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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
Section VulpinaeSee list of 4 species in this section
Reference: Standley (2002).
1b. Perigynia truncate and conspicuously spongy-thickened at the base, with usually 7 veins adaxially; sheaths not dotted; achenes ovate
2b. Leaf sheaths usually corrugated on surface opposite leaf blade (smooth in C. oklahomensis), the summits thin, fragile, colorless, and convex; leaf blades smooth on adaxial surface, not epistomic; inflorescence 5–15 cm long
Show photos of: Each photo represents one species in this section.