Helichrysum. — Leyssera. ‘O81 
1348. (1.) Helichrysum conglobatum (Viv.) Steud. Nomencl. 
Bot. I (1840), p. 738. — Aschers.-Schweinf. Primit. Flor. Marmaric., 
p.653 no. 161. — Gnaphalium conglobatum Viv. Flor. Libye., p. 54 
tab. III fig.5. — Gnaphalium Stoechas Viv. Flor. Libye., p. 55. — 
Helichrysum siculum Boiss. rar. brachyphyllum Boiss. Flor. Or. U1, 
p. 230. — Aschers.-Schweinf. Ill. Flor. d’Eg., p. 88 no. 540. — 
Sickenberg. Contrib. Flor. d’Eg., p. 245. — Helichrysum Fontanesii 
Coss. Bull. Soc. Bot. France. XII, p. 278 not of Camb. — A perennial 
herb, 20—40 cm high, or sometimes somewhat more, many-stemmed; 
stems slender, simple, erect or decumbent, leafy. Leaves linear, 
revolute-margined. Corymbs terminal; heads few, 4 mm long, scales 
of the incolucre few, lemon-yellow, glossy, thin, obtuse, ovate, 
glabrous at the base, the inner-ones linear-spathulate, tomentellous 
at the back. — Flow. March to April. 
M. ma. Marmarica: Matruqa; between Esbet-el-Berberi and 
Bir Khreir; Mariut: Behig; Alexandria-West and -Hast. 
Local name: hezaz-el--adhra (Muschler). 
Also known from Arabia Petraea, Palestine and Syria. 
1349. (2.) Helichrysum Billardieri Boiss. and B. Diagnos. Plant. 
Orient., Ser. IT fase. V (1853), p.111. — Flor. Or. III, p.239. — 
Helichrysum virgineum DC. Prodrom. VI, p.177. — A perennial 
plant, 10—30 cm high, or sometimes somewhat more, appressed- 
woolly-canescent; rootstock woody; stems erect, leafy, 2—6-headed. 
Lower leaves obovate to spathulate, obtuse, tapering at the base, 
those of stem small, oblong-linear, acutish. Heads sessile or pedicelled, 
snow white or pinkish, 1,5 cm broad; scales of the involucre loose, 
obtuse, glossy, the outer ones oblong-elliptical, the inner ones linear- 
spathulate, tapering to a short, glabrous claw, all spreading wide 
open in fruit. — Flow. February to April. 
M. p. Rosetta, rare (Muschler). 
Also known from Syria, recently introduced? 
559. (19.) Leyssera Linn. 
Capitula heterogamous, radiate; flowers all or mostly fertile; 
those of the ray female, in one row, those of the disk hermaphrodite. 
Involucre turbinate-campanulate; bracts in several rows, imbricated, 
dry; the outer ones successively shorter. Receptacle flat, naked or 
nearly so in our species. Corolla of the ray-florets narrowly ligulate, 
of the disk-florets narrowly tubular, regular, shortly 5-cleft. Anther- 
base sagittate; auricles minute, very narrowly tailed. Style-branches 
narrow obtuse. Achenes narrow, angular. Pappus consisting of 
