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
- Asteraceae
- Asteraceae Group 6
- Ratibida
Ratibida
See list of 2 species in this genusReference: Richards (1968).
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1a. Disk ellipsoid to spherical, 10–25 ×10–18 mm; plants from fibrous roots; pappus usually absent (rarely consisting of 1 or 2 tooth-like scales); style branches stigmatic in the apical ½
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1b. Disk cylindric, 10–50 ×7–12 mm; plants from a taproot; pappus usually consisting of 1 or 2 tooth-like scales (rarely absent); style branches stigmatic in the apical ¼ to ⅓
Show photos of: Each photo represents one species in this genus.