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Pakistan | Family List | Pakistan V. 207 | Asteraceae | Xylanthemum

1. Xylanthemum fischerae (Aitch. & Hemsl.) Tzvelev, Fl. URSS. 26: 287. 1961.

Tanacetum fisherae Aitch. & Hemsl. in J. Linn. Soc. Lond. 19: 170. 1882; Podlech in Rech. f., Fl. Iran. 158: 137. t. 130. 1986; Pyrethrum fisherae (Aitch. & Hemsl.) Buser in Boiss., Fl. Or. Suppl. 300. 1888; Chrysanthemum fisherae (Aitch. & Hemsl.) Rech. f. in Dan. Biol. Skr. 8, 2:45. 1955.

Glabrescent, up to 35 cm tall, basally much branched shrublet with rigid, intricate, striate shoots from a thick woody rootstock. Leaves sparsely hirsute and densely punctate glandular, lower with petioles almost as long as lamina, 1.5 – 2 cm long, with remote, terete, mucronulate segments, middle and upper stem leaves sessile, gradually smaller in size. Capitula solitary terminal, 5 – 8 mm across, numerous per plant, on up to 15 cm long hairy peduncles. Involucre hemispherical to broadly campanulate, phyllaries obtuse, outermost and median ovate, pale green, externally hairy, broadly membranous dark brown margined, innermost apically dilated, hyaline, ± lacerate and light brown. Flowers yellow, bisexual, with 2.5 – 3 mm long, punctate glandular, shortly 5-toothed corolla tube. Cypselas narrowly prismatic, as long as corolla tube, distinctly 5-ribbed, punctate glandular. Pappus unilateral, 1.5 – 2 mm long, entire to sinuate toothed at the apices, whitish.

Fl. Per.: July-August.

Type: Hariáb District, Mount Síka-rám, Serátígah and Sergal, 10000-13000 ft J. E. T. Aitchison 366 (K!).

Rare or undercollected in our area, in stony and gravelly dry hillsides above 3000 m; Distribution: Afghanistan (Central and Eastern regions), Pakistan, and Central Asia (Pamir Alai ranges).


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