154. XCVIII, ACANTHACEE (CLARKE). [ Barleria. 
in. in diam,; sterile bracts } in. long, altogether spinous pinnatifid; 
outer fertile bracts up to 1 by 3 in., ovate, acute, with many innocuous 
teeth. Calyx 2 in. long; posticous segment obovate-oblong, shaggy. 
Corolla dark blue, more than 1 in. long. 
Wile Land. Eritrea: Keren, Steudner, 1508! 
30. B. mucronifolia, Lindau in Ann. Istit. Bot. Roma vi. [1896] 
71. Branch woody, hairy. Leaves } by } in., triangular at either end, 
hairy on both surfaces, tip with a hard spine ;!/; in. long. Spikes 1} by 
1} in., unilateral; sterile bracts 1 in. long, reduced to pinnatifid spines; 
empty bracts to spike 1 in. long, lanceolate, spinous. Posticous sepal 
1 by 4-4 in., ovate, acute, spinescent, hairy. Corolla purple-blue, tube 
1# in. long inflated near the top. 
Nile Land. Somaliland: Gonene, Riva, 1098! 
31. B. homoiotricha, C’. B. Clarke. Canescent with many short 
incurved white simple hairs. Leaves 3 by 4 in., obovate-elliptic, tip 
obtuse with a mucro, base narrowed; petiole 0-1 in. long. Sterue 
bracts up to 4 in. long, reduced to compound pinnatifid rigid spies; 
raceme many-flowered, unilateral, dense; fertile bracts % in. long; 
elliptic-lanceolate, few-toothed. Posticous sepal 3 by } in., acute, 
margin spine-toothed ; anticous calyx-segment hardly } in. long, ovate, 
obtuse, entire or nearly so. Corolla-tube 1} in. long, funnel-shaped at 
the top. Filaments with scattered short white hairs nearly to the top: 
Ovary glabrous; ovules 2, subsimilar in each cell; style glabrous, wit 
a very few microscopic hairs near the base. 
Nile Land. Somaliland, Miss Edith Cole! Gillet & Aylmer! 
This is allied to B. mucronifolia, Lindau, but has short uncurved grey (instead of 
villous) hairs, and smaller flowers. 
32. B. elegans, S. Moore in Journ. Bot. 1880, 269, excluding sy” 
Hairs simple or obscurely clustered. Branches 2 ft. long. Leaves UP 
to 33 by 14 in., quite entire, narrowed into a petiole 0-4 in. long: 
Racemes unilateral, 1-1} in. long, 2-8-flowered ; fertile bracts 4 by $ 
in., spine-toothed. Posticous sepal 3 in. long, elliptic, acute, spre 
toothed. Corolla blue-mauve; tube 3-2 in. long, narrowly funnel- 
shaped; lobes } in. long. Capsule } in. long, 4-seeded.—B. pungen®s 
var. macrophylla, Nees in DC. Prod. xi. 237, not of Linn. 
Lower Guinea. Loango, Soyauvr, 26! Angola, Welwitsch, 5034! 5068! 
5114! 5122! 5187! Ambriz, Monteiro! Huilla; Humpata, Johnston ! 
Also in South Africa. 
In this plant the cystoliths are sometimes conspicuous in the leaves, sometimes 
altogether obscure. It is not easy to understand how Nees supposed it could bet 
var. of the Cape B. pungens, Linn., which has small toothed leaves with a differen 
indumentum, and bears no superficial resemblance to B. elegans. 
33. B. carruthersiana, S. Moore in Journ. Bot. 1880, 270. 
Strigose ; internodes 34 in. long, or only 14 in. long. Leaves up t© 
