Ruellia.] ACANTHACEH (Clarke). 15 
This is close to R. ovata, Thunb., differing in the narrow leaves and the soft 
(scarcely scabrous) indumentum. 
Imperfectly known Species. 
8. R. aristata (Thunb. Prodr. 104, and Fl, Cap. ed. Schult. 479) ; 
a much branched shrub, seareely 1 ft. high; branches tetragonous, 
minutely pubescent; leaves 3 in. long, obovate, obtuse, entire, 
glabrous, petioled; flowers axillary, verticillate; bracts similar to 
the leaves, villous-scabrous; ealyx-segments subulate, aristate, 
scabrous. 
CeNTRAL RuGion: Karoo, Thunberg! 
This is reduced by Nees to his Chetacanthus.Persoonii, none of the specimens 
of which had more than 2 stamens. Schultes says of this that the ‘‘ stamens were 
approximated in pairs.” ... S 
IV. RUELLIOPSIS, C. B. Clarke. 
Bracteoles 2, linear, shorter than the calyx. Calyx deeply 
divided ; segments 5, linear, unequal. Corolla 1-1} in. long, not 
2-lipped ; tube funnel-shaped for 2 its length; segments 5, sub- 
equal, round, contorted in the bud. Stamens 4, subsimilar ; anther- 
cells 2, oblong, at equal height, spurred at the base; pollen nearly 
globose, many-ribbed. Ovary with 4 ovules in each cell; style 
hairy, with 1 linear and 1 suppressed stigmatic branch. Capsule 
cylindric, 8-seeded from the base. Seeds hygroscopically hairy on 
the margin. 
Small shrubs ; leaves linear, entire; flowers solitary axillary. 
Species 1; with another plant from the Tropical Kalahari imperfectly known 
and doubtfully referred here. 
1. R. setosa (C. B. Clarke in Dyer, Fl. Trop. Afr. v. 59); root 
woody; branches 15 in. long, trailing, hispid ; leaves 2 by } in., 
obtuse, hispid with scattered long white hairs; calyx 3-{ in. long; © 
corolla 14 in. long, bright or pale blue ; tube more than 4 in. long ; 
capsule 3-1 in. long, glabrate ; seeds 8, silky, white. Calophanes 
setosus, Nees in DC. Prod. xi. 112; T. Anders. in. Journ. Linn, Soc. 
vii. 24. 
Coast Reaion : Grahamstown ; collector not indicated ! 
KatAHart REGION: Transvaal; Boschveld, at Klippan, Rehimann, 5250! 
Vaal River, Nelson, 177! Pienaars River, 4300 ft., Schlechter, 4222! Bechuana- 
land; Batlapin Territory, Holub ! Mafeking, Bolus, 6411! 
Also in the Tropical Kalahari. 
V. DYSCHORISTE, Nees. 
Bracteoles 2, linear or narrow-oblong, much shorter than the calyx. 
Calyx segments 5, acute, subequal, often aristate. Corolla 4-1} in. 
long, more or less 2-lipped ; tube inflated upwards or rarely linear to 
the top ; segments 5, contorted in the bud. Stamens 4, subsimilar ; 
anther-cells 2, oblong, at equal height, usually spurred at the base; 
pollen ellipsoid or subglobose, with several longitudinal ribs. Ovary 
