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
 - Poaceae
 - Poaceae Group 9
 - Tripsacum
 
Tripsacum
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      This genus contains exactly one species.
 
  
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