Flora of North America species comparison

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Pseudognaphalium microcephalum

Pseudognaphalium biolettii

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

Bioletti's rabbit-tobacco, two-color rabbit-tobacco, two-tone everlasting
Habit Perennials, (30–)50–100 cm; taprooted. Perennials (fragrant), 20–70(–120) cm; taprooted.
Stems

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

(sometimes lignescent near bases) proximally glabrescent, distally persistently tomentose, at least in the region of the heads, 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 (not crowded, internodes mostly 5+ mm), oblong-oblanceolate to oblanceolate (the distal lanceolate), 1.5–5(–8) cm × 4–10(–15) mm, bases auriculate-clasping, not decurrent, margins flat or slightly revolute, often undulate, faces bicolor (at least basal and proximal cauline), abaxial white-tomentose, adaxial bright green and ± densely glandular.
Involucres

turbinate-campanulate, 5–6 mm.

turbinate-campanulate, 5–5.5(–6) mm.
Pistillate florets

29–49.

41–73.
Bisexual florets

5–9.

5–13.
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 4–5 series, white or sometimes slightly pinkish (opaque, shiny), ovate to oblong-ovate or oblong (often longitudinally wrinkled or grooved), glabrous.
Heads

in loose, corymbiform arrays.

in corymbiform arrays.
Cypselae

ridged, smooth to weakly papillate-roughened.

ridged, smooth.
2n

= 28.

Pseudognaphalium microcephalum

Pseudognaphalium biolettii
Phenology Flowering (Apr–)Jun–Aug(–Nov). Flowering Apr–Jun(–Oct).
Habitat Grassy hillsides, gravelly canyon bottoms, chaparral, coastal sage scrub Rocky slopes, roadsides, sandy plains with Larrea, coastal strand, matorral, and chaparral
Elevation 50–900(–1800) m (200–3000(–5900) ft) 5–600(–1200) m (0–2000(–3900) ft)
Distribution
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
from FNA
CA; Mexico (Baja California, Baja California Sur)
[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.)
Source FNA vol. 19, p. 419. FNA vol. 19, p. 423.
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. 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 microcephalum, Gnaphalium albidum, Gnaphalium canescens subsp. microcephalum, P. canescens subsp. microcephalum Gnaphalium bicolor
Name authority (Nuttall) Anderberg: Opera Bot. 104: 147. (1991) 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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