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gnaphale de Macoun, Macoun's cudweed, Macoun's everlasting, Macoun's rabbit-tobacco, sticky cudweed, winded cudweed, wing cudweed

slender cudweed, Wright's cudweed, Wright's rabbit-tobacco

Habit Annuals or biennials (often sweetly fragrant), 40–90 cm; taprooted. Annuals or perennials, 20–70(–100+) cm; taprooted.
Stems

stipitate-glandular throughout (usually persistently lightly white-tomentose distally).

persistently tomentose, not glandular (2–3 mm diam. near bases).

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 narrowly to broadly oblanceolate, mostly 2–4(–5) cm × 2–8(–15) mm, bases not clasping, not decurrent, margins flat, faces weakly bicolor, tomentose (adaxial less densely tomentose, sometimes sessile-glandular beneath tomentum).

Involucres

campanulo-subglobose, 4.5–5.5 mm.

turbinate-campanulate, 4–5 mm.

Pistillate florets

47–101(–156).

(16–)24–44.

Bisexual florets

5–12[–21].

(1–)2–5(–6), 5–6 more common in northern part of range.

Phyllaries

in 4–5 series, stramineous to creamy (hyaline, shiny), ovate to ovate-oblong, glabrous.

in 3–4 series, white (opaque to hyaline, dull to shiny), narrowly ovate-lanceolate, glabrous.

Heads

in corymbiform arrays.

usually in loose, corymbiform arrays.

Cypselae

not ridged, ± papillate-roughened.

ridged, weakly papillate-roughened.

2n

= 28.

Pseudognaphalium macounii

Pseudognaphalium canescens

Phenology Flowering July–Oct. Flowering Aug–Nov(–Jan).
Habitat Dry, open habitats, pastures, open woods or edges, roadsides Lava beds, rocky sites, grasslands, oak, pine-oak, and pine woodlands
Elevation 50–2600(–3000) m (200–8500(–9800) ft) 1100–2500(–2700) m (3600–8200(–8900) 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; CA; CO; NM; OK; TX; UT; Mexico
[WildflowerSearch map]
[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.)

Most plants of Pseudognaphalium canescens produce white, opaque, keeled, apiculate phyllaries; in the southern portion of its range (Jalisco southeastward) and scattered localities elsewhere, the phyllaries may be more hyaline and lack a pronounced keel and apiculum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 19, p. 421. FNA vol. 19, p. 418.
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. arizonicum, P. austrotexanum, P. beneolens, P. biolettii, P. californicum, 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 canescens, Gnaphalium sonorae, Gnaphalium texanum, Gnaphalium viridulum, Gnaphalium wrightii
Name authority (Greene) Kartesz: in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 30. (1999) (de Candolle) Anderberg: Opera Bot. 104: 147. (1991)
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