Panarctic Flora


343902a Beckmannia eruciformis subsp. borealis Tzvelev


Kanin - Pechora: Casual (Adventive)
Western Alaska: Rare
Shrub Tundra: Rare
Bordering boreal or alpine areas: Rare

2n= 14 (2x). - Siberia (S), Far East (N). - Three reports.

Geography: European (NE) - Asian (NW): RUS** ALA.

Notes: Elven, Murray, and Tzvelev: Tzvelev (PAF proposal) reported subsp. borealis to reach the Arctic in northeastern European Russia and Alaska. He commented that there are two rather different species (Beckmannia syzigachne and B. eruciformis) and one hybrid species (B. borealis) which probably is closer to B. syzigachne. The two species B. eruciformis (perennial) and B. syzigachne (annual or biennial) do not differ much morphologically and different solutions have been proposed. Hultén (1962) treated them as one species under the priority name B. eruciformis, with subsp. eruciformis in central and eastern Europe and western and central Siberia and subsp. baicalensis (B. syzigachne) in Asia and North America. See Hultén and Fries (1986: map 242). Tutin (1980) accepted two species and in addition Tzvelev's northeastern Russian B. eruciformis subsp. borealis. Subspecies borealis is reported to have only casual occurrence in arctic Russia. The Alaskan record is based on plants annotated as such by Yurtsev from the Pilgrim Hot Springs on the Seward Peninsula. Elven and Murray have confirmed that these plants differ from the common Alaskan B. syzigachne. Internal note: Problems with general European and western Siberian range and Alaska as native!

Higher Taxa