Bucknera.] xcn. scrophulakiace.e (hemsley and skan). 393 



|— 1 lin. long, acute. Corolla bright scarlet or orange-red ; tube about 

 5 lin. long, very narrow, cylindric, curved near the top, ribbed, nearly 

 glabrous outside, pilose inside chiefly at the throat ; lobes obovate or 

 the upper obovate-rhomboid, 3-5 lin. long, lf-3j lin. broad, slightly 

 and irregularly toothed, very sparingly ciliate below. Anthers acute. 

 Style 1 lin. long. Capsule oblong, about 3 lin. long. 



Mozamb Dist. German East Africa : Uhehe; near Tengulingi, Goetze, 

 697 ! Lower plateau, north of Lake Nyasa, Thomson ! 



This plant yields a green colouring matter when macerated in water. 



41. B. Baumii, Engl, db Gilg in Baum, Kunene-Samb. Exited. 367. 

 An erect annual herb 1-lf ft. high, sparingly and minutely pubescent 

 (often bifariously on the stem and branches); stem teiete, sparingly 

 branched, and with very short leafy branches in the axils of the leaves ; 

 longer branches erect-spreading. Lower leaves rosulate, obovate, 

 lanceolate or oblanceolate, f-lf in. long, 3-4|- lin. broad, obtuse, 

 cuneate at the base, minutely and sparingly pubescent and ciliate, 

 thickened scabrid and revolute on the margins; upper leaves linear, 

 mostly narrowly linear or filiform, f- 14; in. long, ^—| lin. broad, obtuse, 

 minutely pubescent, somewhat scabrid. Spikes termiual, dense at the 

 apex, often interrupted below and elongating after flowering ; bracts 

 ovate to ovate-lanceolate, 1-lf lin. long, ■£-§ lin. broad, acute or 

 acuminate, sparingly and shortly ciliate, nearly glabrous on the back, 

 somewhat keeled ; bracteoles linear-lanceolate, f-4 lin. long. Calyx 2^—3^ 

 lin. long, shortly and sparingly pilose, 10-nerved ; teeth narrowly 

 deltoid to subulate, J— § lin. long, the uppermost tooth minute. Corolla 

 bluish ; tube 4-4| lin. long, very narrow, cylindric, straight, pilose 

 outside, densely pilose at the throat inside ; lobes obovate, lf-24 lin. 

 long, 1-1 h lin. broad. Anthers acuminate. Style i lin. long. 



Lower Guinea. Angola: Amboella; between Kassinga and the Kiver Ku- 

 bango, 4600 ft., Baum, 225 ! 



42. B. humpatensis, Hiern in Cat. Afr. PI. Welw. i. 777. A 

 slender erect branched annual herb 9-12 in. high, glabrous except some 

 small callous scales chiefly on the leaves ; stem angular, usually bright 

 purple-red ; branches opposite or the upper alternate, ascending. 

 Leaves opposite or the upper alternate, lanceolate or linear-lanceolate, 

 up to 1^ in. long and \ in. broad, acute, slightly narrowed at the base, 

 1 -nerved, sprinkled over and bordered with callous points. Flowers 

 subsessile, usually opposite (the pairs about 4 in. apart), in terminal 

 spikes 2-<6 in. long; bracts broadly ovate or ovate-elliptic, 1J-3 lin. 

 long, concave, minutely 2- or 3-toothed at the apex, glabrous or nearly 

 so; bracteoles 0. Calyx 14-2 lin. long, slightly puberulous ; tube 

 campanulate-oblong ; teeth about J lin. long, ovate, acute. Corolla- 

 tube nearly cylindric, scarcely curved, green, 14, lin. long, glabrous ; 

 lobes 5, somewhat unequal, narrowly obovate, about 4 lin. long. 

 Anthers obtuse. Style scarcely more than J lin. long. Capsule If- 2 

 lin. long, ellipsoid, bisulcate, slightly emarginate. 



lower Guinea. Angola: Huilla ; in the damp pastures of Humpata and 

 Xene. Wehcitsch, 5798 ! 



