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Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Perennial herb from taproot; sap milky. Stem: 0. Leaf: simple, basal, blades oblong to obovate, oblanceolate or linear-oblanceolate, with large distal lobe or not, +- toothed or pinnately lobed. Inflorescence: heads liguliflorous, 1, scapes unbranched, hollow; involucre cylindric to bell-shaped (urn-shaped in fruit); outer phyllaries (6)8--18(20), graduated in 2--3 series, erect or reflexed, ovate to lanceolate, tips horned or not; main phyllaries 7--25 in 2(3) series, equal, erect, spreading to reflexed in fruit, linear, tips horned or not, margin often scarious, irregularly toothed; receptacle +- flat, glabrous, epaleate. Flower: (15)20--150; ligules yellow, readily withering. Fruit: oblanceoloid to obovoid, with slender beak >> body, 4--12-ribbed, ribs sharply roughened, glabrous; pappus of 50--150, white, slender, minutely barbed bristles.
Species In Genus: 60(2000) species, many reproducing by asexually produced seeds: Eurasia, North America, South America, +- worldwide as weeds. Etymology: (Arabic to Persian: bitter herb)
eFlora Treatment Author: Luc Brouillet
Jepson Online Interchange
Key to TaraxacumPrevious taxon: Tanacetum vulgare
Next taxon: Taraxacum californicum
Citation for this treatment: Luc Brouillet 2016. Taraxacum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=628, accessed on May 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 25, 2016.