240201 Stuckenia pectinata (L.) Börner
Distribution
Kanin - Pechora: Scattered
Yana - Kolyma: Rare
South Chukotka: Rare
Western Alaska: Rare
Northern Alaska - Yukon: Present only in the Borderline Arctic
Central Canada: Rare
Shrub Tundra: Scattered
Bordering boreal or alpine areas: Frequent
- Börner, Fl. Deut. Volk: 713 (1912). - Potamogeton pectinatus L., Sp. Pl.: 127 (1753). Lectotype (UPS): Austria. Herb. Burser X:124, leg. Celsius 29 (Haynes 1986: 569). - Coleogeton pectinatus (L.) Les & R.R. Haynes, Novon 6: 390 (1996).
- Potamogeton marinus L., Sp. Pl.: 127 (1753). Lectotype (LINN): Europe. Herb. Linn. 175.13 (Haynes 1986: 571). - Stuckenia marina (L.) Tzvelev, Bot. Zhurn. 84, 7: 111 (1999).
2n=
78 (6x). - Europe, Asia (S), Far East (S), Canada. - Numerous reports.
Not included: Two reports of 2n = 42 from India (Misra 1966, 1972), probably from another species (or genus). A report of 2n = ca. 66 (5x?) from Chukotka (Probatova and Sokolovskaya 1986). Reports of 2n = 78-87 from Europe (Kalkman and van Wijk 1984), of 2n = 84 from Japan (Uchiyama 1989), and of 2n = 86 from East Chukotka (Yurtsev et al. 1975). The number of 2n = 78 is otherwise very constant in Stuckenia. Some of these reports of other numbers may be due to miscounts or accessory chromosomes.
Geography: Circumboreal: RUS SIB RFE ALA CAN.
Notes: See also Stuckenia filiformis and S. vaginata.
Tzvelev (2000c, in comment) accepted S. marina (Potamogeton marinus) apart from S. pectinata. We follow the majority of authors who synonymize S. marina with S. pectinata (e.g., St. John 1916; Hagström 1916; Dandy 1980 and in comments to the Linnaean type; Haynes 1986; Preston 1995).
Porsild & Cody (1980) mapped S. pectinata into the Arctic in Canada. Haynes and Hellquist (2000c) excluded their arctic records (possibly except for the Kotzebue area, western Alaska). They probably transferred these to S. filiformis subsp. occidentalis (see below). Plants more or less conforming to the Eurasian concept of S. pectinata are present in arctic western Alaska and approach the Arctic in northern Alaska (ALA, O; some even annotated as S. pectinata by Haynes and Hellquist). However, the variation pattern in North America is more complicated or at least less disjunct than usually found in Europe and western Asia and we may have misinterpreted it. Records from the Arctic in European Russia and Siberia should be checked anew. Kashina (1988) accepted only one arctic occurrence in Siberia, at the Kolyma River estuary.
Higher Taxa
- Stuckenia [2402,genus]