Pseudognaphalium helleri
Pseudognaphalium obtusifolium
Heller's cudweed, Heller's rabbit-tobacco
blunt-leaf rabbit-tobacco, eastern rabbit-tobacco, gnaphale à feuilles obtuses, old field balsam, rabbit-tobacco
greenish, glandular-villous (without persistent tomentum, stipitate glands mostly 0.3–1 mm, often variable, stalks broadened toward bases, about equaling gland widths).
white-tomentose, sometimes lightly so, usually not glandular, rarely glandular near bases.
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.
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.
campanulate, 6–7 mm.
broadly campanulate, 5–7 mm.
83–107.
38–96.
9–15.
4–8(–11).
in 4–6 series, white (opaque, shiny), ovate to ovate-oblong or oblong, ± tomentose.
in 4–6 series, white (opaque, usually shiny, sometimes dull), ovate to ovate-oblong, glabrous or tomentose (bases).
in corymbiform arrays.
in corymbiform (sometimes rounded to elongate) arrays.
ridged, smooth.
ridged, smooth.
Pseudognaphalium helleri
Pseudognaphalium obtusifolium
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.)
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