Flora of North America species comparison

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Pseudognaphalium microcephalum

Pseudognaphalium jaliscense

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

Jalisco rabbit-tobacco
Habit Perennials, (30–)50–100 cm; taprooted. Annuals or biennials, 30–70 cm; taprooted.
Stems

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

(branched among heads) densely and persistently loosely woolly-tomentose-sericeous, not glandular.
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 lanceolate to nearly linear, 3–10 cm × 3–6 mm, bases not clasping, decurrent 4–8 mm, margins flat or slightly revolute, faces concolor, tomentose-sericeous (bases of hairs enlarged), sessile-glandular beneath tomentum.
Involucres

turbinate-campanulate, 5–6 mm.

campanulate, 5–6 mm.
Pistillate florets

29–49.

(80–)115[–180].
Bisexual florets

5–9.

(6–)8–12[–30].
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 5–6(–7) series, white (opaque, dull), ovate or elliptic (keeled, apiculate), glabrous.
Heads

in loose, corymbiform arrays.

in corymbiform arrays.
Cypselae

ridged, smooth to weakly papillate-roughened.

weakly ridged, papillate-roughened or smooth.
2n

= 28.

Pseudognaphalium microcephalum

Pseudognaphalium jaliscense
Phenology Flowering (Apr–)Jun–Aug(–Nov). Flowering Jul–Oct.
Habitat Grassy hillsides, gravelly canyon bottoms, chaparral, coastal sage scrub Grasslands, chaparral, openings in oak-pine-juniper, oak, and ponderosa pine woodlands, roadsides, disturbed sites
Elevation 50–900(–1800) m (200–3000(–5900) ft) 1500–2300 m (4900–7500 ft)
Distribution
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
from FNA
AZ; CO; NE; NM; TX; Mexico
[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.)

Pseudognaphalium jaliscense is recognized by its relatively long, narrow, concolor to weakly bicolor leaves with non-clasping, short-decurrent bases, relatively large heads with white, opaque, dull phyllaries, and relatively large numbers of pistillate and bisexual florets. Counts of pistillate and bisexual florets from the United States collections are mostly 90–115 and (6–)8–12 (fewer than in Mexico).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 419. 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. 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. canescens, P. helleri, 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 jaliscense
Name authority (Nuttall) Anderberg: Opera Bot. 104: 147. (1991) (Greenman) 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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