26 xcviii. ACANTHACEiE (burkill). [Thunhevgia. 



Var. auricvlata, S. Moore in Jouvn. Bot. 1880, 195. Leaves auricled at the base 

 or more or less cordate. — T. lancifolia, var. pallida, S. Moore, loc. cit. 



Ziower Guinea. Angola : Huilla ; Lopollo, in sandy thickets, Welwitsch, 5011 1 

 Monino, in thickets, Welwitsch, 5012 I 



50. T. hyalina, aS'. Jfoore in Jown. Bot. 1880, 105. Stem erect, 

 1-2J ft. high, glabrous, striate when dry. Leaves sessile, amplexicaul, 

 oblong, obtuse or acute, glabrous and shining on both surfaces, entire, 

 scabrid on the margins, firm. Flowers solitary, on short peduncles 

 about 5 lin. long ; bracteoles oblong-lanceolate, acute, 5-nerved, scabrid. 

 Calyx short, truncate. Corolla glossy purple, very similar to that of 

 T. lancifolia; tube orange, and about \\ in. long. Anthers with a 

 mucro at the apex, hairy at the base; the lower pair with one lobe 

 spurred at the base. Stigma funnel-shaped, triangular, barbellate. 



ZiOwer Guinea* Angola : on rocky hills, near the River Cuanza, Welwitsdi, 

 5164 1 



Certainly very close to T. lancifolia; the stamens are not glabrous, as stated in the 

 original description. 



51. T. cerinthoides, Radlkf. in Ahhandl. naturw.Ver. Bremen, viii. 

 434. Stem glabrous except at the nodes, quadrangular, sulcate when 

 dry. Leaves oblong or obovate-elliptic, 2 in. long, | in. wide, obtuse 

 or somewhat acute, cordate at the base, almost sessile, entire, firm, 

 glabrous but for short hairs on the margin. Flowers on peduncles 

 about 7 lin. long ; bracteoles ovate-lanceolate, somewhat oblique, 1 in. 

 long, J in. wide, acute, 3-nerved, hirsute with glandular hairs outside, 

 glabrous within, except at the tip. Calyx very short, sinuate-dentate. 

 Corolla-tube IJ in. long, yellow, glandular; lobes violet. Anthers 

 mucronate above, pilose ; the inner pair each with one spur. Stigma 

 funnel-shaped, triangular, barbellate. 



Iiower Guinea. Angola : Malange, Mechow, 373. 



This species may prove only to be a form of T. hyalina, with larger flowers, and 

 somewhat less glabrous. The distinction in the stamens which Radlkofer mentions 

 fails, for T. hyalina was incorrectly described in this particular. 



52. T. gentianoides, Radlkf in Ahhandl. naturw.Ver. Bremen, vi\i, 



433. Stem herbaceous, 3-4 ft. high, quadrangular, glabrous, except 

 at the nodes, sulcate when dry. Leaves narrowly lanceolate, about 

 2 J in. long, J in. wide, acuminate above, subcordate below, sessile, 

 glabrous. Flowers on peduncles |-1 J in. long ; bracteoles obliquely 

 ovate or ovate-lanceolate, 1 in. long, 5 lin. broad, rather acute, 3-nerved. 

 Calyx very short, with a few blunt teeth, puberulous at the base. 

 Corolla-tube IJ-lJ in. long, somewhat orange, glandular; lobes blue. 

 Anthers all mucronate above and hairy below, the ventral pair with 

 one curved spur each at the base. Stigma funnel-shaped, triangular, 

 barbellate. 



ZiOwer Guinea. Angola: Malange, Mechow, 195. 



53. T. stellarioides, Burkill. Stem erect, glabrous, sulcate when 

 dry. Leaves linear, sessile, acute or somewhat obtuse, glabrous, Ij in. 



