Symphyotrichum plumosum (Small) Semple

Symphyotrichum plumosum is known only from Franklin County. It differs from S. concolor var. concolor in its long-acuminate, recurved to reflexed phyllaries. No intermediates with S. concolor were seen in the field.

Perennials, 40–100 cm, cespitose, eglandular; with cormoid, woody caudices. Stems 5–10+, erect or arching (light to dark brown), proximally sparsely to moderately finely woolly-pilose (hairs spreading to ascending), more densely so distally. Leaves (grayish) soft; basal withering by flowering, sessile, blades (1–3-nerved) elliptic-lanceolate, 20–40 × 10–20 mm, bases attenuate, margins usually entire, rarely remotely serrate, piloso-ciliate, apices acute to obtuse, faces silvery piloso-silky; proximal cauline withering by flowering, sessile, blades oblanceolate, 20–30 × 4–8 mm, bases rounded, subclasping, margins entire, scabrous to silky-piloso-ciliate, apices acute to obtuse, cuspidate-mucronate, faces moderately strigillose; distal sessile, blades lanceolate to narrowly ovate, 8–15 × 2.5–5 mm, reduced distally, bases cuneate, margins entire, apices acute, mucronate, faces moderately, finely lanoso-strigose. Heads radiate, in narrow, paniculiform (wand-shaped) to sometimes compact, racemiform arrays (1(–3) per branch). Peduncles densely hairy, bracts linear, grading into phyllaries. Involucres campanulate, 7–9 mm. Phyllaries in 3–4 series, spreading to reflexed, linear, unequal, bases (tan) ± indurate, margins scarious proximally, green distally, green zones foliaceous, apices acute, faces moderately woolly-strigose. Ray florets 7–12; corollas rose-purple, laminae 6–9 × 1–2 mm. Disc florets 14–20; corollas pink turning purple, 5–6 mm, tubes shorter than narrowly funnelform throats (thinly puberulent), lobes triangular, 0.3–0.5 mm. Cypselae fusiform-obovoid, not compressed, 2–3 mm, 6–8-nerved, faces densely strigose; pappi tan to yellowish tan, (5.5–)6.5–8 mm. 2n = 8.

Aster plumosus Small, Bull. Torrey Bot. Club 51: 387. 1924; Symphyotrichum concolor (Linnaeus) G. L. Nesom var. plumosum (Small) Wunderlin & B. F. Hansen

Symphyotrichum plumosum (formerly Aster plumosus) is a species of flowering plant in the family Asteraceae endemic to Florida in the United States. Commonly known as plumose aster, it is a perennial, herbaceous plant that may reach 40 to 100 centimeters (1+1⁄4 to 3+1⁄4 feet) tall. Its flowers have rose-purple ray florets and yellow turning to purple disk florets. It is of conservation concern.

Symphyotrichum plumosum là một loài thực vật có hoa trong họ Cúc. Loài này được (Small) Semple mô tả khoa học đầu tiên năm 2002.