384 XCII, SCROPHULARIACEE (HEMSLEY AND SKAN). [ Buchnera. 
lin. long, pubescent, prominently 10-nerved ; teeth 3-3 lin. long, subu- 
late-lanceolate, slightly concave. Corolla violet-blue; tube cylindric, 
straight, 3 lin. long, sparingly pilose outside, rather densely pilose at 
the throat inside ; lobes oblong-obovate to obovate, 1}—-14 lin. long, 3 
lin. broad. Anthers acuminate. Style ¢ lin. long. Capsule oblong- 
ovoid, 3 lin. long, scarcely beaked, bi8ulcate,—B. Welwitschii, Engl., 
forma parviflora, Engl. & Gilg in Baum, Kunene-Samb. Exped. 367, 
Lower Guinea. Angola: Amboella; by the River Longa below Chijija, 
3900 ft., Baum, 621! above Napalanka, Baum, 573a. 
17. B. rungwensis, /ngl. in Engl. Jahrb. xxx. 403. An annual 
herb with a strong taproot and a short rootstock emitting 2 or 3 erect 
densely pilose stems 6—8 in. long. Basal leaves linear-oblong, 10-12 
lin. long, about 24-34 lin. broad, obtuse, cuneate towards the base, 
1-nerved ; cauline leaves few (only 2 or 3 pairs in the type), linear- 
lanceolate to linear, 5-7} lin. long, ?-1 lin. broad, acute, sparsely pilose. 
Spikes 3-1} in. long, somewhat lax-flowered ; bracts imbricate, lanceo- 
late, about 5 lin. long and 1 lin. broad, rather densely pilose. Calyx 3 
lin. long, rather densely pilose; teeth narrowly triangular, abont } lin. 
long. Corolla bright violet; tube 5-6 lin. long, } lin. broad, very 
slightly curved ; lobes obovate, 34 lin. long, 24 lin. broad, the upper 
somewhat smaller than the others. 
Mozamb. Dist. (German East Africa: Rungwe Mountains, on the slopes of 
the highest summit, 9500 ft., Goetze, 1153 ! 
18. B. strictissima, Lngl. ¢: Gilg in Baum, Kunene-Samb. Exped. 
367. A very slender annual herb 1}—13 ft. high, erect ; stem straight, 
simple or sometimes sparingly branched, glabrous except for a few 
scattered minute stiff hairs ; internodes }-} in. long at the base up to 
1} in. long in the upper part of the stem. Leaves opposite, linear, 
4-7 lin. long, $—1 lin. broad, the upper smaller, obtuse or acute, fleshy, 
usually with a few minute stiff hairs chiefly along the midrib and 
margins. Flowers in cylindric crowded terminal spikes about 14 in. 
long, which sometimes have short weak branches at the base; bracts 
ovate, broadly ovate or suborbicular, 1 lin. long and nearly 1 lin. broad, 
fleshy, apiculate, slightly pulverulent, more or less white-margined at 
the apex ; bracteoles oblong-lanceolate, 2 lin. long, rather acute. Calyx 
1-1} lin, long, minutely puberulous, fleshy ; teeth 1-4 lin. long, semi- 
ovate, rounded at the apex, minutely and hispidly ciliate, the upper 
tooth much smaller. Corolla rose-coloured; tube narrow, cylindric, 
incurved, 3} lin. long, glabrous outside, shortly pubescent inside; lobes 
obovate, 1-1} lin. long and nearly 1 lin. broad, entire, bifid or denticu- 
late. Anthers acute. Style 3 lin. long. Capsule ellipsoid-globose, 
14-1} lin. long, bisulcate, slightly emarginate. 
ri omaaten Guinea. Angola: Amboella; Kampuluve River, 3900 ft., Baum, 
19. B. ensifolia, Engl. in Engl. Jahrb. xxiii, 511. An annual 
herb branched from the base; stem 6-12 in. high, shortly grey -pilose ; 
