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|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: Annual 1--50 cm, green to +- gray, cobwebby to tomentose. Stem: 1(5), +- erect, central axis dominant, generally branched, +- evenly leafy. Leaf: alternate [opposite], +- sessile, narrowly oblanceolate to elliptic [spoon-shaped], entire; distal leaves subtending heads, scarcely crowded, largest > proximal leaves. Inflorescence: heads disciform, +- sessile, 1 or 2--5 per dense group; involucre +- cup-like; phyllaries 4--6, equal, obovate, rounded, << paleae, scarious, persistent; receptacle length 0.5--1.8 × width, depressed or obovoid, glabrous; paleae of pistillate flowers each enclosing flower, deciduous with fruit, +- compressed-obovoid, obtuse, distally bulged out and hood- or helmet-like, generally woolly abaxially, obscurely parallel-veined (veins 5+), margin +- reflexed distally as scarious wing (wing adaxially +- lateral, projected upward or inward, +- visible in head); paleae of disk flowers 0, or 1--3, reduced, erect, +- folded, lanceolate, acute, papery, scarious, glabrous. Pistillate Flower: 4--12, all subtended by paleae; corolla obscure, narrowly cylindric. Disk Flower: staminate, 2--5; pappus 0 or of 1--5 deciduous bristles (hidden in head); corolla 4--5 lobed; anther base tailed, tip +- triangular; style tips +- linear-oblong. Fruit: each enclosed by palea, +- obovoid, +- compressed laterally, smooth, shiny (corolla scar adaxial, lateral), pappus 0.
Species In Genus: 5 species: +- coastal southwestern North America, Mediterranean. Etymology: (Greek: small foot) Note: Our species (sect. Rhyncholepis) may comprise a separate North America. genus.
eFlora Treatment Author: James D. Morefield
Jepson Online Interchange
Key to MicropusPrevious taxon: Mauranthemum paludosum
Next taxon: Micropus amphibolus
Citation for this treatment: James D. Morefield 2017. Micropus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=526, accessed on February 25, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 25, 2017.