1.
Sericocarpus linifolius
(Linnaeus) Britton, Sterns & Poggenburg, Prelim. Cat. 26. 1888, not Britto. 1888.
Narrow-leaf white-topped aster
Conyza linifolia
Linnaeus, Sp. Pl. 2: 861. 1753, not
Aster
linifolius
Linnaeus;
A. solidagineus
Michaux;
Sericocarpus solidagineus
(Michaux) Nees
Plants
22—75 cm.
Stems
erect (stout, branched), glabrate.
Leaves:
basal and proximalmost cauline withering by flowering; cauline sessile; blades linear, 10—80 × 1—10 mm, margins entire, apices acuminate, faces glabrate.
Heads
2—4 per branch, in broadly corymbiform arrays.
Peduncle bracts
broadly lanceolate to narrowly ovate, glabrate.
Involucres
4—6 mm.
Phyllaries
in 3—4 series, outer 2—4 mm, mid 3—4 mm, glabrate.
Ray florets
2—6; tubes 2—4 mm, laminae 4—11 mm.
Disc florets
5—15; corollas 2—4 mm, lobes 1—2 mm.
Ovaries
obconic, 0.8—1.3 mm, densely strigose;
pappi:
inner series 3—6 mm.
2
n
= 18.
Flowering mid summer—early fall. Dry to moist sandy, clay, and gravelly soils of open deciduous and pine woods , oak and pine barrens, roadsides, fields; 0—900 m; Ala., Conn., Del., D.C., Ga., Ind., Ky., La., Md., Mass., Miss., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Va., W.Va.
