/pOllltBCt.] XC. CONVOLVULACEiE (BAKER AND RENDLE). 191 



short straight leafy branches, the upper part of the shoots and the 

 nerves on the young leaves beneath bearing white pubescence. Leaves 

 -cordate-ovate, obtuse, mucronulate, base shallowly cordate, about 3 in. 

 long by 2 -J- in. broad, glabrous, the older leaves slightly bullate ; petiole 

 slender, a little shorter than the blade, with a large gland on each 

 aide at the back of the leaf-insertion. Peduncles axillary, standing 

 raceme-like in the axils of the upper leaves of the short shoots, 

 1 -flowered, about h in. long, becoming 1 in. or more in fruit; 

 pedicels slightly longer, thickening slightly upwards. Calyx glabrous, 

 tubular ; sepals elliptic-oblong, obtuse or emarginate, 7-8 lin. long, 

 coriaceous, dark brown, the edges thinner and lighter in colour, becoming 

 more than 1 in. long in the fruit. Corolla showy, salver-shaped, white, 

 glabrous, 3^—4 in. long • tube cylindric, 2^ in. long, about \ in. in 

 diam. Ovary 4-celled. Capsule large, about f in. long, sub- 

 quadrangular-ovoid, glabrous, dark brown, 4-valved, 4-seeded ; valves 

 tough and rather woody, a pale shining straw-colour on the inside. 

 Seeds clothed with a long white somewhat silky indumentum, and 

 including the tomentum nearly as long as the capsule. — Hallier f. 

 in Engl. Jahrb. xviii. 151 and xxviii. 51 ; Dammer in Engl. Pfl. Ost- 

 Afr. C. 333. 



Nile Land, British East Africa : Mtoui River, Kassner, 629 ! Ukamba ; 

 Kitui, midebrandt, 2760. 



IVXozamb. Dist. German East Africa: near the Victoria Nyanza, between 

 Alwanza Gulf and Emin Pasha Gulf, Trotha, 112. 



132. I. longituba, Hallier f. in Sitzungsber. Akacl. Wiss. Wien. 

 •cvii. 49. A robust shrub. Stems thick, woody, the younger minutely 

 but densely grey tomentose, the older ^ in. thick, terete, glabrescent, 

 yellowish, shining, rough when dry. Leaves orbicular, retuse, with 

 truncate or subcordate base, 3 in. long, nearly as broad, covered on both 

 surfaces when young with dense grey tomentum, intimately glabrescent 

 above, with sparse arachnoid tomentum beneath ; petiole up to 2^ in. 

 long, 1 lin. thick, tomentose when young like the leaves, with on 

 each side at the base of the lamina a long inconspicuous nectary. 

 Flowers forming a dense many-flowered spike, with small young leaves 

 at the end of the shorter shoots from which the older leaves have fallen. 

 Peduncles up to h in. long, terete, thick, grey-tomentose, 1 -flowered ; 

 subtending leaves petioied, oblong, 1^ in. long, glabrous above, white 

 on the margin, covered Avith white tomentum beneath especially on the 

 nerves, beset with dense capitate glands and strongly bullate. Pedicel 

 subclavate, 3-5 lin. long, like the sepals, glabrous or sparsely pulverulent, 

 bearing a pair of opposite minute elongate triangular subobtuse bracts. 

 Sepals 6-7 lin. long, about ^ in. broad, elongate-elliptic, obtuse or 

 emarginate, coriaceous, yellowish-green, with paler membranous margin, 

 the two outer shorter. Corolla salver-shaped, white ; tube slender, 

 ■cylindrical, 3^-4 in. long, 2-2| lin. in diam., expanding above into a 

 broad subrotate 5-lobed limb, about 3 in. in diam. ; midpetaline areas 

 plainly limited, yellowish. Stamens and style included, about equal to 

 the tube ; anthers linear, ^ in. long. Capsule large, ovoid, nearly 1 in. 

 long, beaked with the persistent style-base, glabrous, shiny, dark 



