What’s a dichotomous key? HelpSee list of 4 species in this genus
- 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
Reference: Sheviak (2002a).
1b. Plants with 2–9 leaves alternately arranged on the stem; labellum with a round opening near the base on the adaxial surface
2b. Labellum 1.5–5.4 cm long, neither red-veined nor prolonged downward to form a protruding sac; lateral sepals connate, thereby forming a single blade positioned beneath the labellum
3b. Labellum yellow, usually with purple veins; lateral petals spotted, streaked, or entirely suffused with red-purple or red-brown, rarely unmarked and then ± yellow-green, twisted, acute to acuminate at apex; lateral sepals connate except at tip, forming a bilobed apex
Show photos of: Each photo represents one species in this genus.