Description
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Perennials, 30–80 cm, cespitose; with cormoid, woody caudices. Stems 1–10+, ascending to erect (light to dark brown), glabrous or densely canescent distally. Leaves (green to graysih) soft to firm; basal withering by flowering, sessile, blades (1–3-nerved) elliptic-lanceolate, 10–43 × 5–15 mm, bases attenuate, margins usually entire, rarely remotely serrate, piloso-ciliate, apices acute to obtuse, faces silvery silky-pilose to sparsely pilose; proximal cauline withering by flowering, sessile, blades oblanceolate, 20–35 × 5–15 mm, bases rounded, subclasping, margins entire, scabrous to silky-pilose, apices acute to obtuse, cuspidate mucronate, faces ± densely silky; distal sessile, blades usually oblong to lanceolate, rarely ovate, 9–15 × 1.8–5 mm, reduced distally, bases cuneate, margins entire, apices acute, mucronate, faces ± densely silky or sparsely strigose, sometimes glabrate (var. devestitum). Heads in narrow, paniculiform (virgate) arrays (1–3(–5) per branch). Peduncles densely hairy, bracts becoming linear, grading into phyllaries. Involucres campanulate to narrowly campanulate, 5–7 mm. Phyllaries in 3–5 series, appressed, lanceolate-oblong, strongly unequal, bases (tan) ± indurate, margins scarious proximally, green distally, green zones restricted to apex, obscured by hair, apices usually acute, sometimes acuminate, usually mucronate, sometimes subspinulose, faces ± densely silky. Ray florets 8–12; corollas rose-purple, rarely white, laminae 4–9 × 1–1.5 mm. Disc florets (9–)11–17(–21); corollas pink turning purple, 4.5–6 mm, tubes shorter than narrowly funnelform throats (thinly puberulent), lobes triangular, 0.4–0.7 mm. Cypselae obovoid, not compressed, 2.5–3.5 mm, 7–10-nerved, faces densely strigose; pappi tan, (3.5–)4–6 mm.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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Aster concolor Linnaeus, Sp. Pl. 2: 874. 1753; Lasallea concolor (Linnaeus) Semple & Brouillet; Virgulus concolor (Linnaeus) Reveal & Keener
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Symphyotrichum concolor: Brief Summary
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Symphyotrichum concolor (formerly Aster concolor) is a species of flowering plant in the family Asteraceae native to the Atlantic coastal plain and Piedmont areas of the eastern United States, as well as the Bahamas. Commonly known as eastern silvery aster, it is a perennial, herbaceous plant that may reach 30 to 80 centimeters (12 to 31 inches) in height. Leaves are a grayish-green and have a silky look and feel. The flowers have 8–12 rose-purple, rarely white, ray florets, and pink then purple disk florets.
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