18 XCVIU, ACANTHACE® (BURKILL). [ Thunbergia. 
clad with weak hairs on both surfaces, 2 in. long, 1 in. broad. Flowers 
on very short pubescent peduncles; bracteoles lanceolate, acute, covered 
with white hairs, at flowering nearly 1} in. long. Calyx-teeth many, 
long, narrow, united into a very short tube at the base. Corolla-tube 
very narrow, 24-3 in. long, widening very slightly upwards to the 
throat, where it is less than } in. in diameter; lobes white, } in. long. 
Anthers mucronate above, long and narrow, muticous below, not hairy. 
Stigma with two nearly equal lips, the lower indistinctly deltoid. 
Capsule about 1 in. long, glabrous. 
Lower Guinea. Angola: Huilla ; Lopollo, in stony thickets, Welwitsch, 5009 ! 
This species and the 5 following form a small group in which the corolla-tube widens 
but little npwards. In its hower JT. Cycnium for this reason resembles rather that of 
some species of Jpomaa. 
24. 'T. gigantea, Lindau in Ann. I[stit. bot. Roma, vi. 68. Stem 
glabrous. Leaves ovate-cuneate, somewhat hastate at the base, cus- 
pidate above, entire or irregularly toothed along the margins, glabrous, 
14-2} in. long, 14-2} in. broad, 5-nerved at the base; petiole }-1} in. 
long. Flowers on peduncles 2} in. long; bracteoles ovate, rather acute, 
1}-1} in. long, glabrous, deciduous. Calyx irregularly toothed, glan- 
dular-pilose. Corolla puberulous on both surfaces; tube 7 in. long, 
narrow ; lobes 1 in. long, white, obtuse. Anthers acute above, rounded 
below, pubescent on the margins toward the base. Stigma 2-lipped. 
Capsule 2 in. long. 
Wile Zand. Somaliland: Jabijo, by the River Daua, in grass and under trees 
Riva, 428, 1498. 
If this species and the following are misplaced here, their affinity may perhaps be 
with T. alata. It is probable that 7, gigantea will prove to be a form of 7. guerkeana. 
25. T. guerkeana, Lindau in Engl. PA. Ost-Afr. C. 366. Stem 
climbing, glabrous. Leaves cordate-ovate with a tooth on either 
margin towards the base, 1}-4 in. long, 14-3 in. broad; petiole ?- 
14 in. long. Flowers on peduncles 13-3 in. long; bracteoles ovate, 
rather acute, reflexed. Calyx-teeth many, irregular, glandular. Corolla- 
tube narrow, upwards of 5 in. long, puberulous at first, later gla- 
brous; lobes 7-1 in. long, white. Anthers acute above and below, 
puberulous on the margins. Stigma 2-lipped, exserted, the lips 
unequal, 
Mile Land. British East Africa: Nyika country, Holst, 2410; Ukamba; Ula 
District, Fischer, 465. 
26. T. hamata, Lindau in Engl. Jahrb. xx. 2. Stem climbing, 
roagh with stiff hairs. Leaves ovate-hastate or cordate, somewhat 
acuminate above, with teeth along the margin, scabrid on both surfaces, 
31 in. long, 2 in. broad; petioles 1-1} in. long, scabrid. Flowers on 
scabrid peduncles 1-1} in. long; bracteoles lanceolate, long-acuminate, 
fused for nearly their whole length along their dorsal margins, pilose, 
at flowering 1 in. long. Calyx pilose below; teeth linear. Corolla- 
tube 1} in. long, scarcely widening upwards; lobes 3 in. long, retuse. 
