| Calamagrostis epigejos (L.) Roth | |
| Publ. & Syn. | Roth, Tent. Fl. Germ. 1: 34 (1788). - Arundo epigejos L., Sp. Pl.: 81 (1753). Lectotype (LINN): Europe. Herb. Linn. 97.11 (Hubbard in Clayton et al. 1970: 102). |
| Notes | Calamagrostis epigejos reaches the Borderline Arctic or perhaps the Arctic in Kanin-Pechora in northeastern European Russia (see Tzvelev 1974), as adventive according to Sekretareva (1999). It approaches the Arctic in Tana in Norway as native and in the Murman area in northwestern European Russia as adventive. This species is documented at several ploidy levels and contains both sexual and agamospermous plants. Elven and Wischmann (unpubl.) were not able to distinguish between pollen-fertile (probably tetraploid) and pollen-sterile (probably more high-polyploid) plants in the Norwegian material by other morphological characters. They also found plants with partial abortion of anthers (some anthers fully developed with superficially good pollen, others entirely shrunken). Autopolyploidy is indicated and the ploidy levels should therefore be included within one species. Tzvelev commented that 2n = 28 is counted for subsp. meinshausenii Tzvelev which he finds morphologically different but which does not reach the Arctic. |
| Chromosomes | (1) 28 29 (4x). - Europe, Russia, Far East. - Numerous reports. (2) 35 (5x). - Europe. - Linder and Brun (1956). (3) 42 (6x). - Europe, Russia, Siberia. - At least five reports. (4) 56 (8x). - Europe, Russia, Caucasus, Siberia, Far East. - Numerous reports. (5) 70 (10x). - Europe, Russia. - Three old reports. |
| Geography | European - Asian: RUS*. |
| Distribution | N = S E = * KP = * [ key ] |
| Parent taxon | Calamagrostis Adans. |
| PAF ID | 342013 |