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Pluchea longifolia
Nash
Family:
Asteraceae
Flora of North America
Resources
Guy L. Nesom in Flora of North America (vol. 19, 20 and 21)
Perennials,
60-150(-250) cm; fibrous-rooted.
Stems
sparsely arachnose.
Leaves
(crowded) sessile; blades oblong to elliptic, lance-ovate, or ovate, mostly 8-20 × 3-7 cm (bases clasping to subclasping), margins coarsely and irregularly toothed, abaxial faces villous and sessile-glandular, adaxial hirtellous and sessile-glandular.
Heads
in corymbiform arrays.
Involucres
cylindro-campanulate, 9-12 × 6-9 mm (lengths mostly 2 times diams.).
Phyllaries
creamy white, powdery puberulent, sometimes sparsely glandular (mid phyllaries 2.5-3 mm wide).
Corollas
creamy white.
Pappi
persistent, bristles basally connate. Flowering Jun-Oct(-Nov). Brackish to fresh swamps, marshes, hammocks, lake shores, ditches, and canals; 0-10 m; Fla.
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