Packera hyperborealis
northern groundsel
usually 1, sometimes multiple, bases and leaf axils tomentose, otherwise glabrous.
(and proximal cauline) petiolate;
blades oblanceolate to obovate or lyrate (pinnately lobed to pinnatifid, terminal lobes larger than laterals), 10–30+ × 10–20+ mm, bases tapering, ultimate margins ± crenate to serrate.
gradually to abruptly reduced (sessile; pinnatisect or entire).
bracteate (bractlets purple-tinged), glabrous or glabrate.
0 (rarely) or 10–12;
corolla laminae 8–10 mm.
45–60+;
corolla tubes 3.5–4 mm, limbs 3–3.5 mm.
13, green (sometimes purple-tinged distally), 6–8 mm, glabrous.
0 or inconspicuous (bractlets purple-tinged).
1–2(–5+) in cymiform arrays.
1.5–2.5 mm, hirtellous on ribs;
pappi 6–7 mm.
= 46.
Packera hyperborealis
Packera hyperborealis is known only from lowland tundra from Alaska to the Mackenzie River and as far south as the northern end of the Franklin Mountains. It has also been collected as far north as Banks Island.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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