Centaurea. 1039 
from the base; branches leafy, forked, proliferous, 1—3-headed. 
Leaves linear-oblong, pinnatipartite or cut into oblong to linear, 
toothed or lobed segments, the upper ones nearly entire, minutely 
auricled at the base. Heads ovate-oblong, 1,5 cm long, with thickish, 
short peduncles, bracted by the upper leaves; spines of the involucre 
curved, 4—5 times as long as the scales, with two prickles on 
either side of the lower half; flowers pale-purple. — Flow. March 
to April. 
D. 1. D. a. sept. Common in deep sand and on calcarious ground. 
Local name: yamrtr; yamrar (Forsk.). 
Also known from Arabia Petraea, Palestine and Syria. 
1450. (15.) Centaurea glomerata Vahl Symb. II (1791), p. 94. 
— Boiss. Flor. Or. II, p.679. — Coss. Illustr. Flor. Atlant. II, p.65 
tab. 138 fig. 12—15. — Aschers.-Schweinf. Ill. Flor. d’Eg., p. 95 
no. 608. — Aschers.-Schweinf. Primit. Flor. Marmaric., p. 656 no. 188. 
— Sickenberg. Contrib. Flor. d’Eg., p. 249. — Centaurea prolifera 
Vent. Deser. Jard. Cels., tab. 16. — Centaurea straminea Willd. Hort. 
Berol., tab. 26. — An annual plant without stems or proliferous and 
divaricately branched; branches fleshy decumbent. Leaves beset 
with minute crispulous papillae, the basilar ones rosulate, elongate 
pinnately cut into small oblong mucrenulate lobes; those of the 
stems sessile, abbreviate, obtuse, pinnatisect or somewhat absent; 
capitula in dense glomerules sessile, small, oblong; scales of the 
involucre yellow longly araneose at the margin, imbricate oblong 
attenuate at the apex, with subpalmately spines at the top; the 
inner ones membranous hyaline ovate, toothed, decurrent; flowers 
yellow; achenes minute, obovate smooth. — Flow. March to April. 
M. ma. Marmarica: Matruqa; Dakalla; Abusir; Mariut; Alexan- 
dria-West and -East; Abukir. — M. p. D.i. Often in deep sandy 
places. 
Local name: surret-en-nage (Forsk.). 
Also known from Egypt. 
var. glabriceps Aschers.-Schweinf. in Primit. Flor. Marmaric. 
(1893), p.656 no. 188. — Scales of the involucre glabrous. — 
Flow. March. 
M. ma. Marmarica: Matruqa. 
Only known from Kgypt. 
1451. (16.) Centaurea dimorpha Viv. Flor. Libyc. (1824), p. 58 
tab. 24 fig. 3. — Boiss. Flor. Or. HI, p.692. — Aschers.-Schweinf. 
Ill. Flor. d@’Eg., p.96 no.614. — Sickenberg. Contrib. Flor. d’Eg., 
p. 249. — Aschers.-Schweinf. Primit. Flor. Marmaric., p.656 no. 190. 
