Parasia | LXXXV. GENTIANEX. 707 
free in the ripe capsule ; edges of ths carpels inflected and somewhat 
cohering with the septum; seeds quadrangular-prismatic, very deli- 
cately papillose. In sandy moist places among low herbs, between 
Lombe and Quibinda, in company with Fimbristylis exilis R. & &., 
sparingly ; fl. and fr. middle of March 1857. No, 1512. In similar 
places at the river Cuanza, near Muta Lucala; fl. and young fr. 
March 1857. No. 15120. 
By some mistake this plant bears the Welwitsch no. 1524 in Herb. 
Kew, and is so quoted by Baker, J.c. 
2. P. grandis. 
Belmontia grandis EK. Mey. Comm. Pl. Afr. Austr. p. 183 (1837). 
Exochenium grande Griseb. in DC. Prodr. ix. p. 55 (1845); Welw. 
in Trans. Linn. Soe. xxvii. p. 49 (1869). . 
Houitia.—An annual herb, 3 to 11, usually 3 to 5 in. high ; rhizome 
parasitical, after the manner of Striga, adhering to the roots of 
neighbouring plants by means of its short whitish fleshy very brittle 
fasciculate fibres, chiefly affecting bulbous or tuberous Cyperacez ; 
stem erect, acutely tetragonal, bright green, filled with a very loose 
pith, rather sparingly branched towards the apex; leaves lanceolate- 
elliptical, semi-amplexicaul, herbaceous-green, obtusely keeled ; flowers 
horizontally nodding, almost like Mimulus; calyx 5-cleft, the lobes 
binged-keeled ; corolla hypogynous, somewhat salver-shaped, very 
wright sulphur in colour, sub-bilabiate, marcescent ; the tube but little 
exceeding the calyx; the lobes of the limb 5, ovate, very patent; 
stamens 5, inserted on the lower part of the corolla-tube, included, 
equal ; filaments flattened at the insertion of the anthers, incurved- 
thickened, longer than the anther-cells ; anthers oblong-linear, 2-celled, 
dehiscing longitudinally, with one gland at the apex and two glands 
at the base, at first exceeding the stigma, at length adhering to the 
enlarged stigma, forming a ring round the neck of the stigma and quasi- 
epigynous by the rupture of the filaments; the apical gland stalked, 
ellipsoidal-spathulate, central ; the basal glands smaller, suborbicular, 
shortly stalked, lateral ; ovary obovoid-elliptical, 2-celled, the edges of 
the valves introflected, the cells many-ovuled ; style central, falling 
short of the anther-tips or longer, firm, shorter than the thickly club- 
shaped, rather compressed pubescent stigma which is broadly winged 
on both sides; capsule ovoid, turgid, 2-celled; placenta at length 
4-parted, tolerably large, spongy, at length free from the capsule ; 
seeds very numerous, minute, cinnamon-brown or tawny, subglobose, 
angular, minutely scrobiculate or foveolate. Parasitical in spongy 
and marshy densely herbaceous places on clumps of Cyperacez, in 
company with species of Drosera, Lobelia, Striga, Scleria, Xyris, 
Eriocaulon, etc., near Lopollo ; in the Monino meadows by the stream ; 
fl. and fr. Dec. 1859 and Jan. 1860. No. 1516. In elevated spongy 
places, on the roots of various Rubiacez, in the Monino pastures; fl. and 
fr. Feb. 1860. A broad-leaved form. No. 15160. 
3. P. primulifiora. 
Exochenium primuleflorum Welw., l.c., p. 47. Belmontia pri- 
muleflora Schinz in Vierteljahrsschrift Nat. Gesellsch. Ziirich, 
Xxxvi. p. 332 (1891). 
HvILia.—An annual, little herb, 2 to 3 in, high, branched from the 
base ; branches and branchlets subcorymbose ; radical leaves elliptica) ; 
stem-leaves linear-lanceolate ; calyx but little winged, keeled-angular ; 
corolla deep-yellow ; the lobes of the limb 5 or rarely 4, broadly 
