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| October 2007 at roadside |
October 2007 at roadside |
October 2007 at roadside |
| Family | Asteraceae (alt. Compositae) |
| Scientific name | Gamochaeta pensylvanica (Willdenow) Cabrera |
| Synonyms | Gnaphalium pensylvanicum Willdenow; Gnaphalium peregrinum Fernald; Gnaphalium purpureum L. var. spathulatum Baker; Gnaphalium spathulatum Lamarck |
| Common name | (Japanese common name) chichi-ko-gusa modoki [false father and children weed] |
| (English common name) Pennsylvania cudweed, Pennsylvania everlasting | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) [native] USA, Mexico, Costa Rica, Guatemala, Honduras, Nicaragua, Brazil, Argentina, Paraguay, Uruguay | |
| Chromosomal number | 2n=28 |
| Description | Plants 20-60cm. Leaves 2-8cm length, 5-12mm width. Flowers involucres 4-5.5mm, flowering in April to November. Annual or winter annual plants. |
| Reference | Gamochaeta pensylvanica (Willd.) Cabrera |
| Gamochaeta pensylvanica (Willdenow) Cabrera | |
| Gamochaeta pensylvanica (Willd.) Cabrera | |
| Gamochaeta pensylvanica (Willd.) Cabrera | |
| Note | Naturalized plants (introduced in early 20th). |
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| October 2007 at roadside |
October 2007 at roadside |
October 2007 at roadside |
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| October 2007 at roadside |
