- 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
Authorities disagree on how best to treat Taraxacum. Numerous microspecies have been distinguished, sometimes on very subtle distinctions. The species are treated here in the broad sense. Taraxacum ceratophorum (Ledeb.) DC. was reported from NH based on an immature specimen collected in Kings Ravine on Mount Adams, Coos County (Pease 1917). However, no mature specimens have ever been collected to verify the identity of the plant. Further, the specimen (at NEBC!) shows narrow and reflexed (in part) outer involucral bracts that are very unlike T. ceratophorum (i.e., the specimen appears misidentified and is likely T. officinale). Taraxacum ceratophorum has also been reported from MA and ME by Magee and Ahles (1999); however, this report was based on incorrectly synonymizing T. latilobum (specimens at NEBC!) with T. ceratorphorum (the two taxa are very distinct are do not comprise the same species). References: Fernald (1933), Brouillet (2006b).
1a. Inner (i.e., longer) involucral bracts with a dark, corniculate appendage at the tip [Fig. 471]; cypsela body at maturity purple-red to brown-red; leaf blades lacerate-lobed with narrow lobes, the medial lateral lobes of leaf blades 1–10 (–12) mm wide at the base
1b. Inner involucral bracts lacking dark, horn-like appendages at the tip; cypsela body at maturity light brown to gray-brown to brown; leaf blades toothed to lobed, the medial lateral lobes of leaf blades, when present, (5–) 10–32 (–38) mm wide
2b. Outer involucral bracts becoming reflexed [Fig. 471]; plants (1–) 5–75 cm tall; involucres excluding the outer calyculus (13–) 14–25 mm tall
Show photos of: Each photo represents one species in this genus.