Ericameria Nuttall (Q2168)
Ericameria is a taxon with the rank genus within the tribe Astereae
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Ericameria Nuttall
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Ericameria is a taxon with the rank genus within the tribe Astereae
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Statements
taxon/id/Ericameria Nuttall
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Ericameria Nuttall
Ericameria
Nuttall
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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Shrubs (trees in Ericameria parishii var. parishii), 10–500 cm.
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Stems usually erect to ascending, rarely prostrate, fastigiately or intricately branched (bark typically tan to reddish-brown, becoming gray, twigs usually green to gray or yellowish), glabrous or sparsely to densely hairy (often tomentose), often gland-dotted, sometimes resinous or stipitate-glandular.
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petiolate or sessile;
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blades (green to grayish; midnerves obscure to prominent, sometimes with 2 collateral veins), cuneate, elliptic, filiform, lanceolate, linear, oblanceolate, obovate, or spatulate (adaxially sulcate, concave, or flat), margins entire (sometimes undulate or crisped; apices acute to rounded or retuse), faces glabrous or sparsely to densely hairy (often tomentose), often stipitate-glandular, sometimes gland-dotted or resinous.
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Heads radiate or discoid, borne singly or in cymiform or racemiform, sometimes highly branched and paniculiform or thyrsiform, arrays.
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Involucres campanulate, cylindric, hemispheric, obconic, or turbinate, (4–19+ ×) 2–18 mm.
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Phyllaries 8–60 in 2–7 series (often in vertical ranks), 1-nerved (midnerves obscure or evident, sometimes enlarged subapically and glandular) ovate, lanceolate, or elliptic, strongly unequal to subequal, outer often herbaceous or herbaceous-tipped, otherwise mostly chartaceous, (apices erect, spreading, or reflexed, acute or acuminate to cuspidate or obtuse), faces sometimes stipitate-glandular, often resinous.
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Receptacles slightly convex, pitted, epaleate.
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Ray-florets 0, or 1–18, pistillate, fertile;
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corollas usually yellow (white in E. gilmanii and E. resinosa), (laminae elliptic to oblong, apices shallowly notched or toothed).
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Disc-florets 4–70, bisexual, fertile;
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corollas usually yellow (white in E. gilmanii and E. resinosa), tubes shorter than narrowly funnelform to campanulate throats, lobes 5, erect to spreading or reflexed, deltate to triangular;
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style-branch appendages lanceolate to subulate.
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Cypselae (tan to reddish-brown) usually prismatic, sometimes cylindric, ellipsoid, obconic, or turbinate, 5–12-ribbed, faces glabrous or sparsely to densely hairy, sometimes gland-dotted;
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pappi persistent or tardily falling, of 20–60 whitish or tan to reddish, subequal, fine, barbellate, apically attenuate bristles in 1 series.
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branched
fastigiately; intricately
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glabrous or
sparsely densely hairy
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glabrous or
sparsely densely hairy
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stipitate-glandular
sometimes
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glabrous or
sparsely densely hairy
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