Buchnera.] xcn. scropholariaceje (hemsley and skan). 391 



,J lin. broad, laterally compressed. — Stellular ia inflata, De Wild. Etudes 

 JT1. Katanga, 124. 



South Central. Congo Free State : Katanga ; Manioue, on the Upper 

 Lualaba River, Briart. 



36. B. tuberosa, Skan. Plant tuberous-rooted, 6-15 in. high, 

 ■closely resembling B. Lastii and B. similis ; stems freely branched. 

 Leaves linear-lanceolate, up to \\ in. long and If lin. broad, acuminate, 

 glabrous, or minutely and sparingly ciliate. Spikes very slender, unin- 

 terrupted except sometimes the lowermost pair of flowers is shortly 

 separated from the rest, almost as in B. similis, but the bracts are more 

 closely adpressed ; bracts lanceolate, 3-4 lin. long, acuminate, ciliate ; 

 bracteoles linear, about 2 lin. long, ciliate. Calyx as in B. similis, but 

 3-4 lin. long. Corolla chocolate colour ; tube up to 7 lin. long (much 

 longer than the calyx), otherwise as in B. similis ; lobes oblong, about 

 1 lin. long and ^-| lin. broad, thick, involute along the margins in the 

 •dried state. Style 2f lin. long. Capsule narrowly oblong, 4-4J lin. 

 long. 



Mozamb. Dist. British Central Africa : Nyasaland ; Tucliila Plateau, Mount 

 Mlairji, 6000 ft., Purees, 21 ! 



37. B,usuiensis, Oliv. in Trans. Linn. Soc. xxix. 121, t. 122, Jig. 

 ■C. An erect herb 1^-2 ft. high, sparingly branched from the woody 

 base ; branches terete, leafy, rather densely covered with grey 

 pubescence ; internodes 4-6 lin. long. Leaves opposite or the upper 

 subopposite, sessile, lanceolate or the upper linear-lanceolate, f-lj in. 

 long, 2-3 lin. broad, acute, glabrous or with a few minute scabrid hairs 

 on the midrib and margins, 1-nervecl. Flowers in slender imbricate 

 spikes 3-6 in. long ; bracts linear-lanceolate or boat-shaped, § in. long ; 

 lh lin. broad, acuminate, sparingly pubescent, becoming rigid in fruit ; 

 bracteoles \ in. long, similar to the bracts but much narrower. Calyx 

 -\ in. long, sparingly pubescent; teeth subulate, lj-lf lin. long, the 

 upper tooth smaller, acute, ciliate. Corolla-tube 1\ lin. long, cylindric, 

 curved, narrow, minutely pubescent inside and outside, having numerous 

 .stiff hairs at the throat inside and a few on the lobes ; lobes obovate, 

 2\ lin. long, \\ lin. broad, slightly toothed. Anthers acute. Style 3^- 

 lin. long. Capsule oblong, about 3 lin. long, shortly beaked, bisulcate. 

 — Striga senegalensis, T. Thorns, in Speke, Nile, Append. 642, not of 

 Benth. 



Mozamb. Sist. German East Africa: Usui, 4500 ft., Speke Sf Grant, 20i! 



38. B. similis, Skan. Closely resembles B. Lastii in stems and 

 leaves, but in every example seen the stems are simple, and as many as 

 D arise from the common woody rootstock, Spikes terminal, up to 4 in. 

 long or more, rather loose but uninterrupted except that the 1 or 2 

 lowermost pairs of flowers are shortly separated from the rest ; 

 bracts lanceolate, acuminate, 4-54; lin. long, about 1 lin. broad, glabrous 

 except on the very sparingly ciliate margins, slightly keeled ; bracteoles 



