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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Potamogetonaceae||View Description||Dichotomous Key|
|Genus: Potamogeton||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Potamogeton richardsonii (A. Benn.) Rydb.
Habit: Perennial herb, rhizome matted. Stem: < 70 cm, branches few, generally straight, cylindric. Leaf: submersed, sessile, 1--12 cm, generally 10--20 mm wide, linear- to lance-ovate, margin crinkly near tip, base +- cordate, clasping, tip acute to rounded, flat, not hood-like, not splitting when dry, veins 3--35; stipules < 2 cm, free, persistent as fibers. Inflorescence: < 4 cm, +- < peduncle. Fruit: 2--4 mm, keels 0(1), sides concave to convex. Chromosomes: 2n=52.
Ecology: Uncommon. Shallow to deep water, ponds, lakes, lagoons, streams; Elevation: < 2800 m. Bioregional Distribution: NCo, KR, CaRH, c SN, n SNH, MP; Distribution Outside California: to Alaska, Colorado, eastern North America. Flowering Time: Jul--Aug
eFlora Treatment Author: C. Barre Hellquist, Robert F. Thorne & Robert R. Haynes
Jepson Online Interchange
Previous taxon: Potamogeton pusillus
Next taxon: Potamogeton robbinsii
Citation for this treatment: C. Barre Hellquist, Robert F. Thorne & Robert R. Haynes 2016. Potamogeton richardsonii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=39618, accessed on July 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 29, 2016.