OregonFlora: Pseudognaphalium luteoalbum

	Pseudognaphalium luteoalbum
	weedy cudweed
Habit	Plants annual, 1.5–4 dm.
Stems	floccose-tomentose, not glandular.
Leaves	1.5–5 cm, broadly or narrowly linear to oblanceolate, bases clasping, not decurrent; surfaces floccose-tomentose, not glandular.
Involucres	3–4 mm.
Phyllaries	in 3–4 series, green or brownish; surfaces glabrous.
Fruits	0.3–0.5 mm, brown; pappi white.
Outer florets	130–160; corolla tips red.
Inner florets	5–10.
2n	=14, 16, 28.

	Pseudognaphalium luteoalbum
Distribution	[WildflowerSearch map]
Discussion	Riverbanks, roadsides, disturbed areas. Flowering May–Aug. 0–300 m. CR, Est, Sisk, WV. CA, NV, WA; southeast to FL, south to Mexico; Africa, Asia, Australia, Europe, Pacific Islands. Exotic.
Source	Flora of Oregon, volume 2, page 327 Kenton Chambers
Sibling taxa	P. californicum, P. macounii, P. stramineum, P. thermale
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, 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 luteoalbum

weedy cudweed

Habit

Plants annual, 1.5–4 dm.

Stems

floccose-tomentose, not glandular.

Leaves

1.5–5 cm, broadly or narrowly linear to oblanceolate, bases clasping, not decurrent;

surfaces floccose-tomentose, not glandular.

Involucres

3–4 mm.

Phyllaries

in 3–4 series, green or brownish;

surfaces glabrous.

Fruits

0.3–0.5 mm, brown;

pappi white.

Outer florets

130–160;

corolla tips red.

Inner florets

5–10.

=14, 16, 28.

Pseudognaphalium luteoalbum

Distribution

[WildflowerSearch map]

Discussion

Riverbanks, roadsides, disturbed areas. Flowering May–Aug. 0–300 m. CR, Est, Sisk, WV. CA, NV, WA; southeast to FL, south to Mexico; Africa, Asia, Australia, Europe, Pacific Islands. Exotic.

Source

Flora of Oregon, volume 2, page 327
Kenton Chambers

Sibling taxa

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

Web links