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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, 0.5--25 dm. Stem: erect. Leaf: proximal opposite, often in rosettes, distal alternate, sessile; blades lanceolate or oblong-linear to linear, generally entire, seldom toothed, coarse- to soft-hairy, generally also glandular. Inflorescence: heads generally radiate, occasionally obscurely so (discoid), in flat-topped or panicle-, raceme-, or spike-like clusters; involucre 1--10+ mm diam, generally +- spheric to ovoid or urn-shaped; phyllaries in 1 series, lance-linear to oblanceolate, each mostly or wholly enfolding a subtended ray ovary, falling with fruit, coarse-hairy, generally glandular; receptacle flat to convex, glabrous or minutely bristly; paleae in 1 series between ray and disk flowers, +- fused or free, phyllary-like but more scarious, generally persistent (falling readily in Madia radiata). Ray Flower: (0)1--22; corolla generally +- yellow, ray sometimes maroon or +- purple adaxially, proximally, or throughout. Disk Flower: ; Fruit: ray fruit generally compressed side-to-side, generally +- 3-angled (rarely cylindric), +- club-shaped, often arched, glabrous, tip occasionally beaked, pappus 0; disk fruit 0 or similar to ray fruit, sometimes obovoid, often +- straight, tip not beaked, pappus 0.
Species In Genus: 10 species: western North America, southern South America; introduced elsewhere. Etymology: (Native Chilean name) Note: Generally self-fertile (except Madia elegans and Madia radiata). Other taxa in TJM (1993) moved to Anisocarpus, Harmonia, Hemizonella, Jensia, Kyhosia.
eFlora Treatment Author: Bruce G. Baldwin
Jepson Online Interchange
Key to MadiaPrevious taxon: Machaeranthera tanacetifolia
Next taxon: Madia anomala
Citation for this treatment: Bruce G. Baldwin 2017. Madia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=517, accessed on March 29, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 29, 2017.