Flora of North America species comparison

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Pseudognaphalium microcephalum

Pseudognaphalium canescens

felt-leaf everlasting, San Diego rabbit-tobacco, Wright's cudweed

slender cudweed, Wright's cudweed, Wright's rabbit-tobacco
Habit Perennials, (30–)50–100 cm; taprooted. Annuals or perennials, 20–70(–100+) cm; taprooted.
Stems

persistently grayish tomentose, not glandular, (3–5 mm diam. near bases).

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

blades narrowly oblanceolate, 2–5(–8) cm × 5–10(–18) mm (gradually smaller distally, becoming lanceolate), bases not clasping, not decurrent, margins flat, faces weakly bicolor, tomentose (adaxial less densely), not glandular.

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

turbinate-campanulate, 5–6 mm.

turbinate-campanulate, 4–5 mm.
Pistillate florets

29–49.

(16–)24–44.
Bisexual florets

5–9.

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

in 4–5 series, white (opaque, dull), ovate to oblong-ovate (inner narrower, all usually with filiform but definitely thickened keel and slight apiculum), tomentose (at least bases).

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

in loose, corymbiform arrays.

usually in loose, corymbiform arrays.
Cypselae

ridged, smooth to weakly papillate-roughened.

ridged, weakly papillate-roughened.
2n

= 28.

= 28.

Pseudognaphalium microcephalum

Pseudognaphalium canescens
Phenology Flowering (Apr–)Jun–Aug(–Nov). Flowering Aug–Nov(–Jan).
Habitat Grassy hillsides, gravelly canyon bottoms, chaparral, coastal sage scrub Lava beds, rocky sites, grasslands, oak, pine-oak, and pine woodlands
Elevation 50–900(–1800) m (200–3000(–5900) ft) 1100–2500(–2700) m (3600–8200(–8900) ft)
Distribution
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
from FNA
AZ; CA; CO; NM; OK; TX; UT; Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Pseudognaphalium microcephalum is characterized by stems commonly stiffly erect and slightly zigzag distally, relatively thick (3–5 mm diam. near bases), and closely grayish tomentose, leaves oblanceolate, sessile, sometimes clasping, not decurrent, and weakly bicolor, and heads usually in open, corymbiform arrays.

(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. 419. 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. macounii, P. micradenium, 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 microcephalum, Gnaphalium albidum, Gnaphalium canescens subsp. microcephalum, P. canescens subsp. microcephalum Gnaphalium canescens, Gnaphalium sonorae, Gnaphalium texanum, Gnaphalium viridulum, Gnaphalium wrightii
Name authority (Nuttall) Anderberg: Opera Bot. 104: 147. (1991) (de Candolle) 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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