Najas guadalupensis (Sprengel) Magnus var. guadalupensis . Subgenus: Caulinia. Section: Americanae. Common Naiad, Southern Naiad. Phen: Jul-Oct. Hab: Lakes, rivers, impoundments. Dist: ME to AB and WA, south to s. FL, TX, and CA, and south through Mexico, Central America, South America; West Indies.
Origin/Endemic status: Native
Taxonomy Comments: Haynes & Hellquist (1996) and Haynes in FNA (2000) treat all infraspecific taxa of N. guadalupensis as subspecies rather than varieties.
Synonymy: = Meso6; = Najas guadalupensis (Spreng.) Magnus – NY; < Naias guadelupensis – S, S13, orthographic variant; < Najas guadalupensis (Spreng.) Magnus – AqW, Bah, ETx1, F, G, GrPl, GW1, NcTx, Pa, RAB, SFla, Tat, Tn, Tx, W, WH3; < Najas guadalupensis (Spreng.) Magnus ssp. guadalupensis – FNA22, K1, K3, K4, Mi, Mo1, NE; < Najas guadalupensis (Spreng.) Magnus var. guadalupensis – Ar, C, Il, Va, Haynes (1979)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
- Great Plains: OBL (taxonomic split from wetland indicator species)
- Midwest: OBL (taxonomic split from wetland indicator species)
- Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)
Heliophily: 8
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