Buchnera.] xcn. scROPHULARiACEiE (hemsley and skan). 



377 



Plant l-2i ft. high ; bracteoles 



present ; calyx 2^-4^ lin. long. 



All the leaves lanceolate; bracts 



3-5 lin. long, distinctly 



opposite .... 



Lower leaves oblong ; bracts 1-j— 



2j lin. long, subopposite or 



alternate . . . . 



Corolla-tube 8 lin. long ; lobes 5 lin. 



long and broad .... 



ff Spikes distinctly hairy. 



X Corolla-limb 5-7 lin. in diam. 



Leaves linear or linear-lanceolate, 

 usually 1 in. long or more. 

 Corolla-tube curved, gradually 



widened towards the apex 



Corolla-tube straight, cylindric. 



Plant not or very sparingly 



branched, l£-lf ft. high . 



Plant much branched, dwarf or 



rarely more than 1 ft. high . 



Leaves oblong-spathulate, 3-^-5 lin. 



long 



XX Corolla-limb 3-4 lin. in diam. 



Plant rather slender, up to If ft. high, 

 sparingly branched ; spikes 

 usually under 6 in. long : flowers 

 not very numerous 

 Plant robust up to 2i ft. high, much 

 branched ; spikes up to 1 ft. long 

 or more ; flowers very numerous . 

 f * Flowers axillary, solitary ; stems prosl rate 



39. B. Lastii. 



43. 



44. 



46. 



47, 



-is. 



B. leptoslachya. 

 B. speciosa. 



45. B. Jongespicata. 



B. pallescens. 

 B. Senriqiiesii. 

 B. multicaulis. 



49. 



B. hispid a. 



50. 



B. longifolia 



51. 



B. prorepens 



1. B. lippioides, Vatke in Engl. Jahrb. xviii. 68, in key, t. 3, figs. 

 O, P. An erect pubescent hispid annual herb, 1^-3 ft. high ; stem 

 simple or branched at the apex, If— 2J lin. thick at the base, leafy ; 

 internodes |— 2£ in. long. Leaves opposite, narrowly oblong, the lower 

 2 in. long, 4|— 7§- lin. broad, decreasing in size on the upper part of the 

 stem, obtuse, 3-nerved, somewhat narrowed at the base. Flowers in 

 terminal and axillary quadrangular spikes, f-1^ in. long ; bracts ovate 

 to ovate-orbicular, 8|— 4 lin. long, 3 lin. broad, acute, pilose on the 

 under side, concave, ciliate ; bracteoles similar but much narrower. 

 Calyx cylindric, 4-4J lin. long, pilose on the nerves ; teeth semi-ovate, 

 |— | lin. long, rather thickened, mucronate. Corolla dark blue ; tube 

 5-5^ lin. long, very slightly curved, somewhat wider at the top, very 

 sparingly and minutely glandular-pubescent outside, shortly pilose 

 inside ; lobes suborbicular-obovate, 2J- 3 lin. in diam. — Engl. & Gilg 

 in Baum, Kunene-Samb. Exped. 368. B. trinervia, Engl, in Engl. 

 Jahrb. xxiii. 512 ; Hiern in Cat. Afr. PI. Welw. i. 777. 



Lower Guinea. Angola : Pungo Andongo, Welicitsch, 5883 ! between 

 Luxillo and Cazella, Welwitsch, 5885 ! Near Manonge on the Kuebe River 

 4400 ft., Baum, 849 ! 



