Gnaphalium palustre

Nuttall
Trans. Amer. Philos. Soc., n. s. 7: 403. 1841.
Common names: Western marsh cudweed
Synonyms: Filaginella palustris (Nuttall) Holub Gnaphalium palustre var. nanum Jepson Gnaphalium heteroides
Treatment appears in FNA Volume 19. Treatment on page 429. Mentioned on page 444.

Annuals, (1–)3–15(–30) cm; taprooted or fibrous-rooted. Stems commonly with decumbent branches produced from bases, densely or loosely and persistently woolly-tomentose. Leaf blades spatulate to oblanceolate-oblong, 1–3.5 cm × 3–8(–10) mm. Bracts subtending heads oblanceolate to obovate, 4–12 × 1.5–4 mm, shorter than or surpassing glomerules. Heads in capitate glomerules (at stem tips and in distalmost axils). Involucres 2.5–4 mm. Phyllaries brownish, bases woolly, the inner narrowly oblong with white (opaque), blunt apices. 2n = 14.


Phenology: Flowering May–Oct.
Habitat: Arroyos, sandy streambeds, pond edges, potholes, other moist, open sites
Elevation: 100–2900 m

Distribution

V19-708-distribution-map.gif

Alta., B.C., Sask., Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., Oreg., S.Dak., Utah, Wash., Wyo., Mexico.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Gnaphalium palustre"
Guy L. Nesom +
Nuttall +
Western marsh cudweed +
Alta. +, B.C. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wyo. +  and Mexico. +
100–2900 m +
Arroyos, sandy streambeds, pond edges, potholes, other moist, open sites +
Flowering May–Oct. +
Trans. Amer. Philos. Soc., n. s. +
Filaginella palustris +, Gnaphalium palustre var. nanum +  and Gnaphalium heteroides +
Gnaphalium palustre +
Gnaphalium +
species +