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Botanical Description

A remarkable tiny subarctic species, the result of a stabilized cross between species placed in different sections, P. nutans (Armerina) and P. mistassinica (Aleuritia). Shortly creeping, forming small mats with leaves elliptic to oblong-ovate, to 5cm long and 1.5cm wide, hairless and lacking meal. Flowers 5-8mm across white or rarely pale lilac, the petals deeply notched, homostyle and self-fertile, almost erect in umbels of up to nine on stems 1-15cm high.  Subarctic coastal pastures from Alaska to Iceland and to 2400m on mountains from Alaska south to Colorado, where it occurs with P. incana.