520106 Epilobium lactiflorum Hausskn.
Distribution
Northern Iceland: Frequent
Northern Fennoscandia: Frequent
Polar Ural - Novaya Zemlya: Rare
Hudson Bay - Labrador: Rare
Western Greenland: Scattered
Eastern Greenland: Scattered
Mid Arctic Tundra: Presence uncertain
Southern Arcti Tundra: Scattered
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent
- Hausskn., Oesterr. Bot. Z. 29: 89 (1879). Hultén (1968a): "Described from inhomogeneous material from northern Europe, Greenland, and America". No lectotype selected according to Cronquist in Cronquist et al. (1997). - Epilobium hornemannii var. lactiflorum (Hausskn.) D. Löve, Taxon 17: 89 (1968).
- Epilobium alpinum L., Sp. Pl.: 348 (1753) nom. rejic.. Described from mountains in central and northern Europe: "Helveticis, Lapponicis". Lectotype (LINN): Herb. Linn. 486.8 (Marshall 1907: 367).
2n=
36 (4x?). - Europe (N), Canada (W), U.S.A. (NE), Greenland. - Several reports.
Geography: Amphi-Atlantic & American Pacific - Cordilleran: ICE NOR RUS CAN GRL.
Notes: The lack of type has made the name Epilobium lactiflorum ambiguous to many authors. Several North American authors consider E. lactiflorum a variety of E. hornemannii. This is difficult to accept from a Scandinavian viewpoint. What we regard as E. lactiflorum in Scandinavia differs distinctly morphologically from E. hornemannii. The two species are often found together, sometimes in mixed stands, although E. lactiflorum prefers slightly drier sites. Transitional forms are sometimes found but then with near or full seed abortion, i.e., sterile hybrids (as among other species of Epilobium). In at least one of their main regions of co-occurrence, E. hornemannii and E. lactiflorum behave like independent species.
Higher Taxa
- Epilobium [5201,genus]