What’s a dichotomous key? Get HelpSee list of 2 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: Clewell and Wooten (1971).
1a. Leaf blades firm, 3–7 (–10) ×2–5 (–5.5) cm, obtuse to acute at the apex, with 7–12 well-developed, rounded to bluntly pointed teeth per margin, 4 or more times as long as the associated petiole; petioles 1–15 (–20) mm long (rarely lacking altogether); roots 0.8–1 (–1.5) mm thick; capitula with 10–19 flowers
1b. Leaf blades herbaceous, (5–) 6–18 ×3–11 (–12) cm, short-acuminate to acuminate at the apex, with 9–25 well-developed, pointed teeth per margin, 1.5–5 times as long as the petiole; petioles of principal leaves 20–80 mm long; roots 0.3–0.8 (–1) mm thick; capitula with (9–) 12–25 flowers
Show photos of: Each photo represents one species in this genus.