Arabidopsis petraea subsp. umbrosa (Turcz. ex Steud.) Elven & D.F. Murray
Publ. & Syn.Arabis media N. Busch, Bot. Mater. Gerb. Glavn. Bot. Sada RSFSR 3, 3-4: 11 (1922). Described from eastern Siberia. Type in LE. - Cardaminopsis media (N. Busch) O.E. Schulz in Engl. & Prantl, Nat. Pflanzenfam., ed. 2, 17b: 541 (1936).
NotesSubspecies septentrionalis and subsp. umbrosa share most of their morphological features but are, as far as observed (herbarium, field in northern Yakutia), non-overlapping morphologically in the area of sympatry in northern Siberia. There may be a ploidy difference as the two only counts originating from within the certain range of subsp. septentrionalis are of tetraploids, whereas those from within the range of subsp. umbrosa are of diploids.
Chromosomes16 (2x). - Siberia (N), Far East (N), Alaska (partly for A. lyrata subsp. kamchatica). - Numerous reports.
GeographyAsian (NE) - amphi-Beringian: SIB RFE ALA CAN.
Distribution N = F     AN = s     D = S     E = F     WI = ?     YG = r     CE = s     CS = ?     YK = ?     AW = r     Kh = f     CW = s     Tm = r     [ key ]
Parent taxonArabidopsis petraea (L.) V.I. Dorof.
PAF ID670503c
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Panarctic Flora Editor-in-Chief: Reidar Elven (Natural History Museum, University of Oslo)
Editorial Committee: Reidar Elven, David F. Murray (Museum of the North, University of Alaska), Volodya Yu. Razzhivin (Komarov Botanical Institute, Russian Academy of Sciences), Boris A. Yurtsev [deceased] (Komarov Botanical Institute, Russian Academy of Sciences)