22 XCVIII, ACANTHACEE (BURKILL). [ Thunbergia. 
36. T. Mechowii, Lindau in Engl. Jahrb. xvii. 92. Stem thin, 
sparingly hairy, twining. Leaves hastate, truncate or rounded at the 
base, 2} in. long and 14 broad, mucronulate above, sparingly pilose, 
7-nerved; petiole slightly winged. Flowers on peduncles of great 
length (up to 43 in.); bracteoles lanceolate, nearly 1 in. long, 5-nerved 
and reticulated, keeled on the back. Calyx toothed. Corolla-tube 
1 in. long; lobes 4 in. long, violet. Anthers with a spur above and 
spurs below. Stigma funnel-shaped, triangular, barbellate. 
Lower Guinea. Angola: Malange, Mechow, 334. 
37. T. stuhlmanniana, Lindau in Engl. Jahrb. xvii. 91. Stem 
quadrangular, herbaceous, sparingly hairy. Leaves hastate, long and 
sharply pointed above and also in the auricles, thin, entire, both above 
and below with yellow hairs on the veins and margin, 2} in. long and 
1} broad; petiole densely clad with yellow hairs above, 1 in. long. 
Flowers solitary on peduncles 1} in. long; bracteoles ? in. long, oblique, 
lanceolate, 4—5-nerved, reticulated, with hairs on the principal veins. 
Calyx very small, with 8-10 teeth. Corolla-tube 14 in. long, yellow ; 
lobes deep violet, 7 lin. long. Stamens with basal hyaline spurs. 
Ovary somewhat round ; stigma funnel-shaped, triangular, barbellate. 
South Central. Congo Free State: Butumbi, south of Lake Albert Edward, 
5700 ft., Stuhlmann, 2181, 
38. T. cordata, Lindau in Engl. PA. Ost-Afr. C. 365. Stem 
herbaceous, minutely puberulous, Leaves ovate-cordate, glabrous or 
with solitary hairs towards the base, more than 3 in. long and half 
as wide, with five nerves at the base; petiole about lin. long. Flowers 
on peduncles equalling the petioles; bracteoles about 4 in. long, 3 lin. 
broad, ovate, acuminate, 3-nerved, with glandular hairs, Calyx slightly 
lobed. Corolla-tube 1 in. long, with glandular hairs; lobes 4 in. long, 
bright blue. Anthers spurred above and below, sparsely hairy. Stigma 
funnel-shaped, triangular, barbellate.-—Lindau in Engl. Jahrb. xxiv. 310. 
Mozamb. Dist. German East Africa: Kilimanjaro: Useri, 6200 ft., Volkens, 
1968. 
39. T. togoensis, Lindau in Engl. Jahrb. xxii.112. Stem climbing, 
glabrous. Leaves large, cordate-ovate, acuminate, glabrous, 5-nerved, 
6-7 in. long, 3-4 in. wide; petiole 14-3 in.long. Flowers on peduncles 
1 in. long; bracteoles ovate, acute or shortly acuminate, nearly 1 in, 
long, almost glabrous. Calyx lobed. Corolla-tube 1} in. long; lobes 
7 lin. long, blue. Anthers acute above, hairy, the lower with a spur to 
the base of its lower lobe only. Stigma funnel-shaped, triangular, 
barbellate. 
Upper Guinea. Togoland: Misahdhe, near Aundjowe-Avatime, 2000 ft., 
Baumann, 74! 
40. T. mollis, Lindau in Engl. Jahrb. xvii. Beibl. 41, 34, and xx. 2. 
Stem with a rusty pubescence or sometimes glabrous, suleate when dry. 
Leaves ovate, cordate or hastate, 2} in. long, 1} in. broad, frequently 
