Packera eurycephala
Packera franciscana
cut-leaf butterweed, wide-head groundsel
San Francisco Peaks ragwort
1 or, usually, multiple, clustered, densely tomentose to glabrescent.
1 (often purplish), sparsely lanate or arachno-tomentose, glabrescent.
(soon withering), petiolate;
blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate.
petiolate;
blades lyrate to sublyrate (midribs winged) or ovate to orbiculate, 10–20+ × 30–50+ mm, bases tapering to contracted, ultimate margins ± dentate (faces glabrate at flowering).
gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised).
gradually reduced (sessile; usually bractlike and entire, sometimes larger and pinnatifid).
bracteate, sparsely to densely lanate-tomentose.
conspicuously bracteate (bractlets red-tipped), densely lanate-tomentose.
8 or 13;
corolla laminae 10–15 mm.
8 or 13;
corolla laminae 5–10 mm.
35–50+;
corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm.
30–40+;
corolla tubes 2–3 mm, limbs 2.5–3.5 mm.
13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally.
13 or 21, purplish, 6–9 mm, sparsely tomentose.
inconspicuous (bractlets tomentose).
conspicuous (bractlets reddish or purple).
5–20+ in open or compact (rarely), cymiform arrays.
borne singly or 2–6 in compact, cymiform arrays.
1–1.5 mm, glabrous;
pappi 6–7 mm.
1.5–2 mm, glabrous;
pappi 5–6 mm.
= 46.
= 46.
Packera eurycephala
Packera franciscana
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Packera franciscana is known only from above timberline in the San Francisco Peaks and is in the Center for Plant Conservation’s National Collection of Endangered Plants. It spreads by extensive rhizomes and is fairly abundant locally.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems (1–)2–6; leaf blades: margins usually serrate-dentate, sometimes deeply dissected, midribs winged | var. eurycephala |
1. Stems 1; leaf blades finely dissected, lateral lobes also dissected, midribs not or weakly winged | var. lewisrosei |
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
