Potamogeton praelongus Wulfen. Whitestem Pondweed. Phen: Jun-Jul. Hab: In lakes in deep water. Dist: Circumboreal, southward in North America to CT, s. NY, n. PA, n. IN, n. IA, NE, CO, UT, and n. CA. P. praelongus just extends into the northern part of our flora region. It is probably extant in n. PA, but needs further surveying in this area (C. Ciafre, personal communication).

Origin/Endemic status: Native

Synonymy: = AqW, C, F, FNA22, G, GrPl, Il, K3, K4, Mi, NE, NY, Pa

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Wetland Indicator Status:

• Eastern Mountains and Piedmont: OBL
• Great Plains: OBL
• Midwest: OBL
• Northcentral & Northeast: OBL

Heliophily: 9