Pseudognaphalium luteoalbum |
Pseudognaphalium macounii |
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Jersey cudweed, Jersey rabbit tobacco, red-tip rabbit-tobacco, weedy cudweed |
gnaphale de Macoun, Macoun's cudweed, Macoun's everlasting, Macoun's rabbit-tobacco, sticky cudweed, winded cudweed, wing cudweed |
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Habit | Annuals, 15–40 cm; taprooted or fibrous-rooted. | Annuals or biennials (often sweetly fragrant), 40–90 cm; taprooted. |
Stems | loosely white-tomentose, not glandular. |
stipitate-glandular throughout (usually persistently lightly white-tomentose distally). |
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 (not crowded, internodes mostly 5+ mm) lanceolate to oblanceolate, 3–10 cm × 3–13 mm (distal linear), bases not clasping, decurrent 5–10 mm, margins flat to slightly revolute, faces weakly bicolor, abaxial tomentose, adaxial stipitate-glandular, otherwise glabrescent or glabrous. |
Involucres | broadly campanulate, 3–4 mm. |
campanulo-subglobose, 4.5–5.5 mm. |
Pistillate florets | 135–160. |
47–101(–156). |
Bisexual florets | 5–10 (corollas red-tipped). |
5–12[–21]. |
Phyllaries | in 3–4 series, silvery gray to yellowish (hyaline), ovate to ovate-oblong, glabrous. |
in 4–5 series, stramineous to creamy (hyaline, shiny), ovate to ovate-oblong, glabrous. |
Heads | in terminal glomerules (1–2 cm diam.). |
in corymbiform arrays. |
Cypselae | not evidently ridged (conspicuously dotted with whitish, papilliform hairs; pappus bristles loosely coherent basally, released in clusters or easily fragmented rings). |
not ridged, ± papillate-roughened. |
2n | = 14, 16, 28. |
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Pseudognaphalium luteoalbum |
Pseudognaphalium macounii |
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Phenology | Flowering Apr–Oct. | Flowering July–Oct. |
Habitat | Roadsides, fields and pastures, ditches, streambanks, seasonal ponds, gardens, and other disturbed sites | Dry, open habitats, pastures, open woods or edges, roadsides |
Elevation | 5–2000 m (0–6600 ft) | 50–2600(–3000) m (200–8500(–9800) 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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AZ; CA; CO; CT; ID; IL; IN; MA; ME; MI; MN; MT; NH; NM; NY; OH; OR; PA; SD; TN; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NS; ON; PE; QC; SK; Mexico
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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.) |
Pseudognaphalium macounii is recognized by its stipitate-glandular, proximally glabrescent stems, bicolor and decurrent leaves, relatively large and many-flowered heads, and hyaline, shiny phyllaries. Reports of P. macounii from Texas are based on specimens of P. viscosum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 19, p. 418. | FNA vol. 19, p. 421. |
Parent taxa | Asteraceae > tribe Gnaphalieae > Pseudognaphalium | Asteraceae > tribe Gnaphalieae > Pseudognaphalium |
Sibling taxa | ||
Synonyms | Gnaphalium luteoalbum | Gnaphalium macounii, Gnaphalium decurrens |
Name authority | (Linnaeus) Hilliard & B. L. Burtt: Bot. J. Linn. Soc. 82: 206. (1981) | (Greene) Kartesz: in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 30. (1999) |
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