- 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
Micromorphological details of pubescence requiring 20 × or greater magnification are important for confident determinations of some species. Reference: Mulligan (1976).
1b. Petals entire or emarginate at apex; stems with at least 1 leaf-bearing node
2b. Plants perennial from a caudex; rachis of infructescence relatively elongate, (16–) 20–78 mm long; stem leaves more evenly distributed, usually some produced in the apical half of the stem
3b. None of the flowers subtended by leafy bracts; siliques glabrous or sparsely pubescent with simple or forked hairs
Show photos of: Each photo represents one species in this genus.