Panarctic Flora


361402 Coptidiumspitsbergense (Hadac) Elven


Kanin - Pechora: Rare
Svalbard - Franz Joseph Land: Scattered
Yamal - Gydan: Rare
Kharaulakh: Rare
West Chukotka: Presence uncertain
Wrangel Island: Rare
East Chukotka: Rare
Hudson Bay - Labrador: Rare
Northern arctic Tundra: Rare
Mid Arctic Tundra: Scattered
Southern Arcti Tundra: Rare
Shrub Tundra: Rare

2n= 24 (3x). - Europe (N), Far East (N). - At least four reports.

Geography: Circumpolar: NOR RUS SIB RFE CAN.

Notes: We assume Coptidium x spitsbergense to be a seed-sterile triploid hybrid. In "Spitzbergen" it occurs in large stands and nearly always in the absence of one (C. pallasii) or both assumed parents. It is comparatively frequent, whereas C. pallasii is very rare there. It is obviously not a case of occasional hybridization. Its range is assumed to be mainly or entirely due to bird dispersal of shoot fragments. Tolmachev (1971b) made the identification with Ruprecht's var. minimus. In addition to Svalbard, it is now confirmed from Kolguev and several other Russian regions and from north-central and northeastern Canada (Cody et al. 1988). A survey of material (ALA, CAN) in 2009 revealed no specimens from Alaska or the Yukon Territory.

Hadac published his name Ranunculus spitsbergensis with a separate type and did not base it on Nathorst's name var. spetsbergensis. Jalas (1988) showed that Nathorst's name, spelling and type have priority at varietal level, whereas Hadac' name, spelling and type have priority at species level.

Higher Taxa