Burke: Pseudognaphalium luteoalbum vs. Pseudognaphalium stramineum

	Pseudognaphalium luteoalbum	Pseudognaphalium stramineum
	weedy cudweed, red-tip rabbit-tobacco, jersey rabbit tobacco	cotton batting cudweed
Habit	Woolly annual, simple or moderately branched, up to 4 dm. tall.	Woolly annual or biennial, the several stems 2-7 dm. tall.
Leaves	Lowermost leaves oblanceolate, up to 4.5 cm. long and 1 cm. wide, the others progressively reduced upward.	Leaves alternate, numerous, broadly oblanceolate or occasionally oblong or lanceolate, up to 10 cm. long, auriculate at the base.
Flowers	Heads in several tight clusters, in a close inflorescence; involucre 3.5-5 mm. high, woolly only at the base, its bracts translucent, light brown; corollas all tubular, whitish, the outer slender and pistillate, the few inner coarser and perfect; pappus of capillary bristles united at base.	Heads numerous, grouped in one or a few dense glomerules, the involucres with a yellowish cast, 4-7 mm. high, woolly at the base; corollas all tubular, whitish, the outer slender and pistillate, the few inner ones coarser and perfect; pappus of capillary bristles, distinct, falling separately.
Fruits	Achenes small, nerveless.	Achenes nerveless.

	Pseudognaphalium luteoalbum	Pseudognaphalium stramineum
Flowering time	June-October	June-October
Habitat	Roadsides, fields, wastelots, and other disturbed areas at low elevations.	Open, usually moist places, often in disturbed soil.
Distribution	Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to California, east across the southern U.S. to Florida, also in New York. [WildflowerSearch map]	Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to the Great Plains of the U.S.; also in scattered states along the Atlantic Coast. [WildflowerSearch map] [BONAP county map]
Origin	Introduced from Eurasia	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	P. californicum, P. macounii, P. stramineum, P. thermale	P. californicum, P. luteoalbum, P. macounii, 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	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 stramineum

weedy cudweed, red-tip rabbit-tobacco, jersey rabbit tobacco

cotton batting cudweed

Habit

Woolly annual, simple or moderately branched, up to 4 dm. tall.

Woolly annual or biennial, the several stems 2-7 dm. tall.

Leaves

Lowermost leaves oblanceolate, up to 4.5 cm. long and 1 cm. wide, the others progressively reduced upward.

Leaves alternate, numerous, broadly oblanceolate or occasionally oblong or lanceolate, up to 10 cm. long, auriculate at the base.

Flowers

Heads in several tight clusters, in a close inflorescence;

involucre 3.5-5 mm. high, woolly only at the base, its bracts translucent, light brown;

corollas all tubular, whitish, the outer slender and pistillate, the few inner coarser and perfect;

pappus of capillary bristles united at base.

Heads numerous, grouped in one or a few dense glomerules, the involucres with a yellowish cast, 4-7 mm. high, woolly at the base; corollas all tubular, whitish, the outer slender and pistillate, the few inner ones coarser and perfect;

pappus of capillary bristles, distinct, falling separately.

Fruits

Achenes small, nerveless.

Achenes nerveless.

Pseudognaphalium luteoalbum

Pseudognaphalium stramineum

Flowering time

June-October

Habitat

Roadsides, fields, wastelots, and other disturbed areas at low elevations.

Open, usually moist places, often in disturbed soil.

Distribution

Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to California, east across the southern U.S. to Florida, also in New York.

[WildflowerSearch map]

Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to the Great Plains of the U.S.; also in scattered states along the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]

Origin

Introduced from Eurasia

Native

Conservation status

Not of concern

Sibling taxa

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

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

Web links