and New Dongola, Bromfield ! Kordofan, 
Pfund, 218! 
Also in Egypt and Arabia. 
32, TYLOPHOROPSIS, N. E. Br. in Gard. Chron. 1894, xvi. 245. 
Calyx 5-lobed almost to the base. Corolla deeply 5-lobed, rotate or 
rotate-campanulate; lobes overlapping to the left in bud. Corona of 
> fieshy tubercles adnate to the lower half of the staminal-column, 
alternating with the corolla-lobes, usually having 5 very minute teeth 
alternating with them (and with the anthers) at the base of the 
column, representing a rudimentary outer corona. Staminal-column 
arising just above the base of the corolla; anthers erect, short and 
broad, obtuse, with an inflexed membranous appendage at their apex. 
Pollen-masses pendulous, solitary in each anther-cell, attached in pairs 
to the pollen-carriers by horizontal caudicles. Style not produced 
beyond the anther-tips. Follicles smooth; seeds crowned with a tuft 
of hairs.—Perennials with twining stems, opposite leaves, and the 
peduncles lateral between the bases of the petioles, bearing two or 
more sessile umbel-like cymes racemosely scattered along them, flowers 
small. 
Species 2, one a native of Arabia. This genus resembles Zylophora in every- 
thing except that the pollen-masses are distinctly pendulous and have much stouter 
and very different caudicles. 
1. T. heterophylla, V. #. Br. in Gard. Chron. 1894, xvi. 245. 
Stems more or less twining, slender, pubescent, apparently not attain- 
ing a greater height than 2-3 ft. Leaves spreading; petiole 1 lin. 
to 1} in. long; blade 4-24 in. long, 4-14 lin. broad, ovate or oblong- 
ovate, obtuse, subacute or acuminate, subtruncate to slightly cordate 
at the base, glabrous above, sparsely covered with spreading hairs on 
the veins beneath, and ciliate on the more or less recurved margins; 
