Marsea | LXXI, COMPOSITA. 553: 
between Quibinda and Izanga, not common; fl. and fr. Oct. 1856. 
No. 3421. 
Huriia.—Flowers yellowish. On exposed hills at the borders of 
fields and among crops ; fl. and fr. Jan. 1860. No. 3422. 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. Pl. i. p. 284. 
1. P. arabica Jaub. & Spach, Illustr. Pl. Orient. iv. p. 85, 
tt. 352, 353 (1850-53); O. & H. in Oliv. Fl. Trop. Afr. i. p. 319. 
Houiitia.—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. 3912. A glutinous little 
shrub, 21 in. high or more, branched at the root, remarkable by reason 
of its foliage and inflorescence exuding agummy resin. Inshrubberies 
between Mumpulla 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. lyciodes Hiern, sp. n. 
A nearly glabrous shrublet, 3 to 4 ft. high, with the habit 
nearly of Lycium; stems numerous, cespitose, 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, 
+ to 2 in. long by ,}, to + 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, ciliate, 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 corollas of the hermaphrodite 
flowers, easily detached; the sete straight, erect, barbellate ; 
receptacle convex, irregularly pitted and shortly fimbrillate, not 
paleaceous ; ripe achenes not seen. 
