Byschoriste.] xcviii. acanthace.e (clarke). 79 



IVile ILand. Abyssinia, Kotschy. 



Not seen. Said to be allied to D. adscendens, a species likewise unknown to late 

 writers. 



26. D. subquadrangulariSy G. B. Clarke. Stem 3 ft. high, 

 subquadrangular. Leaves f by ^ in., ovate, narrowed at either end, 

 pubescent ; petiole —^ in. long, hairy. Inflorescences axillary, cymose, 

 congested, hairy ; bracteoles linear, minute. Flowers blue. Calyx 

 J in. long, divided half-way down, hairy, glandular. Corolla-tube J in. 

 long; lobes J in. long. Style hairy. Capsule nearly J in. long, 

 4-seeded. — Hygrophila suhquadrangularis, Lindau in Engl. Jahrb. 

 xxiv. 314. 



XMCozamb. 2>lst. German East Africa : Usambara ; 1600 ft., Buchioald, 94. 



Said to be most nearly allied to Hygrophila Volkensii, Lindau (a Dyschoriste) ; 

 and, having only 4 seeds to the capsule, is probably a Dyschoriste, 



Chaetacantlius, Nees. This genus differs from Dyschoriste by having two stamens 

 only ; and is South African ; no example from Tropical Africa having been seen. In 

 Engl. Pfl. Ost-Afr. C. 367, Lindau places in Tropical East Africa two species — viz., 

 C. setiger (Stuhlmann, 13 17) and C. Burchellii (Hoist, 8917), both of which prove to 

 have 4 stamens and to be Dyschoriste radicans, Nees. There would appear to exist 

 further ground for Chcetacanthiis occurring in Tropical Africa from Lindau I.e., but 

 none was found at Berlin. 



22. DISPERMA, C. B. Clarke. 



Calyx small, tubular half its length, or 3 posticous segments nearly 

 free ; segments 5, equal, narrow-oblong, or 2 anticous connate nearly to 

 the top. Corolla small, |— J in. long ; tube narrowly funnel-shaped from 

 the base or subcylindric ; lobes 5, subequal, ovate, contorted in bud. 

 Stamens 4, subsimilar ; anther-cells linear-oblong, parallel, rounded at 

 the base ; pollen short-ellipsoid, ribbed. Ovary with 1 (sometimes 2) 

 ovule in each cell ; style with 2 linear-oblong (often unequal) branches. 

 Capsule small, 2-seeded, obovoid-ellipsoid, much flattened, woody, brown, 

 shining ; seeds discoid, with many hygroscopic hairs on the margin. — 

 Small or medium-sized shrubs, more or less hairy. Leaves entire, 

 crenate, or toothed. Clusters of flowers axillary ; bract oblong, about 

 as long as the calyx ; bracteoles similar, smaller. 

 Species, the 7 following, endemic in Tropical Africa. 



The character which holds these 7 species closely together is the flattened 

 ellipsoid capsule, v/hich is quite different from the capsule of Dyschoriste, when 

 by accident 2 seeds only are perfected. There is one ovule in each cell with frequently 

 a lower imperfect one added ; as in species of Barleria. The genus Lamiacanthtis, 

 O. Kuntze founded on a Javan plant, may prove hereafter to include Disperma, but its 

 capsule is unknown. 



Erect ; corolla | in. long. 



Calyx subequally 5-fid about ^-way down . , 1. D. A- il inlands- 



charicum. 

 Calyx 2-anticous segments connate ^ their length, 

 3 posticous segments free. 



