Pseudognaphalium macounii |
Pseudognaphalium micradenium |
|
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gnaphale de Macoun, Macoun's cudweed, Macoun's everlasting, Macoun's rabbit-tobacco, sticky cudweed, winded cudweed, wing cudweed |
delicate rabbit-tobacco, Weatherby's rabbit-tobacco |
|
Habit | Annuals or biennials (often sweetly fragrant), 40–90 cm; taprooted. | Annuals (fragrant), 15–60 cm; taprooted or fibrous-rooted. |
Stems | stipitate-glandular throughout (usually persistently lightly white-tomentose distally). |
glandular-puberulent (without persistent tomentum), stipitate glands 0.1–0.2 mm, stalks narrower than gland widths. |
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 to linear-lanceolate or linear-oblanceolate, 1.5–5.5 cm × 1.5–10 mm, bases not clasping, not decurrent, margins flat, faces bicolor, abaxial white to gray, tomentose, adaxial green, both minutely stipitate-glandular. |
Involucres | campanulo-subglobose, 4.5–5.5 mm. |
turbinate-campanulate, 5–6 mm. |
Pistillate florets | 47–101(–156). |
47–78. |
Bisexual florets | 5–12[–21]. |
(7–)11–20. |
Phyllaries | in 4–5 series, stramineous to creamy (hyaline, shiny), ovate to ovate-oblong, glabrous. |
in 4–6 series, white to tawny white (hyaline, shiny), narrowly ovate to oblong, glabrous. |
Heads | in corymbiform arrays. |
in corymbiform arrays. |
Cypselae | not ridged, ± papillate-roughened. |
ridged, smooth. |
Pseudognaphalium macounii |
Pseudognaphalium micradenium |
|
Phenology | Flowering July–Oct. | Flowering Sep–Oct. |
Habitat | Dry, open habitats, pastures, open woods or edges, roadsides | Dry woods and openings, roadsides |
Elevation | 50–2600(–3000) m (200–8500(–9800) ft) | 10–600 m (0–2000 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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GA; IN; KY; MA; MD; ME; MI; MN; MO; NC; NH; NJ; NY; PA; SC; TN; VA; WI |
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 micradenium has a more northern and Appalachian distribution than P. helleri. A report of P. micradenium for Louisiana probably was based on specimens of P. helleri. The two species differ in vestiture and other features; stems of P. micradenium are more slender than those of its close relatives. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 19, p. 421. | FNA vol. 19, p. 421. |
Parent taxa | Asteraceae > tribe Gnaphalieae > Pseudognaphalium | Asteraceae > tribe Gnaphalieae > Pseudognaphalium |
Sibling taxa | ||
Synonyms | Gnaphalium macounii, Gnaphalium decurrens | Gnaphalium obtusifolium var. micradenium, Gnaphalium helleri var. micradenium, P. helleri subsp. micradenium |
Name authority | (Greene) Kartesz: in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 30. (1999) | (Weatherby) G. L. Nesom: Sida 19: 618. (2001) |
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