Dintera. | XCII. SCROPHULARIACE& (HEMSLEY AND SKAN). 301 
long. Leaves broadly ovate, semiamplexicaul, acute, recurved at the 
apex, thickened on the margins, 5-nerved, the larger 3 lin. long and 2 
lin. broad. Calyx in the flowering stage scarcely }? lin. long, 1-1} lin. 
long when in fruit; segments 3 times longer than the tube, 1-nerved. 
Corolla 4-1} lin. long; upper lip somewhat longer than the lower ; 
lobes all minute. Outer anther-cells almost twice as large as the inner, 
obovoid, subacute or obtuse at the base. Capsule up to 1} lin. long. 
Lower Guinea. German South-west Africa: Hereroland; Waterberg 
Plateau, in water, Dinter, 568. 
31. HYDRANTHELIUM, H. B. & K.; Benth. et Hook. f. Gen. 
Fi. the 20d. 
Calyx 4--5-partite ; segments oblong or elliptic or the lateral lanceo- 
late. Corolla shortly infundibuliform-campanulate, 3—5-fid ; lobes con- 
cave or cucullate, imbricate, unequal. Stamens 3 to 4, sometimes 2 or 
5, affixed to the throat of the corolla, exserted ; filaments short ; anthers 
rather large, 2-celled;. cells parallel. Style dilated at the apex, very 
slightly 2-lobed. Ovules many. Capsule ovoid or ellipsoid; valves 
entire. Seeds many, oblong, incurved, pendulous, striate, carunculate 
at the hilum.—Slender hairy or glabrous creeping or prostrate herbs 
growing in marshy places and on wet rocks. Leaves opposite, sessile, 
3—7-nerved, entire or crenate at the apex. Flowers small, white, 
pedunculate in the axils of the leaves, ebracteolate. 
Species 2 or 3, also in Guatemala, Western Tropical South America. 
1. H. egense, Poepp. d& Endl. Nov. Gen. Sp. iii. 75, t. 287. A 
slender pulverulent or more or less pilose herb; stems up to about 6 in. 
long, simple or sparingly branched, creeping and rooting at the nodes. 
Leaves ovate or suborbicular, 4-8 lin. long, 2-5 lin. broad, rounded at 
the apex, cuneate or sometimes broad at the base, 3—7-nerved, gland- 
dotted, entire or slightly crenate at the apex. Peduncles 3-7 lin. long. 
Calyx 1} lin. long, 4- or 5-partite ; segments unequal, oblong to linear- 
oblong, obtuse. Corolla 24 lin. long, unequally 3~5-lobed, fragrant 
(Barter). Stamens 8 or 4, rarely 2 or 5. Capsule globose-ellipsoid, 
1-1} lin. long, obtuse.—Benth. in DC. Prodr. x. 425.  Herpestis 
Monnieria, Durand & Schinz, Etudes Fl. Congo, i. 209 (excl. synonymy), 
not of H. B. & K. 
Upper Guinea. Southern Nigeria: Onitsa, overrunning the muddy margins 
of Streams, Barter, 1252! 
South Central. Congo Free State: Congo; at the mouth of the Kasai River, 
Hens, 119! 
Also in Guatemala and Western Tropical South America. 
