78 ACANTHACE (Clarke). [ Rhinacauthus, 
at the base; pollen ellipsoid, with 3 longitudinal smooth bands. 
Ovary hairy. Capsule oblong, 4-seeded at the top, with a linear 
cylindric stalk; placenta not rising elastically from the base of the 
valves; seeds covered with tubercles. 
Rambling. Flowers in ses-ile distant clusters on the branches of the panicle; 
bracts and bracteoles small linear. 
Species 3 or 4, in Africa and India. 
This genus differs from Siphonoglossa in the inflorescence and in the pubescent 
ovary. 
1. R. communis (Nees in Wall. Pl. As. Rar. iii. 109) ; sparingly 
pubescent; leaves 2-5 in. long, ovate to lanceolate ; petivles 0-1 in. 
long ; flowers in small clusters on the beanches of loose divaricating 
panicles ; bracts {-} in. long, linear ; calyx 1-1 in. long; corolla- 
tube $ by ;;-y; in., linear to the top; lip + in. lung, posticous 
linear-oblong ; capsule 1 in. long, pubescent, finally glabrate, linear- 
cylindric stalk more than } in. long; seeds 4, covered with tubercles. 
Nees in DC. Prod. xi. 442; T. Anders, in Journ. Linn. Soe. vii. 51; 
Lindau in Engl. Jahrb. xviii. 63, t. 2, fig.68; C. B. Clarke in 
Hook. f. Fl. Brit. Ind, iv. 541, and in Dyer, Fl. Trop. Afr. vi. 224. 
. macilentus, Presl, Bot. Bemerk. 95. R. oblongus, Nees in DC. 
Prod. xi. 444; T. Anders.in Journ. Linn. Soc. vii.51. R. nasutus, 
Lindau in Engl. § Prantl, Pflanzenfam. iv. 3B, 339, and in Engl. 
Pf. Ost-Afr. C. 371. Justicia macilenta, E. Meyer in Drége, Zwei 
Pflanzengeogr. Documente, 159,196. Peristrophe oblonya, Nees in 
Linnea, xv. 875. Pseuderanthemum dichotomum, Lindau in Engl. 
Jahrb. xx. 40, and in Engl. Pfl. Ost-Ajr. C. 371. 
Eastern Reaion: Pondoland, Bachmann, 1270! Natal; in thickets by the 
Upper Umlazi River, below 500 ft., Drége! Inanda,, Wood, 146! 534! Coust- 
land up to 1000 ft., Sutherland! und without precise locality, Sanderson ! 
Gerrard, 391! 
An abundant plant in Tropical Africa and India, 
XXV. ECBOLIUM, Kurz. 
Calyx small, deeply 5-fid; segments linear. Corolla-tube eylin- 
dric ; lips 2, not elongated. Stamens 2; anther-cells 2, oblong, 
muticous, at equal height; pollen globuse, with longitudinal bands. 
Ovary with 2 ovules in each cell. 
Shrubs ; leaves entire, rather thick; spikes strobilate, terminal; bracts large, 
enclosing the calyx; bracteoles small, linear ; capsule (where known) with 2 flit 
rough seeds. 
Species 8-12, natives of Africa, Madagascar, Arabia and India, 
1, E. Flanagani (C. B. Clarke) ; a yellowish-green shrub, nearly 
glabrate, the young parts hairy; leaves 11 by 3 in., ovate, subobtuse, 
base broad-triangular; petioles }—3 in. long; spikes terminal, 11 by 
§ in., strobilate; bracts % by % in.; calyx scarcely i in. long ; 
segments linear, pubescent ; corolla-tube 1-2 by 1, in., subcylindric ; 
lobes } in. long ; anther-cells oblong, muticous, at equal height ; 
