Pentarrhinum.| ASCLEPIADE& (Brown). 743 
dilated and obtuse at the apex, decurrent as a keel below ; anther- 
appendages suborbicular or oblong, very obtuse, inflexed upon the 
style-apex. Schlechter in Journ. Bot. 1896, 456. 
Eastern Recion: Natal, Gerrard and McKen. 
From the description it appears somewhat doubtful if this plant belongs to the 
genus Pentarrhinum. According to Dr. Schlechter, it is only known to him 
“from a small scrap collected by Gerrard and McKen in Natal,” but he does not 
state in what Herbarium it exists. A very full set of Gerrard and McKen’s 
plants, including some uniques, are at Kew, but neither there nor in Harvey’s 
Herbarium at Dublin, nor in the British Museum have I seen any specimen that 
will correspond with the description, and, according to Mr. Medley Wood, no 
specimen of it can be found in the Natal Herbarium. 
3. P. tylophoroides (K. Schum. in Engl. and Prantl, Pflanzenfam. 
iv. ii, 244) ; inflorescence paniculate ; leaves roundish. 
Soutu Arrica, Burchell (ex K. Schumann). 
The above is all the description given of this plant, which probably belongs to 
some other genus, but as no number is quoted, I cannot trace it among Burchell’s 
plants. 
XXII. CYNANCHUM, Linn. 
Calyx 5-partite. Corolla very deeply 5-lobed, rotate or rotate- 
campanulate ; lobes overlapping and straight, or more or less twisted 
in bud. Oorona arising from the staminal column, near or at its 
base, either annular, cup-shaped or tubular and entire, toothed or 
lobed at the top, or divided nearly or quite to the base into 5 entire 
or toothed lobes, with or without a tooth, lobe, thickening or keels 
within the tube in front of each of the principal teeth or lobes, or 
on the inner face or at the base of the lobes when the corona is 
divided. Staminal column arising at or near the base of the corolla, 
constricted under the anthers into a short or long stipe (filament 
part) within the corona, or the anthers nearly or quite sessile 
without a stipe, tipped with membranous or slightly fleshy 
appendages, inflexed or connivent over the apex of the style 
or erect around it. Pollen-masses pendulous, solitary in each 
anther-cell, affixed in pairs by short or long caudicles to the pollen- 
carriers. Style shorter or longer than the anther-appendages, 
truncate, conical or beaked at the apical part. follicles sometimes 
winged or keeled, smooth or setose. Seeds crowned with a tuft 
of hairs. 
Stem twining, erect or decumbent, leafy, rarely leafless and 
succulent ; leaves opposite ; flowers rather small, fasciculate or in 
pedunculate simple umbel-like or compound and corymbose cymes, 
rarely in racemes, subaxillary or lateral at the nodes. 
Distrts. Species more than 100, cosmopolitan. 
