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By Arve Elvebakk, Pål Prestrud

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The P. arctiea complex is polymorphic and mainly, or perhaps entirely, apomictic. Severai Tolm. (Love & Love 1975, ToJmachev 1975, taxa have been reported from Svalbard. The Randel 1974, Engelskjøn 1990). The type of P. revision by Nannfeldt (1940) demonstrated that polare from Vaigatch (LE) belongs within P. lap­ the variability in southern Norway alJowed the ponicum col!. (according to Engelskjøn pers. ). These taxa have, however, been much three other subspecies could be recognised within heterogeneous northern Scandinavian confused.

Flora Nordica). ) The taxon is considered to have its origin in the hybrid R. lapponicus x pal/asU and is known only with vegetative propagation. ) A. & D. Love morphologically and ecologically distinct. In gen­ eral its biology is that of an autonomous species, and its distribution is distinctly different from one The plant has only been found at Kapp Thordsen of hs proposed parents (R. pallasii), which is very in the rare. Rønning (1971) considered it as a Svalbard Isfjorden area and was described by Nathorst (1883) as R.

Hyperithatten The material combines (1961 and characters from P. chamissonis and P. pulche/la later) are based on this mixture. His illustration and can be interpreted as representing a possibly both. The descriptions of Rønning of "P. rubricaulis" (Rønning 1964, 1979, ] 996) is apomictic, seed-producing taxon arisen by hybrid­ (1986) proposed an origin of his P. obviously based on a tall-growing P. pulehella isation. Sojak with distinctly pinnate leaves, while his illus­ insularis from the hybrid P.

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