•394 xcii. scrophulariace^e (hemsley and skan). [Buchnera. 



43. B. leptostachya, Benth. in DC. Proclr. x. 497. A somewhat 

 slender erect herb 1-2|- ft. high, usually branched in the upper part, 

 glabrescent or very sparingly sprinkled with minute hairs, often scabrid 

 with minute white points on the leaves ; stems and branches terete, 

 with long internocles. Lower leaves elliptic, oblong or obovate, up to 

 3 in. long and lj in. broad, obtuse; upper leaves from linear-oblong to 

 linear, 1-lf in. long, l|-4 lin. broad, obtuse or acute. Flowers in 

 loose interrupted terminal spikes often from 6-9 in. long, very shortly 

 pedicellate ; bracts ovate-lanceolate, ovate or ovate-elliptic, 1 J- 2\ lin. 

 long, acute or acuminate, concave, shortly hairy or glabrous except on 

 the ciliate margin ; bracteoles linear to linear-lanceolate, f-2 lin. long, 

 acute, otherwise as the bracts. Calyx 2£-4i lin. long, 10-ribbed or 

 -nerved, 5-toothed, nearly glabrous except for a few hairs on the teeth ; 

 teeth narrowly deltoid to linear-triangular, l-ll lin. long, acute. 

 Corolla dull blue purple or white ; tube 2|-4 lin. long, glabrous or with 

 a few short hairs near the throat outside, pilose inside, straight, 

 eylindric; lobes obovate, §-H lin. long, 1-1 lin. broad. Anthers 

 acute. Style f-l^ lin. long. Capsule narrowly oblong, 2f— 3J lin. long, 

 minutely apiculate. — Vatke in Oest. Bot. Zeitschr. 1875, 11. B. mossam- 

 iicensis, Klotzsch in Peters, Reise Mossamb. Bot. 224, t. 34 ; Vatke in 

 Linmea, xliii. 309. B. mossambiceusis, var. usafuensis, Engl, in Engl. 

 Jahrb. xxx. 404. 



Upper Guinea. Senegambia, Leprieur, 7 ! 613 ! Gambia, 'Brown-Lester, 

 42 ! French Guinea : Wallia, Scott-Elliot, 4266 ! Northern Nigeria : Nupe, 

 Barter, 907 ! 



Nile land. British East Africa : Ribe to Galla Country, Wakefield ! 



Mozamb. Bist. Zanzibar : Hokotoni, Hildebrandt, 1127 ! German East 

 Africa : Dar-es- Salaam, Hildebrandt, 1221 ! Usafua ; Songwe Valley, 3600 ft., 

 Goetze, 1053. Portuguese East Africa : Kerimka Islands, Peters. British Central 

 Africa : Nyasaland ; Fort Hill, Tanganyika Plateau, 3500-4000 ft., Whyte ! 



44. B. speciosa, Skan. An erect branched rather rigid under- 

 shrub, perhaps the largest-flowered species of the genus, drying black ; 

 stem up to 4 ft. high, terete, often glaucous, sparingly pubescent in 

 places and densely bifariously pubescent in others or glabrescent, scabrid 

 here and there with the much-thickened bases of small hairs; branches 

 erect-spreading, slender, opposite or subopposite, glaucous, quite gla- 

 brous or sparingly covered with short fine hairs thickened at the base. 

 Leaves opposite or subopposite, distant, lanceolate or oblanceolate, up to 

 If in. long and Ah lin. broad, narrowed to the base, very slightly narrowed 

 at the apex, minutely apiculate, entire, covered with stiff adpressed 

 hairs on both sides, often with a tuft of smaller leaves in their axils. 

 Spikes or racemes interrupted, terminal, up to 9 in. long ; flowers mostly 

 in pairs |— | in. apart, shortly pedicellate ; bracts ovate-lanceolate, about 

 3 lin. long, 1 lin. broad at the base, shortly acuminate, thinly covered 

 with short stiff hairs on the upper side, sparingly ciliate ; bracteoles 

 linear-lanceolate, 2-24^ lin. long. Calyx b\ lin. long, 1^ lin. broad above, 

 slightly narrower below, somewhat curved, glabrous outside, covered 

 with short stiff adpressed hairs on the upper part inside, 10-ribbed ; 



