2. Pteropyrum olivieri Jaubert & Spach, Ill. Pl. Or. 2:9 t.108. 1844; Boiss., l.c. 1002; Hook.f., l.c. 23; Cooke, l.c. 2; Talbot, l.c. 370; Kitamura, Fl. Afgh. 94. 1960; Rech.f. & Schiman-Czeika, l.c. 37; Cullen, l.c. 268; R.R.Stewart, l.c. 212. (Fig. 28, A-D).
Vern.: Gharwangi karwan kushki.
Pteropyrum gracile Boiss., Diagn. Pl. Or. Nov. Ser. l. 12:102. 1853; Pteropyrum griffithii Meisn. in DC., Prodr. 14:31. 1856; P. olivieri ß gracile Boiss., Fl. Or. 4: 1002. 1879; P.olivieri var. scabrida Gilli in Feddes Repert. 68: 242. 1963.
A branched shrub with glabrous, ± whitish branches. Leaves in fascicles, sessile to subsessile, 5-20 x 2.0-10 mm, obovate, spathulate, linear-oblong or linear-oblanceolate, obtuse, entire; ochrea membranous, produced at one or either side into a triangular appendage. Flowers axillary in loose clusters of 5-6, pedicellate, pedicel 4-8 mm long, usually inarticulate, sometimes inconspicuously articulate at the base. Perianth segments white-pinkish, 1.5-2 mm long, 0.5-1.5 mm broad, lanceolate to oblong. Stamens 1-1.3 mm long. Ovary 0.3-0.5 mm long. Fruits winged, 4-8 mm across, wings red, the upper lobe almost contiguous with the lower, nut brown, half the size of wing. Seeds brown.
Fl. Per.: September to October.
Type: Persia, circa Tehran, Olivier & Bruguiere s.n. (P.).
An Irano-Turanian element extending into Saharo-Sindian region, grows on stony ground and sandy areas, from plains to 1900 m; Distribution: Afghanistan, Pakistan, Iran, Iraq, Turkey, Arctic and Subarctic Europe, India, China, Central Asia and N.America.
