Pseudognaphalium luteoalbum |
Pseudognaphalium macounii(synonym of Pseudognaphalium viscosum) |
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weedy cudweed |
sticky cudweed, winged cudweed |
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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. |
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Pseudognaphalium luteoalbum |
Pseudognaphalium macounii |
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Distribution | ||
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 | ||
Synonyms | Gnaphalium macounii, Gnaphalium viscosum, Pseudognaphalium viscosum | |
Web links |
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