OregonFlora: Pseudognaphalium microcephalum vs. Pseudognaphalium stramineum

	Pseudognaphalium microcephalum	Pseudognaphalium stramineum
		cotton batting cudweed, cotton batting plant
Habit		Plants annual or biennial, 1–8 dm.
Stems		floccose-tomentose, not glandular.
Leaves		1.5–12 cm, linear to lanceolate or oblanceolate, bases clasping, usually not decurrent; surfaces floccose-tomentose, not glandular.
Involucres		4–6 mm.
Phyllaries		in 4–5 series, white or brownish; surfaces glabrous.
Fruits		0.4–0.6 mm, brown; pappi brownish.
Outer florets		150–200; corolla tips yellow.
Inner florets		10–30.
2n		=28.

	Pseudognaphalium microcephalum	Pseudognaphalium stramineum
Distribution	[WildflowerSearch map]	[WildflowerSearch map] [BONAP county map]
Discussion		Shrublands, grasslands, ocean bluffs, beaches, dunes, marshes, riverbanks, roadsides, disturbed areas. Flowering Feb–Oct. 0–1000 m. Casc, Col, CR, ECas, Est, Lava, Sisk, WV. CA, ID, NV, WA; north to British Columbia, northeast to MT, east to NE, southeast to TX, south to Mexico, NC, NY, SC, VA; South America. Native.
Source		Flora of Oregon, volume 2, page 327 Kenton Chambers
Sibling taxa	P. californicum, P. luteoalbum, P. macounii, P. stramineum, P. thermale	P. californicum, P. luteoalbum, P. macounii, P. thermale
Synonyms		Gnaphalium chilense, Gnaphalium stramineum
Web links	Local floras: CA, OR 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	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 microcephalum

Pseudognaphalium stramineum

cotton batting cudweed, cotton batting plant

Habit

Plants annual or biennial, 1–8 dm.

Stems

floccose-tomentose, not glandular.

Leaves

1.5–12 cm, linear to lanceolate or oblanceolate, bases clasping, usually not decurrent;

surfaces floccose-tomentose, not glandular.

Involucres

4–6 mm.

Phyllaries

in 4–5 series, white or brownish;

surfaces glabrous.

Fruits

0.4–0.6 mm, brown;

pappi brownish.

Outer florets

150–200;

corolla tips yellow.

Inner florets

10–30.

=28.

Pseudognaphalium microcephalum

Pseudognaphalium stramineum

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

Shrublands, grasslands, ocean bluffs, beaches, dunes, marshes, riverbanks, roadsides, disturbed areas. Flowering Feb–Oct. 0–1000 m. Casc, Col, CR, ECas, Est, Lava, Sisk, WV. CA, ID, NV, WA; north to British Columbia, northeast to MT, east to NE, southeast to TX, south to Mexico, NC, NY, SC, VA; South America. Native.

Source

Flora of Oregon, volume 2, page 327
Kenton Chambers

Sibling taxa

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

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

Synonyms

Gnaphalium chilense, Gnaphalium stramineum

Web links