8 XCVIII, ACANTHACEA (BURKILL). 
2, THUNBERGIA, Linn.; Benth. et Hook. f. Gen. Pl. ii. 1072. 
Calyx with long teeth or truncate. Corolla conspicuous, white, or 
of various shades of yellow, blue, or purple; lobes 5, equal or nearly so, 
contorted. Stamens 4, enclosed in the tube of the corolla, on which 
near the base they are inserted. Pollen globose, smooth, reticulate or 
spiny. Disc fleshy, forming a ring round the ovary. Stigma 2-lipped 
or funnel-shaped, overtopping the anthers. Ovary with 2 collateral 
ovules in each cell. Capsule with a sterile beak above and a spherical 
fertile part below, loculicidal. Seeds ovoid or compressed dorsally, 
smooth or warted; hilum central; no retinacula.—Herbs or shrubs, 
erect or climbing, with flowers usually solitary, each protected by a pair 
of large bracteoles.—Meyenia, Nees in Wall. Pl. As. Rar. iii. 78. 
Lindomelas, Rafin. F]. Tellur. iv. 67. 
A genus of about 75 species, chiefly African, extending into India, and by three 
species represented in Tropical Australia; in America as introduced plants. The 
genus readily falls into three sections, two of which are found in Tropical Africa. 
“Buri unpencra.—Stigma 2-lipped ; calyx tsually with long 
teeth 
Shrubs ; anthers without spur at the base (except in 9) 
but with a spiny crest on each lobe. 
Bracteoles covered with hairs. . . . . 1. T. rufescens. 
Bracteoles glabrous, or only sparingly hairy. 
Bracteoles leathery. 
Leaves large, ovate . . . . 2. T. vogeliana. 
Leaves small, cordate . . . . . 3. ZT. longisepata. 
Bracteoles membrancus. 
Calyx-teeth long. 
Young branches hairy. 
Leaves glabrous, except on the midrib . . 4 TT. malangana. 
Leaves scabrid beneath, and hairy along the 
veins . . . . . . . & TL. adenocalyx. 
Young branches glabrous. 
Peduncles less than 14 in. long. 
Leaves usually large; bractevles more than 
1 in. long. : . . . . 6. TL. affinis. f 
Leaves small; bracteoles less than 1 in. 
long . . . . . . 7. T. erecta. 
Peduncles 14-24 in. long 8. 7. crispa. 
Calyx truncate . . . . . . . 9. T. hookeriana. 
Herbs, for the most part climbing; anthers usually 
spurred below and with long hairs. r 
t+Lobes of the stigma firm, the lower rounded (de!toid in 
21 and not known in 11); corolla-tube usually 
widening to the throat. 
Leaves sessile. ~ 
Leaves twice as long as broad, or longer. 
Erect herbs ; peduncles much shorter than 
the leaves. 
Leaves upwards of 4 in, long, more or less 
hirsute. . - 10. ZT. annua. 
Leaves only 1 in. long, hispid . . - 11. Ti hispida. | 
Climber ; peduncles exceeding the leaves. 12. 7. paulitschkeava. 
Leaves with their breadth more than half their 
length. 
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