Marsed] lxxi. compositjE. 553^ 



between Quibinda and Izanga, not common ; fl. and fr. Oct. 1856. 

 No. 3421. 



HuiLLA. — Flowers yellowish. On exposed hills at the borders of 

 fields and among crops ; fl. and f r. Jan. 1860. No. 3432. In fields 

 after a crop of Andropogon Sorghum Brot., near Lopollo ; fl. and fr. 

 Feb. and May 1860. A pubescent strictly erect simple herb, 1^ ft. 

 high. One specimen. No. 3436. 



19. PSIADIA Jacq. ; Benth. & Hook. f. Gen. PI. ii. p. 284. 



1. P. arabica Jaub. & Spach, Illustr. PL Orient, iv. p. 85, 

 tt. 352, 353 (1850-53) ; 0. & H. in Oliv. Fl. Trop. Afr. iii. p. 319. 



HuiLLA. — A slender shrublet, 3 to 4 ft. high, with red stem and 

 yellow flowers. In thickets at the outskirts of the forest, near lake 

 Ivantala ; fl. and fr. end of Feb. 1860. No. 3913. A glutinous little 

 shrub, 21 in. high or more, branched at the root, remarkable by reason 

 of its foliage and inflorescence exuding a gummy resin. In shrubberies 

 between MumpuUa and Nene ; fl.-bud Oct. 1859. No. 3913. Flowers 

 yellowish. In thickets composed of Duranta erecta L. (Welw. Herb, 

 no. 5760), and Clerodendron (Welw. Herb. no. 5763), near Lopollo, 

 sporadic ; fl. and fr. Dec. 1859. No. 3914. 



Our specimens differ from the form of the plant usual in other parts 

 of tropical Africa by their finely serrulate willow-like leaves, and the 

 serratures are nearer together and more constantly present than in 

 the type of the species. 



2. P. lyoiodes Hiern, sp. n. 



A nearly glabrous shrublet, 3 to 4 ft. high, with the habit 

 r\early of Lycium ; stems numerous, csespitose, virgate-oblique ; 

 branches rather slender, pallid-purplish, subterete, sulcate striate, 

 leafy ; branchlets often inclined in one direction and very leafy; 

 leaves alternate, narrowly oblanceolate-linear, obtuse or somewhat 

 pointed at the apex, attenuate towards the sessile or subsessile 

 base, rather fleshy, viscid, dull yellowish-green on both faces, 

 i to 2 in. long by -^^ to i in. broad, entire ; capitula disciform, 

 campanulate-oblong, \ in. long, \ in. in ' diameter, many-flowered, 

 subsessile in small clusters or some on short peduncles, arranged 

 in small sub-thyrsoid cymes terminating the lateral shoots or 

 branches ; involucral bracts pluriseriate, unequal, lanceolate or 

 sublinear, obtuse, imbricate, yellowish or straw-coloured with 

 greenish midrib, glandular-puberulous, ciUate, the inner ones 

 ranging up to \ in. long, the outer ones gradually shorter ; corollas 

 yellow, not exserted, those of the central hermaphrodite florets 

 narrowly tubular, shortly 5-lobed, those of the numerous outer 

 female florets very slender, rather shorter than or scarcely 

 equalling the former ; the lobes oval-oblong, obtuse, minutely 

 sessile-glandular outside ; anthers obtuse, entire, not sagittate at 

 the base; style glabrous, shortly bilobed, the branched with 

 narrow acute tips ; ovary somewhat compressed, glabrous, or 

 minutely sessile-glandular, small ; pappus setose, straw-coloured, 

 uniseriate, about as long as the coroUas of the hermaphrodite- 

 flowers, easily detached ; the setae straight, erect, barbellate ; 

 receptacle convex, irregularly pitted and shortly fimbrillate, not 

 paleaceous ; ripe achenes not seen. 



