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Up-to-date information about California vascular plants is available from the Jepson eFlora.
Names are linked to treatments from the Manual
Key to ELODEA
N.B.: couplets are linked, e.g., 1. is linked to 1'.
1. Leaf 1–4 mm wide, tip obtuse or abruptly pointed; staminate flower not deciduous, not free-floating; staminate sepals 3.5–5 mm, petals ± 5 mm; pistillate sepals ± 2–3 mm
1' Leaf 0.3–2 mm wide, tapered to acute tip; staminate flower deciduous, free-floating; staminate sepals ± 2 mm, petals < 1 mm or 0; pistillate sepals ± 1 mm