260 xci. soLANACEiE (weight). [J\ r icotiana\ 



2. N. rustica, Linn. Sp. PL eel. 1, 180. A herb, up to 4 ft. high. 

 Stem terete, branched. Leaves ovate, obtuse, sometimes subcordate,. 

 glandular-pubescent, petiolate, the lower up to 1 ft. long. Flowers in 

 terminal subpaniculate racemes, bracteate or not. Calyx cyathiform,. 

 5-fid ; lobes very short, subequal. Corolla greenish-yellow, salver- 

 shaped, twice as long as the calyx-tube, villous ; lobes 5, obtuse. Fila- 

 ments villous at the base. Style slightly longer than the stamens. 

 Capsule subglobose, obtuse or emarginate, slightly longer than the- 

 calyx. — Lehm. Hist. Nicot. 34 ; Dunal in DC. Prodr. xiii. i. 563 ; Speke., 

 Nile, Append. 641 ; Oliver in Trans. Linn. Soc. xxix. 119 ; Schweinf. 

 Beitr. Fl. Aethiop. 276 ; Duthie, Field & Card. Crops, t. 17 ; Engl. PfL 

 Ost-Afr. C. 356 ; Zarb in Cat. Spec. Bot. Pfund, 31 ; Comes, Monogr. 

 Nicot. 20, fig. 2. 



Nile Land. Darfur : Bara, Pfund, 89 ! Kordofan, Kotschy, 25 ! by the- 

 Nile near Assur, Speke Sf Grant ! British East Africa : near Nairobi, Whyte ! 



Also in the Argentine. Probably only cultivated in Africa. 



11. SCHWENKIA, Linn. ; Benth. et Hook. f. Gen. PI. ii. 911. 



Calyx tubular or campanulate, 5-toothed. Corolla tubular, several? 

 times longer than the calyx ; lobes 5, clavate or very small, alternating 

 with entire or 2-lobed processes. Stamens didynamous or only 2, the 

 fifth rudimentary or obsolete, inserted in the corolla-tube, included or 

 exserted ; filaments filiform or compressed : anthers ovoid. Disc- 

 annular or cupular. Ovary 2-celled ; style filiform ; stigma terminal ;. 

 ovules numerous. Capsule 2-valved, globose or ovoid. Seeds many, 

 small, rugulose or almost muricate ; embryo straight. — Slender wiry- 

 herbs, rarely suffruticose. Leaves entire. Flowers in terminal 

 panicles. 



Species 20, South American. 



Two upper corolla-lobes much longer than the lower . 1. S. americana. 



Corolla-lobes equal . . . . - . . . 2. 8. Mria. 



1. S. americana, Linn. Gen. ed. 6, 567. A much-branched' 

 pubescent herb, about 2 ft. high. Leaves alternate, entire, the lower 

 ovate and petioled, the upper oblong and sessile, about f in. long, 

 i-i in. wide. Panicle lax ; pedicels very short ; bracts minute,, 

 subulate. Calyx cylindrical, slightly striate, ll lin. long; teeth tri- 

 angular, acute, much shorter than the tube. Corolla pale violet, three 

 times longer than the calyx ; tube slightly inflated ; mouth contracted ; 

 teeth clavate, two upper longer than the rest. Anthers oval. Style 

 filiform, glabrous, as long as the filaments, subclavate at the apex. 

 Capsule subglobose, obtuse, nearly twice as long as the calyx ; valves 

 entire, glabrous. Seeds irregularly angled, brownish. — Benth. in DC. 

 Prodr. x. 194, and in Hook. Niger Fl. 473; Schmidt in Mart. Fl. 

 Bras. viii. i. 251 ; Hiern in Cat. At'r. PI. Welw. i. 754, partly. 



Upper Guinea. Senegambia : near the Casamanca River, Leprieur ! Sierra 

 Leone, Welwitsch, 5923 ! Vogel, 89 ! Scott-Elliot, 3887 ! 4322 ! Gold Coast : Cape 

 Coast Castle, Vogel, 12 ! Accra, Brown, 308 ! Lagos, Milieu,, 100 ! Daivodu, 4 I. 

 Southern Nigeria : Stirling Island, Vogel, 153 ! 



