18 CXLII. XYRIDEZ (BROWN). [ Xyris. 
16. X. huillensis, Rendle in Cat. Afr. Pl. Welw. ii. 71. Densely 
tufted. Leaves #-2} in. long, 4-3 lin. broad, linear, acute; sheaths 
with membranous margins. Peduncular-sheath about as long as the 
leaves, acute or with a short leafy point. Peduncle 3-12 in. long, 
1_1 lin. thick, filiform, slightly angular, reddish below. Spike about 
2 lin. long, 14-2 lin. thick, ellipsoid, becoming subglobose in fruit, 
about 6-flowered. Bracts 14—1 lin. long, 2—1 lin. broad, elliptic-oblong, 
very obtuse, subcoriaceous, rather stoutly keeled in the upper half, 
entire, 3-nerved (sometimes incompletely), light brown, slightly shining. 
Lateral sepals 14-13 lin. long, }—} lin. broad, broadly lanceolate, acute, 
light brown along the keel, membranous and nearly colourless on the 
sides; keel narrow, quite entire. Corolla-lobes 14 lin. long, ? lin. 
broad, obovate, yellow. Arms of the staminodes densely pilose, bright 
yellow. Anthers subsagittate. Ovary compressed-ellipsoid, becoming 
obovoid and shortly rostrate as it ripens. Seeds ellipsoid, narrowing 
to a slight umbo at each end, crimson, with dark longitudinal lines. 
Lower Guinea. Angola: Huilla; Empalanca, in lofty sandy pastures, 
flooded in the rainy season, Welwitsch, 2469! marshes near the River Quipumpun- 
hime, in the Humpata district between Nene and Humpata, Welwitsch, 2472! 
17. &. anisophylla, Welw. ex Rendle in Cat. Afr. Pl. Welw. ii. 72. 
Leaves 2—34 in. long, 3—? lin. broad, linear, acute. Peduncular-sheath 
14-2 in. long, acute. Peduncle 5-8} in. long, 4-4 lin. thick, “of a 
shining copper or almost gold colour” (Welwitsch). Spike 2 lin. long, 
14-2} lin. broad, ellipsoid, somewhat truncate at the apex, often 
becoming hemispherical when mature, 5-flowered. Bracts 14-1} lin. 
long, 14-14 lin. broad, orbicular-obovate to broadly elliptic, very obtuse, 
sometimes faintly keeled in the upper part, entire, membranous, 
3-nerved, very light reddish-brown, with broad transparent straw- 
coloured margins. Lateral sepals 1}—1# in. long, scarcely } lin. broad, 
somewhat oblong-lanceolate, acute or subacute, membranous, nearly 
colourless, very light brownish or straw-coloured along the back; keel 
very narrow, quite entire. Petals (torn) more than 1} lin. long, 
scarcely 1 lin. broad, yellow. Staminodes 2-armed, with dense tufts of 
yellow hairs, more than half the length of the stamens. Anthers ? lin. 
long, oblong, cordate at the base. Fruit scarcely 1} lin. long, plano- 
convex, narrowly obovoid, very shortly beaked. Seeds ellipsoid, with 
an apical umbo, longitudinally marked with distinct spiral ridges, red. 
Lower Guinea. Angola: Pungo Andongo; in spongy places in the Presi- 
dium, near the huge rocks of the Barrancos de Catete, Welwitsch, 2463. 
18, K. fugaciflora, Rendle in Cat. Afr. Pl. Welw. ii.71. Czspi- 
tose. Leaves 3-4 in. long, 3-3 lin. broad, linear, acute, transversely 
rugulose ; scabridulous at the margin, especially when old. Peduncular- 
sheath 3-2 in. long, with a leafy point 14-3 lin. long. Peduncle 3-9 in. 
long, —} lin. broad, very slender, flattened, glabrous. Spike 13-2} lin. 
long, | to nearly 2 lin. thick, 4—5-flowered, ellipsoid when ia flower, 
becoming semi-ellipsoid in fruit. Bracts 14-2 lin. long, 3-14 lin. 
broad, varying from elliptic to orbicular, very obtuse, membranous, 
