- 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
Identification of Sisyrinchium requires examination of multiple ramets because occasional stems from a given genet will show an unusual character state. For example, it is possible to find “branched stems” among a clump of S. montanum, a species that normally displays “unbranched stems.” Reference: Cholewa and Henderson (2002).
1b. Inflorescences either occurring singly at the summit or numbering 2–5 and then borne on branch-like peduncles; spathe bracts not closely subtended by leaves; tepals blue to purple (rarely pale blue or white)
2a. Inflorescences sessile, usually solitary at the apex of the stem; stems appearing unbranched [Fig. 139]
2b. Inflorescences pedunculate, usually 2–5 per stem; stems appearing branched due to long, branch-like peduncles [Fig. 138]
4b. Stems 0.8–1.9 mm wide, narrowly winged, with entire margins; outer bract of the spathe mostly 12–18 mm long; plants yellow-green to olive-green in drying
Show photos of: Each photo represents one species in this genus.