Compilation
Stuckenia pectinata

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Name

Identification
Potamogeton angustissimus Kunth [family POTAMOGETONACEAE ] (stored under name); Verified by Kunth, K.S., Potamogeton angustissimum Kunth [family POTAMOGETONACEAE ] Verified by Kunth, K.S., Potamogeton pectinatus L. [family POTAMOGETONACEAE ] Verified by Kaplan, Z., 2003 Stuckenia pectinata (L.) Borner [family POTAMOGETONACEAE ] Verified by Not on sheet,
Related name
  • Potamogeton tenuifolium
  • Potamogeton pectinatus
  • Potamogeton tenuifolius
  • Potamogeton angustissimus
  • Stuckenia pectinata
  • Potamogeton angustissimum
Common name
  • Sago-pondweed, Flora of North America Vol. 22
  • potamot pectine, Flora of North America Vol. 22

Flora

Entry for Stuckenia pectinata (Linnaeus) Borner [family ]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 22,
Names
Stuckenia pectinata (Linnaeus) Borner [family ], Flora fur das deutsche Volk, 713. 1912
Potamogeton pectinatus Linnaeus [family POTAMOGETONACEAE], Sp. Pl., 1: 127. 1753 (as pectinatum)
Information
Stems branched, especially distally, terete to slightly compressed, to 75 cm. Leaves: those of main stem only slightly larger than those of branches; stipules with stipular sheaths not inflated, 0.8--1.1 cm, ligule 0.8 mm; blade linear, 5.6--9.2 cm ´ 0.2--1 mm, apex acute to mucronate or apiculate; veins 1--3. Inflorescences: peduncles terminal or axillary, erect to ascending, cylindric, 4.5--11.4 cm; spikes moniliform to cylindric, 14--22 mm; verticels 3--5. Fruits yellow-brown to brown, oblanceoloid, 3.8--4 ´ 2.5--3.1 mm; beak toward abaxial margin, erect, 0.5--1.1 mm. 2n = 78.
Phenology
Flowering summer--fall
Altitude range
0--2400 m
Distribution
St. Pierre and MiquelonMexicoCentral AmericaSouth AmericaEurasiaAustralia.USA Ala.USA AlaskaUSA Ariz.USA Ark.USA Calif.USA Colo.USA Conn.USA Fla.USA IdahoUSA Ill.USA Ind.USA IowaUSA Kans.USA Ky.USA La.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Mo.USA Mont.USA Nebr.USA Nev.USA N.H.USA N.J.USA N.Mex.USA N.Y.USA N.C.USA N.Dak.USA OhioUSA Okla.USA Oreg.USA Pa.USA R.I.USA S.Dak.USA Tenn.USA Tex.USA UtahUSA Vt.USA Va.USA Wash.USA W.Va.USA Wis.USA Wyo.Canada Alta.Canada B.C.Canada Man.Canada N.B.Canada Nfld. and Labr. (Nfld.)Canada N.W.T.Canada N.S.Canada Ont.Canada P.E.I.Canada Que.Canada Sask.Canada Yukon
Discussion
No specimens have been seen from Delaware, but the species is to be expected there.
The sago-pondweed is among the most important species as food for waterfowl (E. Moore 1913). The species reproduces vegetatively by underground tubers and is spread by various duck species, especially canvas backs. In a study of food for ducks, a population of canvas backs was observed feeding in aquatic vegetation comprised of several genera, including sago-pondweed. When the stomach contents were examined, they were found to contain essentially 100% tubers of sago-pondweed (E. Moore 1913).
Two hybrids with this species as a putative parent have been described under the genus Potamogeton. These are P. pectinatus ´ P. vaginatus (= P. ´ bottnicus Hagström) and P. filiformis ´ P. pectinatus (= P. ´ suecicus K. Richter).

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