Potamogeton berchtoldii Fieber ssp. berchtoldii . Slender Pondweed. Phen: May-Sep. Hab: Millponds, other quiet waters. Dist: NL (Newfoundland) west to AK, south to Panhandle FL, TX, NM, and CA. Reported from SC by Gaddy & Rayner (1980).

Origin/Endemic status: Native

Synonymy ⓘ: = K3, K4; = Potamogeton berchtoldi – AqW, Mi, NE, NY, WV; = Potamogeton pusillus L. ssp. tenuissimus (Mert. & Koch) R.R.Haynes & Hellq. – Ar, ETx1, FNA22, K1, Tn; = Potamogeton pusillus L. var. tenuissimus Mert. & W.D.J.Koch – GrPl, Va, W; > Potamogeton berchtoldi var. colpophilus (Fernald) Fernald – Tat; > Potamogeton berchtoldi var. lacunatus – Tat, orthographic variant; > Potamogeton berchtoldi var. tenuissimus – Tat, orthographic variant; < Potamogeton berchtoldii Fieber – Il, RAB, Z; > Potamogeton berchtoldii Fieber var. acuminatus Fieber – F; > Potamogeton berchtoldii Fieber var. berchtoldii – F; > Potamogeton berchtoldii Fieber var. lacunatus (Hagstr.) Fernald – F; > Potamogeton berchtoldii Fieber var. polyphyllus (Morong) Fernald – F; > Potamogeton berchtoldii Fieber var. tenuissimus (Mert. & Koch) Fernald – F, Tx; < Potamogeton pusillus L. – G, GW1, Pa, S, WH3, Wiegleb & Kaplan (1998); < Potamogeton pusillus L. var. pusillus – C

Links to other floras: = Potamogeton pusillus ssp. tenuissimus - FNA22

Show in key(s)

Show parent genus

Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (taxonomic lump from wetland indicator species)
• Eastern Mountains and Piedmont: OBL (taxonomic lump from wetland indicator species)
• Great Plains: OBL (taxonomic lump from wetland indicator species)
• Midwest: OBL (taxonomic lump from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic lump from wetland indicator species)

Heliophily ⓘ: 9