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Image of thrift mock goldenweed
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Thrift Mock Goldenweed

Stenotus armerioides Nutt.

Description

provided by eFloras
Plants cespitose, sometimes densely so, 2–29 cm; taproots stout. Stems proximally clothed with marcescent leaves, usually glabrous, sometimes sparsely scabrous, usually viscid, sometimes eglandular. Leaves basal; narrowly petiolate; blades , 1- or 3-nerved, linear to narrowly oblanceolate or spatulate, 17–90 × 1–7(–12) mm, rigid, attenuate, margins sometimes ciliate (often minutely), viscid-glandular veins conspicuously raised abaxially, apices acute, faces ± scabrous or glabrous, gland-dotted, viscid. Heads 1–2(–4). Peduncles 10–130 mm, smooth and viscid. Involucres campanulate to hemispheric, 8–21 × 6–14 mm. Phyllaries 12–26 in 3 series, 1- (or 3)-nerved (often ± keeled), strongly unequal, outer ovate to oblong, 3–8 × 1.5–4(–7.5) mm , inner oblong, 5.5–10 × 1.5–3.5 mm, proximally indurate, distally chartaceous, green portions about as long as broad, margins scarious, sometimes broadly so, entire, apices obtuse to rounded, minutely apiculate, viscid abaxially. Ray florets 5–15; laminae elliptic to oblong, 5.5–18.5 × 2–6 mm. Disc florets 21–39; corollas funnelform to vase-shaped, 4–9 mm, tubes glabrous or rarely sparsely hairy, lobes 0.7–1.3 mm, ca. 1 / 8 – 1 / 6 length of corollas; anthers 1.8–3.5 mm, style-branch appendages subulate to lanceolate, 1.2–2.3 × 0.5 mm, stigmatic lines 0.6–1.9 mm, 1 / 2 – 3 / 4 as long as style-branch appendages. Cypselae 2–6 mm, lengths 1 / 2 – 3 / 4 disc corollas, faces sericeous; pappus bristles 60–75, 3.5–7.5 mm, nearly equaling disc corollas.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 171, 174, 175, 176 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Synonym

provided by eFloras
Haplopappus armerioides (Nuttall) A. Gray
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 171, 174, 175, 176 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras