| Cochlearia lenensis Adams ex Fisch. | |
| Publ. & Syn. | Fisch. in DC., Syst. Nat. 2: 367 (1821). Described from the Lena River estuary in Yakutia (Siberia). |
| Notes | Nikiforova (1994) accepted the Siberian Cochlearia lenensis apart from the also Siberian C. arctica and from C. groenlandica. Cochlearia lenensis is reported to differ from C. groenlandica in seeds smaller (0.5-0.8 mm) and nearly smooth vs. larger (1-1.2 mm) and with obtuse tubercles, in branched stems but usual absence of a prominent central stem vs. little branched stems and common presence of one prominent stem, petals ca. 2 mm and oblong-elliptical vs. 3-4 mm and spathulate, and some other characters. Both C. lenensis and C. groenlandica differ from C. arctica by petals 2-4 mm vs. ca. 5 mm, by fruits 4-6 mm and broader vs. 5-7 mm and narrowly ellipsoid, and by seeds 4-6 vs. 6-9 per fruit. Nikiforova stated that this plant also occurs along the "Bering Sea coast and its islands" which means the range of C. arctica subsp. oblongifolia. Cochlearia lenensis was not mentioned for the Russian Far East by Berkutenko (1988) who accepted only a collective C. officinalis for that region. |
| Chromosomes | 14 (2x). - Europe (N), Far East (N), Alaska, Canada, Greenland. - Numerous reports, for C. arctica (north of its now acknowledged range), C. groenlandica, and C. officinalis (north of its now acknowledged range). |
| Geography | Asian (N): SIB. |
| Distribution | N = R D = R E = R Kh = r Tm = r [ key ] |
| Parent taxon | Cochlearia L. |
| PAF ID | 672203 |