802 xciv. ACANTHACE^. [Thunbergia 



ornamental ; flowers handsome, deep blue, like those of Gloxinia in 

 size and shape ; calyx deeply 10-cleft. In shady forests, near Oaldlo 

 in Sept. and at the Capopa spring 1 Deo. 1854 ; fl. and unripe fr. 

 No. 5181. At Casaballa ; fl. and fr. July 1856. No. 5154. Flower 

 2 in. long ; bracteoles f in. long ; peduncles whitish, ^ in. long. 

 No. 5113. No notes. No. 5088, as to the flowering pieces (the leafy- 

 shoot of this No. bears tendrils and belongs to a different Order). By 

 oil-palms near the banks of the river Cuango ; fr. Dec. 1855. Coll. 

 Cakp. 835. A lovely, evergreen shrub, climbing high and far ; trunk 

 hard, woody, scarcely as thick as a man's finger ; branches sarmentose, 

 purplish, somewhat twining ; leaves softly coriaceous, quite glabrous, 

 ovate-lanceolate, gradually narrowed at the apex into a long acumen, 

 repand-undulale on the margin, deep green and but little shining^ 

 above, pale green and elevately-ribbed beneath : petioles J to J in. 

 long, semi-cylindrical, more or less curved, articulate at the base ; 

 flowers solitary in the axils of the leaves, azure-blue, handsome, with 

 the aspect of a Gloxinia ; peduncles 1 to 1^ in. long ; calyx deeply 

 12- or 13-cleft, bibracteolate at the base ; bracteoles thinly membranous, 

 pale greenish, obliquely ovate, acuminate, nearly glabrous, 5-nerved, 

 J to I in. long, quasi-spathelike in consequence of the sides more or 

 less cohering ; calyx-lobes lanceolate-linear, not subulate, erect, loosely 

 embracing the corolla-tube, green, densely beset with stalked glands, 

 the alternate lobes shorter ; corolla funnel-shaped, almost bilabiate 

 after the fashion of Bignoniaceae or Gloxinia \ the tube an inch long, 

 transversely compressed, constricted above the ovary, gradually and 

 obconically dilated above, obtusely keeled on the upper side, rather 

 acutely keeled on the lower side, whitish violet on the exterior, deep 

 yellow within ; the limb 5-clef t, patent, deep blue both inside and out ; 

 the lobes obovate-subrotund, imbricate and contorted at the base ; 

 stamens 4, adnate to the corolla-tube a little above its constriction, 

 didynamous, included ; filaments flatly compressed, 2-edged, yellowish 

 at the base ; anthers bilocular, white ; the cells somewhat diverging 

 and not aristate at the base, ciliate-bearded, one cell much shorter than 

 the other, the beard white, the connective produced beyond the cells 

 into a subulate acumen ; ovary semi-ellipsoidal ; style simple, a little 

 exceeding the stamens, incumbent in the lower side of the corolla- tube, 

 whitish ; stigma bilabiate, whitish ; the lower lip funnel-shaped, the 

 outline of its mouth obcordate ; the upper lip triangular, transversely 

 placed with reference to the lower lip ; disk hypogynous, fleshy, form- 

 ing a ring round the base of the ovary. In dense very shady forests 

 close to the banks of the river Cuango, at Capopa, near Sange ; fl. and 

 young fr. 19 June 1856. Probably this species or its variety ^uZwinata, 

 S. Moore, I.e., p. 6 ; Burchill, I.e., p. 12. No. 5145. The species 

 occurred also near N-delle, 19 Nov. 1855. 



Pdngo Andongo. — A shrub climbing to a great height and then 

 hanging down ; bracteoles petaloid, apparently white ; corolla deep 

 blue, the tube yellow inside. At the banks of the river Lombe, 

 sparingly ; fl. and fr. end of March 1857. No. 5109. 



The Lichen n. 274 at Sange in Feb. 1855 grew on the leaves of 

 perhaps this species of Thunbergia. 



2. T. huillensis S. Moore, I.e., p. 194 ; Burkill, I.e., p. 15. 



HuiLLA. — Flowers pale blue ; capsule compresaedly ovoid -conical, 

 bivalved, f in. long, just exceeding the bracteoles. In the more 

 elevated pastures of Morro de Monino among low bushes ; fl. and fr 

 Jan. and Feb. 1860. No. 5025. 



