Pseudognaphalium macounii |
Pseudognaphalium arizonicum |
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gnaphale de Macoun, Macoun's cudweed, Macoun's everlasting, Macoun's rabbit-tobacco, sticky cudweed, winded cudweed, wing cudweed |
Arizona cudweed, Arizona rabbit-tobacco |
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Habit | Annuals or biennials (often sweetly fragrant), 40–90 cm; taprooted. | Annuals or perennials, 20–50 cm; taprooted. |
Stems | stipitate-glandular throughout (usually persistently lightly white-tomentose distally). |
loosely and densely woolly-tomentose (hairs usually with reddish or purplish cross walls), not glandular. |
Leaf | 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. |
blades linear-oblanceolate to linear-lanceolate, 2–6 cm × 2–7 mm, bases not clasping, decurrent 3–15(–20) mm, margins weakly and narrowly revolute, faces concolor to weakly bicolor, tomentose (hairs commonly with reddish or purplish cross walls), not glandular. |
Involucres | campanulo-subglobose, 4.5–5.5 mm. |
turbinate-campanulate, 5–6 mm. |
Pistillate florets | 47–101(–156). |
(25–)30–49. |
Bisexual florets | 5–12[–21]. |
(1–)3–6. |
Phyllaries | in 4–5 series, stramineous to creamy (hyaline, shiny), ovate to ovate-oblong, glabrous. |
in 4–5 series, usually brownish to tawny, rarely slightly rosy (opaque, shiny), ovate-lanceolate to lanceolate, glabrous. |
Heads | in corymbiform arrays. |
borne singly or in terminal glomerules or corymbiform arrays. |
Cypselae | not ridged, ± papillate-roughened. |
ridged, papillate-roughened. |
Pseudognaphalium macounii |
Pseudognaphalium arizonicum |
|
Phenology | Flowering July–Oct. | Flowering Aug–Sep. |
Habitat | Dry, open habitats, pastures, open woods or edges, roadsides | Open woodlands and chaparral [wide ranging habitats in Mexico, agricultural land to oak and pine woodlands] |
Elevation | 50–2600(–3000) m (200–8500(–9800) ft) | 1600–2300 m (5200–7500 ft) |
Distribution |
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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AZ; TX; w Mexico |
Discussion | 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.) |
Pseudognaphalium arizonicum is superficially similar to P. stramineum in its narrow, concolor leaves; P. stramineum has non-decurrent leaves, light yellowish phyllaries, and more pistillate and bisexual florets. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 19, p. 421. | FNA vol. 19, p. 424. |
Parent taxa | Asteraceae > tribe Gnaphalieae > Pseudognaphalium | Asteraceae > tribe Gnaphalieae > Pseudognaphalium |
Sibling taxa | ||
Synonyms | Gnaphalium macounii, Gnaphalium decurrens | Gnaphalium arizonicum |
Name authority | (Greene) Kartesz: in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 30. (1999) | (A. Gray) Anderberg: Opera Bot. 104: 147. (1991) |
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