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Encelia
Family: Asteraceae
Encelia image
Leslie Landrum
  • FNA
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Curtis Clark in Flora of North America (vol. 21)
Perennials, subshrubs, or shrubs (10-)30-150 cm. Stems erect, usually branched from bases, often throughout (scapiform in E. nutans and E. scaposa). Leaves usually cauline, sometimes basal (E. nutans and E. scaposa); alternate (usually drought-deciduous); petiolate (obscurely in E. scaposa); blades (1- or 3-nerved) mostly deltate, lanceolate, rhombic, or ovate (narrowly oblanceolate to linear in E. scaposa), bases broadly to narrowly cuneate, margins usually entire, rarely toothed, face glabrous or canescent, hirtellous, scabrellous, strigose, or tomentose, often gland-dotted as well. Heads radiate or discoid, borne singly or in ± paniculiform arrays (peduncles usually longer than involucres). Involucres ± hemispheric or broader, 4-22 mm diam. Phyllaries persistent, 18-30(-50+) in 2-3+ series (subequal to unequal, outer shorter). Receptacles flat or convex, paleate (paleae ± conduplicate, folded around and falling with cypselae). Ray florets 0 or 8-25(-40), neuter; corollas yellow. Disc florets 80-100(-200+), bisexual, fertile; corollas yellow or brown-purple, tubes shorter than to equaling abruptly expanded throats, lobes 5, triangular. Cypselae strongly compressed, obovate to cuneate (margins ciliate, apices usually ± notched except in E. scaposa, faces usually glabrous except in E. scaposa); pappi usually 0, sometimes readily falling or persistent, of 2 bristlelike awns. x = 18. Encelias commonly hybridize, especially in disturbed areas: Encelia farinosa × E. frutescens is common; E. farinosa × E. californica, E. farinosa × E. actoni, E. actoni × E. frutescens, E. frutescens × E. virginensis, and E. farinosa × Geraea canescens have been reported.

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Encelia actoni
Image of Encelia actoni
Encelia asperifolia
Image of Encelia asperifolia
Encelia californica
Image of Encelia californica
Encelia calva
Image of Encelia calva
Encelia canescens
Image of Encelia canescens
Encelia conspersa
Image of Encelia conspersa
Encelia densifolia
Image of Encelia densifolia
Encelia eriocephala
Images
not available
Encelia farinosa
Image of Encelia farinosa
Encelia frutescens
Image of Encelia frutescens
Encelia glandulosa
Images
not available
Encelia halimifolia
Image of Encelia halimifolia
Encelia laciniata
Image of Encelia laciniata
Encelia mexicana
Image of Encelia mexicana
Encelia nutans
Image of Encelia nutans
Encelia oblonga
Image of Encelia oblonga
Encelia oblongifolia
Images
not available
Encelia palmeri
Image of Encelia palmeri
Encelia ravenii
Image of Encelia ravenii
Encelia resinifera
Image of Encelia resinifera
Encelia scaposa
Image of Encelia scaposa
Encelia stenophylla
Image of Encelia stenophylla
Encelia ventorum
Image of Encelia ventorum
Encelia virginensis
Image of Encelia virginensis
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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