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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: Annual or perennial herb from taproot, occasionally with branched caudex, generally scapose; sap milky. Leaf: generally all basal, generally lanceolate to oblanceolate, long-tapered to obtuse, entire, toothed, or 1--2-pinnately lobed, 1° lobes generally +- opposite, generally on proximal 2/3; 2° lobes 0--1; faces glabrous to densely hairy, hairs generally white-opaque and glandless. Inflorescence: heads liguliflorous, 1, erect, long-peduncled; involucre cylindric to ovoid or bell-shaped in flower, ovoid in fruit, glabrous to densely hairy, hairs white-opaque and glandless or colorless- or yellow-translucent (occasionally with purple cross-walls) and glandular, glands generally yellow, occasionally purple; phyllaries in 2--5(+) series, +- equal in flower, often strongly graduated in fruit, generally entire, green to rosy-purple, often with darker spots or midstripe, outer erect or tips spreading to recurved, inner erect, elongating with fruit or not, +- reflexed when dry; receptacle flat, epaleate (paleate), generally pitted. Flower: 5--500; ligules +- equaling to much exceeding involucre, yellow, or orange, pink, red, or purple, readily withering. Fruit: cylindric to fusiform or obconic (inflated), +- 10-ribbed, generally +- white to brown or purple-black (gray), glabrous to minutely coarse-hairy or puberulent; beak << to >> body (0); pappus of many fine, simple, white bristles.
Species In Genus: 11 species: America. Etymology: (Greek: chief or goat + chicory, meaning is obscure) Note: Closely related to Nothocalais. Self-pollination complicates variation in some species; polyploidy and hybridization blur distinctions between some taxa.
eFlora Treatment Author: Gary I. Baird
Jepson Online Interchange
Key to AgoserisPrevious taxon: Ageratina shastensis
Next taxon: Agoseris apargioides
Citation for this treatment: Gary I. Baird 2017. Agoseris, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=302, accessed on February 20, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 20, 2017.