7pomoea.~\ xc. convolvulace.e (baker and hendle). 137 



Bongo : Gir, Schweinfurth, 2531 ! Moru : Neangara, Petherick ! Uganda, Wilson, 

 120 ! Semliki ; Ruwenzori, Scott-Elliot, 8080 ! 



Lower Guinea. Island of St. Thomas, Don ! Lower Congo, Burton ! Smith I 

 Dewevre, 897, Sens, A278 ! Angola : Golungo Alto ; Pereira stream, Welwitsch, 

 6144 ! Queta Mountains, Welwitsch, 6231 ! Canaulo, on the Ainbaca road, Wel- 

 witsch, 6232 ! River Delamboa, Welwitsch, 6196 ! 6233 ! 



South Central. Congo Free State : Upoto, Wilworth. Mtowa, Bescamps. 



IWozamb. Dist. Zanzibar, Krause. German East Africa: north of Lake 

 Nyasa, Thomson ! Portuguese East Africa : near Lake Nyasa, Johnson, 396 ! 

 Zambesi Delta ; Vicente, Scott ! Zambesi, Webb ! British Central Africa : 

 Boruma, Menyharth, ]083 ! Nyasaland; Shire Highlands, Buchanan, 424! 

 between Kondowe and Karonga, Whyte, 378 ! 



Also in Madagascar and through Tropical Asia to North Australia. 



3. I. leucanthemum, Hallier f. in Engl. Jahrb. xviii. 124. A 



much- branched undershrub ; branches prostrate or ascending, half- 

 climbing, slender, grey-pubescent. Leaves linear-oblong, 1-2 in. long, 

 green and thinly hairy on both sides, cuneate or rounded or 

 shortly cordate at the base, obtuse, minutely mucronate ; petiole very 

 short. Flowers solitary in the axils of the leaves on very short hairy 

 pedicels. Calyx hairy, 3 lin. long; sepals unequal, ovate- or oblong- 

 lanceolate. Corolla funnel-shaped, white, very hairy outside, scarcely 

 longer than the calyx. Stigma with two oblong lobes. Fruit and 

 seeds not seen. — Dammer in Engl. Pfl. Ost-Afr. C. 331. Calycanthe- 

 mum leucanthemum, Klotzsch in Peters, Ileise Mossamb. Bot. 244, 

 t. 40. 



Mozamb. Dist. Portuguese East Africa: Rio de Sena, Peters; Lower 

 Zambesi; near Tete, Kirk ! 



We have no authenticated specimens of Ivlotszch's species. The sepals in the 

 plant collected by Kirk are much less acute than represented in Klotszch's figure, 

 but the plant agrees in other respects. 



4. I. sulphurea, Ilochst. ex Choisy in DC . Prodr. ix. 356. Annual. 

 Stems slender, trailing, pubescent. Leaves entire, bluntly elliptic- 

 ovate, obtuse, 1-2 in. long, usually shallowly cordate, slightly hairy on 

 both surfaces ; petiole 3-6 lin. long. Flowers few or many in the 

 axils of the leaves on short pedicels; peduncle almost suppressed. 

 Bracts small, ovate, about 1 lin. long. Calyx hairy, 3-4 lin. long; 

 sepals ovate, blunt, the two inner rather narrower, lower half pale- 

 coloured, upper half green and leaf -like, finally scariose. Corolla not 

 exceeding the calyx, sulphur-yellow ; filaments slightly unequal; anthers 

 cordate. Capsule globose, hairy, 3 lin. in diam. Seeds pubescent. — 

 Hallier f. in Engl. Jahrb. xviii. 124. /. vagans, Baker in Kew 

 Bulletin, 1894, 70. 



Upper Guinea. Senegambia, Perrottet ! Leprieur ! Gcinea, Isert ! 

 Nile land. Kordofan ; near Obeid, Kotschy, 273 ! Pfund, 47 ! 59 ! Abu 

 Harasa, Pfund, 148 ! 



5. I. cynanchifolia, C.B. Clarke in Hook. f. Fl.Brit. Ind. iv. 208 

 partly. Apparently annual. Stem climbing, slender, laxly hispidulose, 



