Flora of North America species comparison

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Pseudognaphalium helleri

Heller's cudweed, Heller's rabbit-tobacco
Habit Annuals (fragrant), 30–100 cm; fibrous-rooted (roots relatively thick and lignescent).
Stems

greenish, glandular-villous (without persistent tomentum, stipitate glands mostly 0.3–1 mm, often variable, stalks broadened toward bases, about equaling gland widths).
Leaf

blades mostly oblong-lanceolate, 2.5–7 cm × 4–20 mm, bases not clasping, not decurrent, margins flat, faces bicolor, abaxial white to gray with lightly persistent tomentum, adaxial green, both minutely stipitate-glandular.
Involucres

campanulate, 6–7 mm.
Pistillate florets

83–107.
Bisexual florets

9–15.
Phyllaries

in 4–6 series, white (opaque, shiny), ovate to ovate-oblong or oblong, ± tomentose.
Heads

in corymbiform arrays.
Cypselae

ridged, smooth.

Pseudognaphalium helleri
Phenology Flowering Sep–Oct(–Nov).
Habitat Dry woods and openings, clay and sandy clay, sand hills
Elevation 10–300 m (0–1000 ft)
Distribution
from FNA
AL; AR; FL; GA; LA; MS; NC; OK; SC; TN; TX; VA
[WildflowerSearch map]
[BONAP county map]
Discussion

Pseudognaphalium helleri and P. micradenium are similar to P. obtusifolium in most features; both differ in their glandular stems without the persistent whitish tomentum of P. obtusifolium.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 421.
Parent taxa Asteraceae > tribe Gnaphalieae > Pseudognaphalium
Sibling taxa
P. arizonicum, P. austrotexanum, P. beneolens, P. biolettii, P. californicum, P. canescens, 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 helleri, Gnaphalium obtusifolium var. helleri
Name authority (Britton) 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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