OregonFlora: Pseudognaphalium thermale vs. Pseudognaphalium pringlei

	Pseudognaphalium thermale	Pseudognaphalium pringlei
	northwestern rabbit-tobacco, Wright's cudweed
Habit	Plants perennial, 2–9 dm.
Stems	floccose-tomentose, not glandular.
Leaves	1.5–9 cm, linear to oblanceolate to narrowly oblong, bases decurrent on stem, not clasping; surfaces floccose-tomentose, sometimes minutely glandular beneath longer trichomes.
Involucres	4–6 mm.
Phyllaries	in 3–4 series, white; surfaces glabrous.
Fruits	0.5–0.6 mm, brown; pappi white.
Outer florets	35–55; corolla tips yellow.
Inner florets	4–7.

	Pseudognaphalium thermale	Pseudognaphalium pringlei
Distribution	[WildflowerSearch map]	[BONAP county map]
Discussion	Conifer forests, shrublands, grasslands, riverbanks, lakesides, dry slopes, roadsides, disturbed areas. Flowering Jun–Oct. 0–2000 m. BW, Casc, CR, ECas, Sisk. CA, ID, NV, WA; north to British Columbia, northeast to Alberta, east to WY, southeast to UT. Native. Pseudognaphalium thermale is here recognized at the species rank rather than its earlier placement as a subspecies of P. canescens or a variety of P. microcephalum.
Source	Flora of Oregon, volume 2, page 327 Kenton Chambers
Sibling taxa	P. californicum, P. luteoalbum, P. macounii, P. stramineum	P. californicum, P. luteoalbum, P. macounii, P. stramineum, P. thermale
Synonyms	Gnaphalium canescens ssp. thermale, Gnaphalium microcephalum, Gnaphalium microcephalum var. thermale, Gnaphalium thermale
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Pseudognaphalium pringlei

northwestern rabbit-tobacco, Wright's cudweed

Habit

Plants perennial, 2–9 dm.

Stems

floccose-tomentose, not glandular.

Leaves

1.5–9 cm, linear to oblanceolate to narrowly oblong, bases decurrent on stem, not clasping;

surfaces floccose-tomentose, sometimes minutely glandular beneath longer trichomes.

Involucres

4–6 mm.

Phyllaries

in 3–4 series, white;

surfaces glabrous.

Fruits

0.5–0.6 mm, brown;

pappi white.

Outer florets

35–55;

corolla tips yellow.

Inner florets

4–7.

Pseudognaphalium pringlei

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

Conifer forests, shrublands, grasslands, riverbanks, lakesides, dry slopes, roadsides, disturbed areas. Flowering Jun–Oct. 0–2000 m. BW, Casc, CR, ECas, Sisk. CA, ID, NV, WA; north to British Columbia, northeast to Alberta, east to WY, southeast to UT. Native.

Pseudognaphalium thermale is here recognized at the species rank rather than its earlier placement as a subspecies of P. canescens or a variety of P. microcephalum.

Source

Flora of Oregon, volume 2, page 327
Kenton Chambers

Sibling taxa

P. californicum, P. luteoalbum, P. macounii, P. stramineum

P. californicum, P. luteoalbum, P. macounii, P. stramineum, P. thermale

Synonyms

Gnaphalium canescens ssp. thermale, Gnaphalium microcephalum, Gnaphalium microcephalum var. thermale, Gnaphalium thermale

Web links