166 xc. goxvolvulace^e (bakek and eendle). [Ipomcea. 



71. I. ochracea, G. Don, Gen. Syst. iv. 270. Perennial. Stems 

 very slender, twining, younger parts sparsely hairy to subglabrous, the 

 older longitudinally rugose-striate. Leaves cordate-ovate, acute, entire, 

 membranous, glabrescent or obscurely pubescent, 1-2| in. long ; petiole 

 a little shorter than the blade. Peduncles 1-3-flowered, i— 2 in. long ; 

 bracts minute, ovate, acuminate ; pedicels shorter than the peduncle, 

 4-9 lin. long. Calyx sparsely hairy, glabrous, 8 lin. long ; sepals ovate, 

 acute. Corolla funnel-shaped, 1| in. long, bright yellow with a purple 

 tube. Capsule subglobose, tipped with the persistent style-base, 

 glabrous. Seeds pubescent. — Choisy in DC. Prodr. ix. 372 ; Hallier f. 

 in Engl. Jahrb. xviii. 140 and xxviii. 37, in Bull. Herb. Boiss. vi. 540, 

 and in Bull. Soc. Bot. Belg. xxxvii. 95 ; Hiern in Cat. Air. PI. Welw. 

 i. 787 (as to No. 6245) ; Rendle in Journ. Bot. 1901, 55. /. ophthal- 

 mantha, Hallier f. in Engl. Jahrb. xviii. 141 as to Welw. ISTo. 6245. 

 Convolvulus ochraceus, Lindl. in Bot. Reg. t. 1060. 0. trichocalyx, 

 Schumach. in K. Dansk. Vid. Selsk. Afhandl. hi. Ill, and in Schumacb. 

 & Thonn. Beskr. Guin. PI. 91. 



Upper Guinea. Guinea: Inert, Thonning. Togo: near Lome, WarnecJce, 

 207! 



Lower Guinea. Congo: Smith! Lower Congo: Boma, Dupids, Dewevre> 

 128 ! Loango, Soyaux, 66. Angola : Ambriz, Monteiro ! Loanda, Welivitsch, 

 6245 ! Gossioeiler, 295 ! 1483 ! Chella Mountains, Johnston ! Petiedo, Gossioeiler, 

 1537! 



72. I. micrantha, Hallier f. in Bull. Herb. Boiss. vi. 541. A 

 climbing herb with slender terete thinly pilose or glabrescent stems. 

 Leaves cordate, entire, glabrous, up to 2| in. long by 2 in. broad, with 

 an acuminate mucronulate apex, basal sinus broad ; lobes rounded ; 

 petiole nearly as long as the blade, filiform. Peduncles axillary, terete, 

 filiform, glabrous, strictly erecto-patent, sometimes longer (up to nearly 

 2 in.) and many-flowered, sometimes shorter and few-flowered or obsolete. 

 Bracts and bracteoles minute squamiform, glabrous. Pedicels about 

 6 lin. long, filiform, glabrous, thickening somewhat upwards, strongly 

 recurved after flowering. Buds ovoid, subobtuse. Sepals small, sub- 

 equal or the two outer a little shorter, about 1^ lin. long, ovate-elliptic, 

 obtuse, mucronulate, herbaceous, glabrous, minutely rugose, subverrucu- 

 lose on the back, margin membranous and paler. Corolla funnel-shaped, 

 whitish-yellow, glabrous, about 1 in. long ; tube about 2 J lin. broad in 

 the middle ; limb nearly 1 in.incliam. Capsule globose, tipped with the 

 style-base, glabrous, 2-celled, about 4 lin. long. Seeds 4, dark-coloured 

 glabrous. — /. micrantha, var. glabrata, Hallier f. I.e. 542. 



Upper Guinea. Ashanti : Kumassi, Cummins, 236 ! Cameroons : Yaunde, 

 Zenker, 506. 



Var. hispida, Hallier f. I.e. 542. Bracteoles and calyces hispid with fine grey 

 spreading hairs. — Hallier f. in Bull. Soc. Bot. Belg. xxxvii. 96. 



Lower Guinea. Lower Congo : Lemba, JDeioevre, 357 ; Bingila, Dvpuis ; 

 Kisantu, Qillet, 899. 



73. I. acanthocarpa, Hochst. in Kotschy, PL Nub. Exsicc. 269. 

 Perennial. Stems slender, twining, glabrous, longitudinally striate. 

 Leaves cordate-ovate, entire, acute, membranous, glabrous, 1^-3 in. 



