The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

weedy cudweed

sticky cudweed, winged cudweed

Habit Plants annual, 1.5–4 dm. Plants annual or biennial, 4–10 dm.
Stems

floccose-tomentose, not glandular.

pilose- or floccose-pubescent, stalked-glandular.

Leaves

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

surfaces floccose-tomentose, not glandular.

2–10 cm, linear to lanceolate or oblanceolate, bases decurrent;

surfaces contrasting in color, abaxially gray-tomentose, sometimes stalked-glandular on midveins, adaxially green, glabrous or scarcely tomentose, usually stalked-glandular.

Involucres

3–4 mm.

4.5–6 mm.

Phyllaries

in 3–4 series, green or brownish;

surfaces glabrous.

in 4–5 series, white or brownish;

surfaces glabrous.

Fruits

0.3–0.5 mm, brown;

pappi white.

0.4–0.5 mm, brown;

pappi white.

Outer florets

130–160;

corolla tips red.

50–100;

corolla tips yellow.

Inner florets

5–10.

5–12.

2n

=14, 16, 28.

Pseudognaphalium luteoalbum

Pseudognaphalium macounii

Distribution
[WildflowerSearch map]
[WildflowerSearch map]
[BONAP county 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.

Open woodlands, grasslands, riverbanks, roadsides. Flowering Jul–Sep. 1000–2000 m. BW, Casc. CA, ID, WA; north to British Columbia, northeast to Nova Scotia, east to MA, southeast to NM, south to Mexico. Native.

Source Flora of Oregon, volume 2, page 327
Kenton Chambers
Flora of Oregon, volume 2, page 327
Kenton Chambers
Sibling taxa
P. californicum, P. macounii, P. stramineum, P. thermale
P. californicum, P. luteoalbum, P. macounii, P. stramineum, P. thermale
Synonyms Gnaphalium macounii, Gnaphalium viscosum, Pseudognaphalium viscosum
Web links