Flora of North America species comparison

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Pseudognaphalium macounii

Pseudognaphalium beneolens

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

cudweed, fragrant rabbit-tobacco, Wright's cudweed
Habit Annuals or biennials (often sweetly fragrant), 40–90 cm; taprooted. Annuals or short-lived perennials, 30–80(–110) cm; taprooted.
Stems

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

persistently tomentose, 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 mostly linear, 3–6 cm × 1.5–3.5 mm (sometimes smaller distally), bases not clasping, decurrent 5–15 mm, margins flat, faces concolor, loosely tomentose, not glandular.
Involucres

campanulo-subglobose, 4.5–5.5 mm.

turbinate-campanulate, 5–6 mm.
Pistillate florets

47–101(–156).

(39–)44–69.
Bisexual florets

5–12[–21].

5–8(–11).
Phyllaries

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

in (4–)5–6(–7) series, white (opaque, dull to shiny), ovate to ovate-oblong (inner usually with filiform keel and slight apiculum), glabrous.
Heads

in corymbiform arrays.

usually in loose, paniculiform arrays.
Cypselae

not ridged, ± papillate-roughened.

ridged, smooth or weakly papillate-roughened.
2n

= 14.

Pseudognaphalium macounii

Pseudognaphalium beneolens
Phenology Flowering July–Oct. Flowering (Apr–)Jun–Oct.
Habitat Dry, open habitats, pastures, open woods or edges, roadsides Dry, open slopes and ridges, streambeds, road banks and other disturbed sites, sandy flats, dunes, coastal sage scrub, chaparral, yellow pine, foothill pine, blue oak woodland
Elevation 50–2600(–3000) m (200–8500(–9800) ft) (1–)50–800(–2000) m ((0–)200–2600(–6600) 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
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from FNA
CA; Mexico (Baja California)
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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 beneolens differs from P. thermale in its leaves linear throughout, heads usually in elongate, paniculiform arrays, larger heads (greater numbers of phyllaries in greater numbers of series) with phyllaries more opaque and duller, and greater numbers of bisexual florets. The cauline leaves of P. beneolens tend to become curving-coiling. In areas of sympatry, habitats of P. beneolens are characteristically at lower elevations than those of P. thermale.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 421. FNA vol. 19, p. 419.
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. 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 beneolens, Gnaphalium canescens subsp. beneolens, P. canescens subsp. beneolens
Name authority (Greene) Kartesz: in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 30. (1999) (Davidson) Anderberg: Opera Bot. 104: 147. (1991)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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