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Pakistan | Family List | Pakistan V. 210 | Asteraceae | Gamochaeta

Gamochaeta pensylvanica (Willd.) Cabrera in Bot. Soc. Argentina Bot. 9: 375. 1961; S. Gould in Hara et al., Enum. Fl. Pl. Nepal 3: 28. 1982; Grierson & Springate, l.c. (Fig. 28, A-D).

  • Gnaphalium pensylvanicum Willd.
  • Gnaphalium purpurea auct.
  • Gnaphalium spathulatum Lam.

    Erect herbs, up to 40 cm tall, stem simple or branched from the base, with thin greyish to white tomentum. Leaves spathulate, usually narrowed at base, 2-5 x 0.6-1.5 cm, broadly rounded, shortly mucronate at the apex, sparsely lanate on the upper surface, white to greyish tomentose on the lower surface. Capitula in short, interrupted spicate clusters, c. 2 mm across, peduncle very short, c. 0.5 mm long; phyllaries 2-3 seriate, outer ones light brown, ovate-lanceolate, acuminate, with white woolly tomentum at the base; inner ones oblong, subacute to obtuse, 3-3.5 x c. 0.7 mm. Outer florets filiform. Corolla c. 1 mm long; disc florets bisexual, c. 2 mm long. Cypeselas c. 0.5 mm long; pappus setae almost equalling the corolla, white.

    Fl. Per.: December-July.

    Type: From Pensylvania, Virginia.

    Distribution: A native of N America, now widespread as a weed.


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