Dieteria Nuttall (Q2159)
Dieteria is a taxon with the rank genus within the tribe Astereae
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Dieteria Nuttall
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Dieteria is a taxon with the rank genus within the tribe Astereae
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Statements
taxon/id/Dieteria Nuttall
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Dieteria Nuttall
Dieteria
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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Stems erect to ascending, much branched (when well developed), glabrous or hairy, sometimes stipitate-glandular.
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usually sessile, sometimes basal and proximal cauline petiolate;
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blades 1-nerved, ovate, obovate, oblong, lanceolate, oblanceolate, or linear, margins entire or irregularly serrate to dentate (teeth usually spine-tipped), faces glabrous, canescent, or puberulent, often sparsely stipitate-glandular.
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Heads radiate (sometimes discoid in D. canescens var. shastensis).
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Involucres turbinate, campanulate, or hemispheric, 6–16 × 6–30 mm.
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Phyllaries 25–100 in 3–12 series, appressed, spreading, or reflexed, 1-nerved, lanceolate to linear, unequal, bases indurate, apices herbaceous, usually hairy or stipitate-glandular.
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Receptacles convex, pitted, epaleate.
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Ray-florets 7–60, pistillate, fertile (sterile or 0 in D. canescens var. shastensis);
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corollas white, blue, violet, or purple.
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Disc-florets 15–200, bisexual, fertile;
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corollas yellow, tubes shorter than funnelform throats (both glabrous or glabrate), lobes 5, erect, deltate to lanceolate (usually appressed-hairy);
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style-branch appendages lanceolate.
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Cypselae linear to obovoid, flattened, smooth or 8–12-ribbed, faces glabrous or ± appressed-hairy;
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pappi persistent, of 40–50 white to tawny, barbellate, apically attenuate bristles in 1–3 series.
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stipitate-glandular
sometimes
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stipitate-glandular
often sparsely
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