Shutereia] lxxxvii. cohvolvulaoB/E. 727 



I.e., p. 78. Hewittia Wight (1837); Benth. & Hook. f. Gen. PI. ii. 

 p. 873 ; Hall. f. in Engl. Bot. Jahrb, xvi. p. 581 (1893). 



1. S. bicolor Ohoisy, I.e., p. 486. 



Convolvulus suhlohatusli. f. Siippl. PI. p. 135 (1781). C. hraetea- 

 tus Vahl, Symb. iii. p. 25 (1794). C. bieolor Vahl, I.e. Hewittia 

 bicolor Wight in Madr. Journ. Sc, ser. 1, v. p. 22 (1837). H. sub- 

 lobata 0. Kuntze, Rev. Gen. PI. ii. p. 441 (1891); Hall, f., I.e., 

 xviii. p. 111. Ipomma benguelensis Baker in Kew Bull. 1894, p. 69. 



LoANDA. — A perennial, bright green, densely leafy herb, climbing 

 far and widely ; flowers twice as large as in Thimhergia alata, deep 

 orange in colour, violet purple at the bottom of the tube. In fields at 

 Loanda, March 1854. Coll. Carp. 761. 



GoLUNGO Alto. — A sarmentose- twining herb, quite like a Thunbergia 

 in habit ; calyx herbaceous-green, the outer sepals larger than the 

 rest ; corolla sulphur in colour, atropurpureous inside at the base 

 especially about the insertion of the stamens ; stigma capitate. On the 

 lower thickets and on reed-beds ; also rarely on the ground, principally 

 in Sobato de Bumba ; fl. and fr. July 1865. No. 6225- A perennial, 

 twining herb, climbing widely but not high ; flowers capitate-involucrate ; 

 corolla very fugacious ; the young ones shortly campanulate, sulphur- 

 yellow, dark purple at the base inside ; the limb 5-crenate, 5-plicate ; 

 the folds longitudinally pilose-bearded ; the beard long, prominent as 

 pencils at the tips of the folds ; anthers violet-coloured, comparatively 

 large, thick, curvei ; stigma capitate-bilobed, the lobes almost totally 

 separate. In bushy woods, climbing on Manhiot, wild ; near N-delle, 

 few fl. middle of April 1856 ; Moangue N-delle ; fl. May 1856. No. 6221. 



Ambaca. — Corolla funnel-shaped, pale sulphur in colour, dark purple 

 inside at the bottom ; the limb rugose-crispulate, 5-plicate ; one 

 stamen constantly higher than the rest ; anthers white ; stigma bicapi- 

 tellate, the capitellse white, ovoid ; the old ones furrowed above, 

 diverging at an obtuse angle ; capsule 4-furrowed, pilose. In the lower 

 thickets and in rather dry sparingly grassy places near the banks of the 

 river Coango and near Quibixe ; fl. and young fr. Aug. 1856. No. 6224- 



Bumbo. — In thickets between Quitive and Bumbo ; fr. Oct 1859. 

 No. 6127. 



8. MERREMIA Dennst. Schluss. Hort. Malab. p. 34 (1818); 

 Hall. f. in Engl. Bot. Jahrb. xvi. p. 581 (1893). 



Ipmnoea Benth. & Hook. f. Gen. PI. ii. p. 870, partly. Con- 

 volvulus Benth. & Hook, f., I.e., p. 874, partly. 



1. M. pterygocaulos Hall, f., I.e., xviii. p. 113 (22 Dec. 1893). 

 Convolmdus pterygocaulos Steud. in PI. Sohimp. Abyss, ii. n. 630 

 (U. i., 1842). Ipomoea pterygocaulos Choisy in DO. Prodr. ix. 381. 



GOLUNGO Alto. — Stem acutely and broadly winged, widely climbing ; 

 flowers campanulate, white. In bushy places at the rivulet Cuango, 

 near Canguerasange ; fl. Oct. 1854. No. 6164. Stem twining, climbing 

 high, fleshy, 3-winged ; the wings broad, reddish ; corolla campanulate, 

 snow-white, coloured inside with a purplish ring which forms a belt 

 above the insertion of the stamens and radiates upwards. By 

 thickets and in reed-beds near Bango and Sange, rather rare ; and more 

 plentifully at the base of the Queta mountains ; fl. June and July 1856. 

 No. 6143. At Sange ; fl. and fr. June 1866. No. 6165. 



The pollen is gloljose and not spiny. 



