Potamogeton alpinus subsp. tenuifolius (Raf.) Hult.
FamilyPotamogetonaceae — APG family: Potamogetonaceae
SynonymsPotamogeton tenuifolius Raf.
DescriptionPlant rust-colored, at least toward top; stem usually branching at apex, with linear-lanceolate, obtuse, submerged leaves, much longer than internodes; floating leaves, when developed (rarely present in Alaskan specimens) elliptic to obovate, blunt; peduncles not thicker toward apex; spike reddish-brown; fruit ovate, with distinct, bent beak.
EcologyLakes and ponds. P. alpinus described from northern Italy, subsp. tenuifolius from Lake Mistassini.
Broken line on circumpolar map indicates range of subsp. alpinus.
Hultén's Flora About

This is a digital representation of Eric Hultén’s ‘Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants’, which was published by Stanford University Press in 1968. The book was digitized by C. Webb (at UAMN) as part of the Flora of Alaska project, with funding by the US NSF (Grant 1759964 to Ickert-Bond & Webb), and with permission of Stanford University Press. Data and images © 1968 Board of Trustees of the Leland Stanford Jr. Univ. Usage licence: Creative Commons BY-NC-SA 4.0. NB: You may find OCR errors; please refer to the hard-copy if in doubt.