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sticky rabbit-tobacco, wing cudweed

blunt-leaf rabbit-tobacco, eastern rabbit-tobacco, gnaphale à feuilles obtuses, old field balsam, rabbit-tobacco

Habit Annuals (viscid and unpleasantly aromatic), 30–100 cm; taprooted. Annuals or winter annuals (sometimes faintly fragrant), (10–)30–100 cm; taprooted.
Stems

persistently white-tomentose and stipitate-glandular.

white-tomentose, sometimes lightly so, usually not glandular, rarely glandular near bases.

Leaf

blades (crowded, internodes mostly 1–3, sometimes to 10, mm) linear-lanceolate, (2–)4–8 cm × 3–10 mm, bases not clasping, usually (at least the proximal) decurrent 3–10 mm, margins strongly revolute to revolute-undulate, faces bicolor, abaxial densely white-tomentose, adaxial densely stipitate-glandular.

blades linear-lanceolate to elliptic or oblanceolate, 2.5–10 cm × 2–10 mm (relatively even-sized), bases not clasping, not decurrent, margins flat, faces bicolor, abaxial white-tomentose, adaxial green, usually glabrous or slightly glandular, sometimes with persistent light tomentum.

Involucres

campanulate, 5–6 mm.

broadly campanulate, 5–7 mm.

Pistillate florets

200–250.

38–96.

Bisexual florets

(13–)16–29.

4–8(–11).

Phyllaries

in 5–6 series, tawny-silvery to silvery white (hyaline, shiny), ovate-lanceolate (not keeled or thickened along midribs, not apiculate), glabrous.

in 4–6 series, white (opaque, usually shiny, sometimes dull), ovate to ovate-oblong, glabrous or tomentose (bases).

Heads

in corymbiform arrays.

in corymbiform (sometimes rounded to elongate) arrays.

Cypselae

not ridged, papillate-roughened.

ridged, smooth.

2n

= 28.

Pseudognaphalium viscosum

Pseudognaphalium obtusifolium

Phenology Flowering Jul–Sep. Flowering Aug–Oct.
Habitat Rocky open sites, roadsides Open sites, often disturbed, roadsides, fields, pastures, open woods, in various soils, most abundantly in sand
Elevation 1400–1800 m (4600–5900 ft) 5–200 m (0–700 ft)
Distribution
from FNA
TX; Mexico; Central America
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; CT; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; ME; MI; MN; MO; MS; NC; NE; NH; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; WV; NB; NS; ON; PE; QC
[WildflowerSearch map]
[BONAP county map]
Discussion

Reports of Pseudognaphalium viscosum from the flora for states other than Texas are based on plants of P. macounii. Pseudognaphalium viscosum is similar to P. leucocephalum, which has broader and white-opaque phyllaries, longer bisexual corollas, and smooth cypselae.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 19, p. 422. FNA vol. 19, p. 420.
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. microcephalum, P. obtusifolium, P. pringlei, P. ramosissimum, P. roseum, P. saxicola, P. stramineum, P. thermale
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. pringlei, P. ramosissimum, P. roseum, P. saxicola, P. stramineum, P. thermale, P. viscosum
Synonyms Gnaphalium viscosum Gnaphalium obtusifolium, Gnaphalium obtusifolium var. praecox
Name authority (Kunth) Anderberg: Opera Bot. 104: 148. (1991) (Linnaeus) Hilliard & B. L. Burtt: Bot. J. Linn. Soc. 82: 205. (1981)
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