Flora of North America species comparison

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Pseudognaphalium microcephalum

Pseudognaphalium pringlei

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

Pringle's cudweed, Pringle's rabbit-tobacco
Habit Perennials, (30–)50–100 cm; taprooted. Annuals or perennials, 30–80 cm; taprooted.
Stems

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

lightly white-tomentose and/or glabrescent and green, minutely stipitate- or sessile-glandular beneath other induments.
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 (not crowded, internodes mostly 5+ mm) oblanceolate-spatulate to obovate- or petiolate-spatulate, 5–10 cm × 10–20 mm (distal oblong to lanceolate or oblanceolate, 2–8 cm, slightly smaller), bases not clasping and decurrent 3–20 mm or clasping and decurrent 1–3 mm or not decurrent at all, margins flat to slightly revolute, faces bicolor, abaxial thinly white-tomentose, adaxial minutely stipitate- or sessile-glandular, otherwise glabrous or glabrate (bases of hairs persistent, enlarged).
Involucres

turbinate-campanulate, 5–6 mm.

campanulate to turbinate, 3.5–4 mm.
Pistillate florets

29–49.

15–40(–64).
Bisexual florets

5–9.

(1–)2–6.
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 2–3 series, silvery white to tawny, oblong to oblong-ovate, (hyaline, shiny), glabrous.
Heads

in loose, corymbiform arrays.

in loose, corymbiform arrays.
Cypselae

ridged, smooth to weakly papillate-roughened.

ridged, papillate-roughened.
2n

= 28.

Pseudognaphalium microcephalum

Pseudognaphalium pringlei
Phenology Flowering (Apr–)Jun–Aug(–Nov). Flowering (Aug–)Sep–Nov.
Habitat Grassy hillsides, gravelly canyon bottoms, chaparral, coastal sage scrub Rock outcrops and slopes, crevices and thin soil on cliffs, oak or oak-pine woodlands
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; NM; TX; Mexico (Chihuahua, Durango, Sonora)
[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.)
Source FNA vol. 19, p. 419. FNA vol. 19, p. 422.
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. jaliscense, P. leucocephalum, P. luteoalbum, P. macounii, P. micradenium, P. microcephalum, P. obtusifolium, 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 pringlei
Name authority (Nuttall) Anderberg: Opera Bot. 104: 147. (1991) (A. Gray) 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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