قيصوم سرخسي

A new record for the flora of Pakistan.

Erect, up to 1 m tall herb, with appressed to ± patulous short hairy, densely leafy shoots from 5-10 mm thick woody rootstock. Leaves green, densely appressed hairy and punctate glandular; basal and lower stem leaves on 0 – 5 cm long, basally broadened petioles, oblong-lanceolate, 10 – 20 cm long, 3 – 7 cm wide, pinnatipartite with oblong, 10 – 20 x 5 – 10 mm, ± incised and acute segments, upper stem leaves pinnatifid, with short, obtusish segments. Capitula 30-50 or rarely more, on 2 – 8 mm long peduncles, in dense, 4 – 10 cm broad, unequally high corymbs. Involucre obovoid-oblong or oblong-cylindrical, 3.5 – 5 x 2.5 – 3.5 mm, basally attenuate, phyllaries pale to whitish-green, externally pubescent and gland dotted, outer linear-lanceolate, acute, inner triangular- lanceolate, ± acute to obtuse. Paleae oblong-lanceolate, shorter than the florets, membranous, glabrescent, acute. Ray-florets 2-4, with golden, 0.7 – 1 x 1.3 – 1.5 mm, 3-lobed limbs. Disc-florets 15-30, with 2 – 2. 5 mm long, yellow corolla tube. Cypselas oblong, 1.5 – 1.75 mm long, light brown.

Distribution: Turkey, Iraq, Iran, Central Asia, Afghanistan, and Pakistan.

Fl. Per.: July-August.

Tanacetum angulatum Willd., Tract. de Achilleis 52. 1789; Achillea eupatorium M. Bieb., Tabl. Prov. Casp. 119. 1798; A. ficifolia M. Bieb., Fl. Taur.-Cauc. 2: 338. 1808; Tanacetum angulare Willd., Tract. de Achilleis 52. 1789.