Pseudognaphalium luteoalbum |
Pseudognaphalium obtusifolium |
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Jersey cudweed, Jersey rabbit tobacco, red-tip rabbit-tobacco, weedy cudweed |
blunt-leaf rabbit-tobacco, eastern rabbit-tobacco, gnaphale à feuilles obtuses, old field balsam, rabbit-tobacco |
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Habit | Annuals, 15–40 cm; taprooted or fibrous-rooted. | Annuals or winter annuals (sometimes faintly fragrant), (10–)30–100 cm; taprooted. |
Stems | loosely white-tomentose, not glandular. |
white-tomentose, sometimes lightly so, usually not glandular, rarely glandular near bases. |
Leaf | blades (crowded, internodes 1–5, sometimes to 10 mm) narrowly obovate to subspatulate, 1–3(–6) cm × 2–8 mm (distal smaller, oblanceolate to narrowly oblong or linear), bases subclasping, usually decurrent 1–2 mm, margins weakly revolute, faces mostly concolor to weakly bicolor, abaxial gray-tomentose, adaxial usually gray-tomentose, sometimes glabrescent, neither glandular. |
blades linear-lanceolate to elliptic or oblanceolate, 2.5–10 cm × 2–10 mm (relatively even-sized), bases not clasping, not decurrent, margins flat, faces bicolor, abaxial white-tomentose, adaxial green, usually glabrous or slightly glandular, sometimes with persistent light tomentum. |
Involucres | broadly campanulate, 3–4 mm. |
broadly campanulate, 5–7 mm. |
Pistillate florets | 135–160. |
38–96. |
Bisexual florets | 5–10 (corollas red-tipped). |
4–8(–11). |
Phyllaries | in 3–4 series, silvery gray to yellowish (hyaline), ovate to ovate-oblong, glabrous. |
in 4–6 series, white (opaque, usually shiny, sometimes dull), ovate to ovate-oblong, glabrous or tomentose (bases). |
Heads | in terminal glomerules (1–2 cm diam.). |
in corymbiform (sometimes rounded to elongate) arrays. |
Cypselae | not evidently ridged (conspicuously dotted with whitish, papilliform hairs; pappus bristles loosely coherent basally, released in clusters or easily fragmented rings). |
ridged, smooth. |
2n | = 14, 16, 28. |
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Pseudognaphalium luteoalbum |
Pseudognaphalium obtusifolium |
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Phenology | Flowering Apr–Oct. | Flowering Aug–Oct. |
Habitat | Roadsides, fields and pastures, ditches, streambanks, seasonal ponds, gardens, and other disturbed sites | Open sites, often disturbed, roadsides, fields, pastures, open woods, in various soils, most abundantly in sand |
Elevation | 5–2000 m (0–6600 ft) | 5–200 m (0–700 ft) |
Distribution |
AR; AZ; CA; FL; LA; NM; NV; NY; OR; TX; UT; WA; Mexico; Europe; Asia; Africa; Pacific Islands (New Zealand); Australia [Introduced in North America]
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AL; AR; CT; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; ME; MI; MN; MO; MS; NC; NE; NH; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; WV; NB; NS; ON; PE; QC
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Discussion | Pseudognaphalium luteoalbum is native to Eurasia. It is similar in overall habit to P. stramineum but distinctive in its larger heads and red-tipped corollas (visible through the translucent phyllaries). Cypselae of P. luteoalbum have papilliform hairs; cypselae of other North American species of Pseudognaphalium are glabrous. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 19, p. 418. | FNA vol. 19, p. 420. |
Parent taxa | Asteraceae > tribe Gnaphalieae > Pseudognaphalium | Asteraceae > tribe Gnaphalieae > Pseudognaphalium |
Sibling taxa | ||
Synonyms | Gnaphalium luteoalbum | Gnaphalium obtusifolium, Gnaphalium obtusifolium var. praecox |
Name authority | (Linnaeus) Hilliard & B. L. Burtt: Bot. J. Linn. Soc. 82: 206. (1981) | (Linnaeus) Hilliard & B. L. Burtt: Bot. J. Linn. Soc. 82: 205. (1981) |
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