LXXX. ASCLEPIADEiE. 233 



10. KREBSIA, Harv., not E. and Z. 



Calyx 5-partecl. Corolla bell-shaped, 5-parted ; segments 

 very concave below, with reflexed, velvety, opaque apices. 

 Corona 5-leaved ; folioles from a broad base, lanceolate-acumi- 

 nate, erect, fiat within, dorsally keeled, with inflexed apices. 

 Anthers with larf^e membranous tips, applied to sides of stig- 

 ma. Stigma projecting, barrel-shaped, bluntly 5 -angled, con- 

 cave at summit. Follicles ? 



A branching undershrub, 6-12 inches high. Leaves naiTOW-Hnear, long, 

 with revolute margins, glabrous. Peduncles interpetiolar, very short or 

 obsolete ; flowers umbellate, yellow-green, of mediocre size. This has 

 nearly the corolla of Cordylogyne, but a very different corona and stigma. 

 — Sent by Mrs. P. W. Barber and Mr. H. Bowker from Kreili's country 

 (No. 293), and by Mr. G-errard from Buffalo River, Natal (n. 1309). The 

 generic name is in honour of Herr Ivrebs, a meritorious collector of South 

 African plants. 



11. MACKENIA, Harv. 



Calyx 5-parted. Corolla rotate, 5-parted, the lobes oblong, 

 flat, spreading. Corona 5-leaved, the lobes subulate, acute, 

 erect, longer than the gynostege, keeled, with a longitudinal, 

 medial furrow on the face, the margins at base and that 

 of the sinus reflexed. Anthers membrane-tipped. 8tigma 

 pentagonal, flattish, with a 5-nippled umbo in the centre. 

 Follicles inflated, solitary, covered with long, slender, plumose, 

 soft shreds. 



Erect, hairy herbs, with the aspect of Schizoglossum atropurpureum and 

 S. virens. — 2 species, one sent by Mi's. F. W. Barber and Mr. Bowker from 

 Kreili's country, and by Dr. Sutherland from Natal : and both found at 

 the Dargle farm by Mr. Fnnnin (n. 36 and 48). Named in honour of 

 Mr. J. M'Ken, Esq., Curator of the Botanic Gardens, Natal, a very zealous 

 and successful collector of the plants of the Natal colony. 



12. PERIGLOSSUM, Dene. 



Calyx 5-parted ; sepals lanceolate. Corolla deeply 5-fid, 

 the segments erect, oblong, conniving. Corona 5-leaved ; fo- 

 lioles cordate or oblong, flat, narrowed at base, obtuse, thick- 

 ened in the middle, equalling the gynostege, bearing on the 

 inner face a fleshy, adnate prominence. Anthers membrane- 

 tipped. PoUinia compressed, linear or taper-pointed, pendu- 

 lous. Stigma depressed, 5-augled. — DC. Prod. viii. j^. 520 • 

 Thcs. Cap. t. 111. 



Erect, simple or branched herbs, with long, narrow-linear leaves, with 

 revolute margins and terminal or inlerpelioiar peduncles, bearing dense 

 heads of greenish flowers. — 3 species, from Caffruiia or Natal. 



