Pterothriz.| COMPOSIT ( Harv.) 275 
upper axils, as if spicate, 3-flowered; iny. scales acuminate; pappus of 
many plumes united in a ring at base; no external annulus? An 
Seriphium adpressum, DC. l. c.p. 263 (22). 
Has. Cape. (Herb. Sond.) 
A slender shrublet, with stems and foliage closely resembling those of Stoebe micro- 
phylla, but with different inflorescence, and at least 3-flowers in the capitulum. It 
may possibly be Seriphiwm? adpressum, DC., of which the flowers are unknown, 
Stems 6-8 inches high, branches 3-6 inches long, quite simple, or ramulous at the 
tips only. The aspect is that of a very slender Passerina. 
LXXXVIII. PTEROTHRIX, DC. (reform.) 
Heads 3-10-f1., homogamous. Other characters as in Amphiglossa, DC. 
Prodr. 6. p. 280 (ewel. Sect. 2. Lucilioides). Also Amphiglossa, Sect. 1. 
Aglossa, DC. l. c. p. 258. 
Small shrublets, spinous or unarmed. Leaves and infl. as in Amphiglossa, from 
which genus this differs solely by the homogamous heads. From Elytropappus it 
differs somewhat in habit, and also in the well-feathered pappus, and the want of 
an external annulus or outer pappus. Name from arepor, a wing, and Opit, a hair ; 
referring to the plumose pappus. ‘ 
Spiniferous ; lvs. linear, mucronulate; inv scales subacute ... (1) spinescens., 
Unarmed ; lvs. linear, obtuse ; inv. scales taper-pointed, acute (2) ichoi 
Unarmed ; lvs. lance-oblong, concave, 3-nerved beneath ... (3) cymbefolia. 
1, P. spinescens (DC. 1.c.280); many-stemmed ; stems much-branch- 
ed and twiggy, suberect or divaricate, the upper twigs often spinous ; 
leaves linear, convolute, mucronulate, scattered ; heads 3—5-fl.; inner inv. 
scales acute or obtuse, rufous. Also Amphidowa triflora, DC.! l. c. 258. 
Has. Near the Gariep and at Litaku, Burchell, Cat. 1845. Zwartekey, on the 
flats, Drege! Brack River, Burke § Zey.! Zey.! 907. (Herb. Hk., D., Sd.) 
A dwarf shrublet, 6-8 inches high, tufted ; branches and especially the spinous 
upper twigs widely spreading. Leaves 3-5 lines long. Heads, even in Drege’s 
specimens of ‘‘ Aimph. triflora,” as often 4-fl. as not, and sometimes 5-fi. Inv. scales 
variable, sometimes very obtuse. 
2. P. perotrichoides (Harv.) ; cxspitose, diffuse or decumbent, much- 
branched and twiggy, not spiny ; leaves linear, convolute, very obtuse, 
somewhat spiral and now and then tufted ; heads 4—5-fl. ; inner inv. 
scales much acuminated, rufous. Amph. perotrichoides. DC./ 1. ¢. 258. 
Has. Cape, Burchell, Mundt! Swellendam, Ecklon! (Hb. Hk., Sd.) 
Nearly related to P. spinescens, but not spinous, with very blunt leaves and much 
more taper-pointed inv. scales. 
3. P. cymbefolia (Harv.) ; stems shrubby, distantly and vaguely 
branched, unarmed ; leaves alternate, sparse, lance-oblong or oblong, 
cuneate at base, concave and tomentose above, convex, quite glabrous 
and 3-nerved beneath ; heads about 8—10-flowered ; inv. scales pluri- 
seriate, lanceolate, acuminate. 
Has. Betw. Bitterfontein and Mierekskasteel, Zey.! (Herb. Sond.) 
Stems woody, 1 foot or 2 in length, distantly branched. Leaves nearly an inch 
apart, 3-1 inch long, 2-4 lines wide, almost boat-shaped, obtuse or acute, tomentose- 
canescent above, distinctly 3-nerved and glabrous beneath. Heads 3 lines long, 
inv. scales imbricate in several rows. Achenes glabrous. Pappus of many amply- 
feathered, slender, deciduous bristles, Tails of the anthers short, barbellate or 
18* 
