Jepson eFlora
Key to families | Table of families and genera

Key to Lemna

View taxon page for Lemna

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Plant body 6–10 mm, on tapered stalk, often in branched chains of 8–30 ..... L. trisulca

1' Plant body 1–6 mm, appearing sessile, single or generally in 2s to 8s

2. Veins per plant body 1 (sometimes obscure)

3. Plant body 1–2.5 mm, generally thinner at margin, generally in 2s, not attached; vein < 2/3 distance from root attachment to tip of plant body ..... L. minuta

3' Plant body 2–4 mm, thin ± throughout, often in 4s to 8s, attached; vein up to 3/4 distance from root attachment to tip of plant body ..... L. valdiviana

2' Veins per plant body 3–5

4. Root sheath with 2 obvious, wing-like appendages at base ..... L. aequinoctialis

4' Root sheath not winged

5. Plant body widely elliptic to round, tip asymmetric, lower surface generally convex ..... L. gibba

5' Plant body widely elliptic to obovate, tip generally symmetric, lower surface flat

6. Upper surface generally smooth; lower surface green; winter buds 0 ..... L. minor

6' Upper surface midline generally with row of minute bumps; lower surface often ± red in age; winter buds dark green or brown in fall ..... L. turionifera


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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