722 Lxxxvi. BOEAGiNE^. \C ynoglossum 



with 5 gibbosities, which do not close the wide throat ; stamens 

 iacluded ; anthers yellow ; ovary 4-lobed ; style simple, included, 

 seated at the base on a kind of quadrangular fleshly-inflated gynophore; 

 stigma subcapitate ; nutlets 4, distinct, depressed, densely echinate on 

 the dorsal angle, adnate to the base of the style. At the lower thickets 

 by the Ambaca road, fl. from Nov. to Jan., rather rare, Dec. 1855 ; also 

 in dense forests at the river Luinha ; Sange, 21 Nov. 1855. No. 5449. 

 HuiLLA. — An erect, annual or biennial herb, 2 to 3J ft. high, with 

 ihe habit of the genus ; stem thyrsoidly branched, as well as the leaves 

 softly pilose ; racemes mostly forked in terminal branchlets ; rachia 

 silky-pilose ; calyx obtusely 5-cleft ; corolla tubular-funnel-shaped, 

 5 -cleft ; the lobes of the limb white, obtuse ; the throat nearly closed, 

 as well as the tube violet-purple ; stamens inserted a little below the 

 throat, very short ; anthers yellowish, suboonnate ; nutlets 4, globose, 

 hispidulous ; style firm, short, rather thick ; stigma broadly truncate. 

 In thickets and hot pastures, on hills near Lopollo, not abundant ; 

 fl. 10 Jan. 1860. No. 5300. An annual herb, 2 to 3 ft. high, erect, 

 branched ; flowers few, violet-coloured. In hot parts of forests at an 

 elevation of 5000 ft. ; near the Monino river, plentiful ; fr. feb. 1860. 

 Coll. Caep. 76. 



7. ECHIUM Tournef., L. ; Benth. &Hook. f. Gen. PI. ii. p. 863. 



1. E. stenosiphon Webb in Hook. ZSTiger Fl. p. 155. 1. 15 (1849) ; 

 J. A. Schmidt, Fl. Cap. Verd. Ins. p. 226 (1852). 



Cape de Verde Islands. — In rocky maritime places in the island 

 of St. Vincent ; fl. Sept. 1853. No. 5469. 



LXXXVII. CONVOLVULAGE^. 



The Convolvulacese include plants which attract the attention 

 and admiration of the traveller on his first arrival on African 

 soil. Ipomoea hiloha Forsk. abounds everywhere along the sea- 

 shore, and in the richest luxuriance clothes with verdure the hot 

 sandhills ; it pushes along over the sands its purple-red stems, 

 which are not uncommonly 10 to 15 fathoms long, and which in 

 a short space of time are so luxuriantly clothed with leaves and 

 clusters of flowers that often a single plant produces a bright 

 green oasis. /. stolmvifera Gm., with its small whitish bell-shaped 

 flowers, occurs in like situations and frequently much closer to 

 the sea, so that it is often flooded with the tidal waters. An 

 Evolvulus, a Merremia, and a Seddera are found also in the 

 littoral region, and E. cdsinoides L. is one of the most abundant 

 plants on the dry hills and sandy pastures of this region. Towards 

 the interior Oonvolvulacese occur more and more frequently in 

 the mountainous region, sometimes as weeds, sometimes forming 

 a pretty green edging to lakes and swamps, or adorning with 

 their beautiful variously coloured flowers the bushes and trees 

 which overhang the rivers and streams, while in the highland 

 region they lose their climbing habit, and, as is the case vdth 

 many vines, they become erect shrub? ; an example of this latter 

 condition is seen in /. prisniatosyphon Welw., which is plentiful 

 in Pungo Andongo, and forms one of the chief ornaments of the 

 plateavix of that district. Lepistemon occurs in Angola only in 



