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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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