What’s a dichotomous key?
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- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
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- Dichotomous Key
- Potamogetonaceae
- Stuckenia
Stuckenia
See list of 2 species in this genus-
1a. Stipular sheaths open with overlapping edges; leaf blades commonly acute at the apex, with an apiculus on young plants; stigma borne on a short style, the style persistent on the achene and forming a tiny beak on mature drupes; drupes 3–4.5 mm long
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1b. Stipular sheaths closed; leaf blades commonly blunt to obtuse at the apex, sometimes retuse, rarely apiculate; stigma broad and sessile, not forming a beak on mature drupes; drupes 2–3 mm long
Show photos of: Each photo represents one species in this genus.