|University of California, Berkeley|
|Jepson eFlora: Taxon page
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 [subshrub], cespitose, thickly taprooted, sometimes with rhizome and woody caudex. Stem: erect or ascending. Leaf: simple, cauline, proximally crowded, spreading or ascending, alternate, sessile; blades linear to narrowly lanceolate or oblanceolate, entire, 1-veined. Inflorescence: heads radiate, 1 [2--3 in loose cyme-like cluster]; involucre cylindric or bell-shaped; phyllaries 20--60, +- equal or graduated in 2--6 series, lance-linear to oblong, 1-veined, midrib green, thickened, margins scarious or membranous; receptacle flat, pitted, epaleate. Ray Flower: pistillate, fertile. Disk Flower: bisexual [or staminate]; corolla yellow, tube < narrowly cylindric throat, lobes 5, triangular; style branch tips lanceolate. Fruit: fusiform, +- compressed, densely strigose, nonglandular (in California) or not; pappus of 2 series of bristles, outer < inner.
Species In Genus: 5 species: North America. Etymology: (Greek: violet ray)
eFlora Treatment Author: David J. Keil
Jepson Online Interchange
Previous taxon: Hypochaeris radicata
Next taxon: Ionactis alpina
Citation for this treatment: David J. Keil 2016. Ionactis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=10400, accessed on May 05, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 05, 2016.