90 XC. CoNVOLVULACE^E (BAKE1? AND RENDLE). [Convolvulus.. 



1. C. sericophyllus, T. Anders, in Journ. Linn. Soc. v. Sujopl. L 

 25. A shrubby perennial, reaching 6 ft. in height, much branched 

 from the base ; branches strictly ascending, terete, woody, spinescent 

 at the tip, slightly silky when young, glabrate when mature. 

 Leaves silky, acicular, lower oblanceolate, shortly acute, to 1 in. 

 long, upper growing gradually smaller and passing into the bracts.. 

 Flowers 1-3, fascicled, forming terminal racemes. Peduncle up to- 

 9 lin. long, generally much shorter. Sepals cartilaginous, ovate- 

 acuminate, minutely silky, very small, barely more than 1 lin. long. 

 Corolla silky, 6-9 lim long. Capsule glabrous. Seeds black, opaque. — 

 Hallier f, in Engl. Jahrb. xviii. 97. 0. acicularis, Vatke in Linnsea, 

 xliii. 518.. 



Nile Xand. Somaliland : Coast plain, near Wodderi, Hildebrandt, 885 ! foot- 

 hills near Maid, Hildebrandt, 1516 ; valley below Bihen, Miss Cole ! 



Also at Aden. C. somalensis, Franch. Sert. Somal. 43, not of Vatke, is probably 

 identical. 



2. C. Hystrix, Vahl, Symb.i. 16. An erect shrub; branchlets 

 numerous, short, spreading, hairy, ending in sharp spines. Leaves- 

 small, stiff, sessile, 6 lin. long or less, rarely reaching 2 lin. broad, 

 oblong, tapering slightly towards the subobtuse apex, silky. Flowers 

 axillary, sessile, usually solitary. Calyx 3 lin. long, clothed with short 

 brown hairs ; 2 outer sepals larger, orbicular ; 3 inner ovate. Corolla 

 hairy on the midpetaline areas, little longer than the calyx, nearly 

 5 lin. long. Capsule not seen. — Choisy in DC. Prodr. ix. 400. Hal- 

 lier f. in Engl. Jahrb. xviii. 100, and in Ann. Istit. Bot. Roma, vih 

 22Q. 



Nile land. Nubia : Soturba Mountains, Schweinfurth, 2151 ! coastdand,. 

 Bent / Eritrea : Berber, Riva, 251 ; Obbia, Garad, Robeechi-Bricchetti, 497. 

 Also in Egypt, Arabia and Syria. 



3. C. Unspoilt, Hallier f. in Ann. Istit. Bot. Roma, vii. 225. A 

 densely spiny shrub ; branches terete, of the first order elongated, of 

 the higher orders gradually shorter, spreading at right angles and end- 

 ing in a leafless spine ; the younger adpressed and minutely puberulous. 

 Leaves not more than 6 lin. long and less than 1^ lin. broad, linear- 

 lanceolate from a subtruncate base, on the branches of the first and 

 second order and at the base of the branchlets, becoming gradually 

 smaller, glabrous above, with a few adpressed hairs beneath ; petiole 

 barely 1 lin. long. Flowers 1-5, at the very base of the branchlets of 

 the third order, small, peduncled, 1-1 1 lin. long, bearing above the 

 middle two minute opposite lanceolate bracts. Calyx ovoid, 2-|- lin.. 

 long ; sepals glumaceous, ovate-lanceolate, sparsely ciliolate at the apex,, 

 otherwise glabrous, the two outer recurved at the tip, the 3 inner a 

 little smaller. Corolla funnel-shaped, 4§ lin. long, 5-lobed, glabrous,, 

 with scattered glands between the nerves. Filaments glandular- 

 pubescent at the gradually dilated base ; anthers linear-sagittate, some- 

 what twisted. Disc minute, cupular, 5-crenate. Ovary ovoid, glabrous. 

 Capsule not seen. 



Nile land. Somaliland : near Milmih in the Ogaden desert, Riva, 297. 



