Panarctic Flora


360704 Delphinium middendorffii Trautv.


Polar Ural - Novaya Zemlya: Rare
Yamal - Gydan: Rare
Taimyr - Severnaya Zemlya: Scattered
Anabar - Onenyo: Scattered
Kharaulakh: Scattered
Yana - Kolyma: Scattered
West Chukotka: Scattered
Mid Arctic Tundra: Rare
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent

2n= 16 (2x). - Russia (N), Siberia. - At least three reports.

Geography: Asian (N): RUS SIB RFE.

Notes: Yurtsev: Delphinium middendorffii is related to D. cheilanthum and D. chamissonis. It differs constantly from D. cheilanthum in the longer and patent pubescence of the leaf lower surface vs. short, appressed, incurved, and in sepals almost as long as spur vs. 1/3 of spur; from D. chamissonis mainly in glabrous, glaucous stems. Other characters are variable among populations, which could support a hypothesis of origin by introgressive hybridization at diploid level between D. cheilanthum and D. chamissonis or their progenitors in the distant past. Today, D. middendorffii occurs both within and well outside the range of the putative parents.

Higher Taxa