861501b Tripleurospermum maritimum subsp. subpolare (Pobed.) Hämet-Ahti
Distribution
Northern Iceland: Frequent
Northern Fennoscandia: Persistent (Adventive)
Kanin - Pechora: Persistent (Adventive)
Svalbard - Franz Joseph Land: Casual (Adventive)
Polar Ural - Novaya Zemlya: Persistent (Adventive)
Yamal - Gydan: Rare
Taimyr - Severnaya Zemlya: Rare
Kharaulakh: Rare
Yana - Kolyma: Rare
West Chukotka: Rare
Western Greenland: Persistent (Adventive)
Shrub Tundra: Rare
Bordering boreal or alpine areas: Frequent
- Hämet-Ahti, Acta Bot. Fenn. 75: 5 (1967). - Tripleurospermum subpolare Pobed., Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk SSSR 21: 347 (1961). Holotype (LE): European Russia: the White Sea area, the Solovetsk Islands, Bolshoy Zayatskiy, 1957, leg. E. Pobedimova and S. Kolomoytzeva 215. - Matricaria maritima subsp. subpolaris (Pobed.) Rauschert, Folia Geobot. Phytotax. 9: 257 (1974).
- Tripleurospermum inodorum var. boreale Hartm., Handb. Skand. Fl., ed. 5: 2 (1849). Described from Trondheim in Sør-Trøndelag (Norway). - Tripleurospermum maritimum subsp. boreale (Hartm.) A. Pedersen, Meddel. Grønland 178, 7: 25 (1972). - Matricaria maritima subsp. borealis (Hartm.) Á. Löve & D. Löve, Bot. Not. 128: 521 (1976).
2n=
18 (2x). - Europe (N), Russia (N), Far East (N). - At least four reports.
Geography: European (N) - Asian (N): ICE NOR* RUS* SIB RFE GRL*.
Notes: Elven and Solstad: Subspecies subpolare differs from the two others in involucral bracts, ligulas, and shape of the glands on fruits. The majority of Icelandic plants (AMNH, ICEL) of Tripleurospermum maritimum conform to subsp. subpolare in shape and margin of involucral bracts but not in ligula length (mostly ca. 15 mm rather than ca. 20 mm). Almost no specimens with mature fruits are present in the Icelandic collections. We still assign these plants to subsp. subpolare and this is the major plant in the Arctic in Iceland. It reaches the Arctic in Norway and northwestern European Russia mainly as an adventive but perhaps an archaeophytic one. Pedersen (1972) reported subsp. subpolare to be native in Greenland, or at least an established adventive, and to be widespread.
Higher Taxa
- Tripleurospermum maritimum [861501,species]