Buchnera.| XII. SCROPHULARIACEE (HEMSLEY AND SKAN), 391 
3 lin. broad, laterally compressed.—Stellularia inflata, De Wild. Etudes 
Fl. 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 14 in. long and 1} 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 
¢losely 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 
Jonger than the calyx), otherwise as in B. similis; lobes oblong, about 
I lin. long and 4-2 lin. broad, thick, involute along the margins in the 
ane State. Style 2} lin. long. Capsule narrowly oblong, 4—4} lin. 
ong. 
Mozamb. Dist. British Central Africa: Nyasaland ; Tuchila Plateau, Mount 
Mlanji, 6000 ft., Purves, 21! 
37. B, usuiensis, Oliv. in Trans. Linn. Soc. xxix. 121, t. 122, fig. 
C. An erect herb 14-2 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, j-1} in. 
long, 2-3 lin. broad, acute, glabrous or with a few minute scabrid hairs 
on the midrib and margins, I-nerved. Flowers in slender imbricate 
Spikes 3-6 in. long; bracts linear-lanceolate or boat-shaped, 3 in. long; 
1} lin. broad, acuminate, sparingly pubescent, becoming rigid in fruit ; 
bracteoles } in. long, similar to the bracts but much narrower. Calyx 
3 in. long, sparingly pubescent; teeth subulate, 13-1} lin, long, the 
upper tooth smaller, acute, ciliate. Corolla-tube 7} 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, 
24 lin. long, 1} lin. broad, slightly toothed. Anthers acute. Style 34 
lin. long. Capsule oblong, about 3 lin. long, shortly beaked, bisulcate. 
—Striga senegalensis, T. Thoms. in Speke, Nile, Append. 642, not of 
Benth. 
Mozamb. Dist. German East Africa: Usui, 4500 ft., Speke § Grant, 204! 
38. B. similis, Sian. Closely resembles B. Lastii in stems and 
leaves, but in every example seen the stems are simple, and as many as 
9 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—5j lin. long, about 1 lin. broad, glabrous 
except on the very sparingly ciliate margins, slightly keeled ; bracteoles 
