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

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

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

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

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

Leaf

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).

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

turbinate-campanulate, 4–5 mm.

campanulo-subglobose, 4.5–5.5 mm.

Pistillate florets

(16–)24–44.

47–101(–156).

Bisexual florets

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

5–12[–21].

Phyllaries

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

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

Heads

usually in loose, corymbiform arrays.

in corymbiform arrays.

Cypselae

ridged, weakly papillate-roughened.

not ridged, ± papillate-roughened.

2n

= 28.

Pseudognaphalium canescens

Pseudognaphalium macounii

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

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.)

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
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
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
Synonyms Gnaphalium canescens, Gnaphalium sonorae, Gnaphalium texanum, Gnaphalium viridulum, Gnaphalium wrightii Gnaphalium macounii, Gnaphalium decurrens
Name authority (de Candolle) Anderberg: Opera Bot. 104: 147. (1991) (Greene) Kartesz: in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 30. (1999)
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