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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

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
from FNA
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
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; TX; w Mexico
[BONAP county map]
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
P. arizonicum, P. austrotexanum, P. beneolens, P. biolettii, P. californicum, P. canescens, P. helleri, P. jaliscense, P. leucocephalum, P. luteoalbum, P. micradenium, P. microcephalum, P. obtusifolium, P. pringlei, P. ramosissimum, P. roseum, P. saxicola, P. stramineum, P. thermale, P. viscosum
P. austrotexanum, P. beneolens, P. biolettii, P. californicum, P. canescens, P. helleri, P. jaliscense, P. leucocephalum, P. luteoalbum, P. macounii, P. micradenium, P. microcephalum, P. obtusifolium, P. pringlei, P. ramosissimum, P. roseum, P. saxicola, P. stramineum, P. thermale, P. viscosum
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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