Geniosporum. | _ LABIATZ3 (Brown). 293 
Vill. GENIOSPORUM, Wallich. 
Calyx campanulate, 4—5-toothed ; tube elongating and cylindric 
in fruit, with prominent transverse veins on the upper part ; teeth 
variable ; in the 4-toothed species, with the 3 upper teeth sub- 
equal and smaller than the lowest tooth, which is emarginate or 
minutely bifid at the apex and inflexed and closes the tube in fruit ; 
in the 5-toothed species, with the 3 upper larger than the other 
2 or the teeth all subequal; dorsal tooth scarcely decurrent on 
the tube. Corolla small, exserted, 2-lipped ; tube short ; upper lip 
shortly 4-lobed; lower lip boat-shaped. Stamens 4, directed 
towards the lower lip ; filaments all free, bearded, but neither toothed 
nor crested near the base; anthers versatile, reniform, 1-celled. 
Style filiform ; stigma bifid. Nutlets erect, oblong or ellipsoid. 
Perennial herbs ; leaves opposite ; inflorescence terminal, spike-like, with the 
whorls many-flowered, usually crowded ; flowers very small. 
Distris. A small genus of 16 or 17 species, some undescribed, natives of India, 
Madagascar, and Tropical Africa, one species extending into South Africa. 
1. G. angolense (Briq. in Engl. Jahrb. xix. 164); a perennial 
herb ; stems 2-3 ft. high, simple or branched, obtusely 4- (rarely 6-) 
angled, obscurely puberulous; leaves spreading ; petiole 2—5 lin. 
long ; blade 1-24 in. long, 4—1 in. broad, lanceolate, acute, tapering 
into the petiole at the base, serrate, subglabrous or with minute 
scattered pubescence on both sides ; inflorescence dense, spike-like, 
1}-5 in. long, of numerous many-tlowered crowded whorls, with 
l or 2 pairs of ovate acuminate parti-coloured leafy bracts at its 
base; pedicels about 1 lin. long, pubescent; calyx 1 lin. long, 
becoming 2 lin. long in fruit, campanulate, 4-toothed, pubescent 
outside, glabrous within ; teeth about 3 as long as the tube, 3 upper 
ovate, acute, lower one ovate-oblong, obtuse, emarginate, or shortly 
bidentate, inflexed and closing the mouth of the tube in the fruiting 
stage ; corolla small, unequally 5-lobed, pubescent outside and in 
the upper part within ; tube 14-14 lin. long, exceeding the calyx ; 
4 upper lobes subequal, $ lin. long, flat, ovate, subacute ; lower 
lobe about 14 lin. long, 4 lin. broad, boat-shaped, subacute and 
recurved at the apex; stamens much exserted; filaments free, 
bearded at the base, 2-24 lin. long; upper pair inserted just below 
the middle of the tube, lower pair inserted just below the base of 
the lower corolla-lobe ; nutlets } lin. long, ellipsoidal, slightly com- 
pressed, obtuse, glabrous. Baker in Dyer, Fl. Trop. Afr. v. 351. 
Kaanari Reaion : Transvaal ; in the district of Lydenburg, Roe in Herb. Bolus, 
2648! by the river near Lydenburg, Wilms, 1139! Houtbosch, Rehmann, 6173 ! 
marshy places in Umlomati Valley, near Barberton, 4000 ft., Galpin, 1317! 
Thorncroft, 7214! near Mbabane, 4600 ft., Bolus, 12248 ! 
Also in Angola. 
