Plants 5-25 cm. Leaf blades: basal 5-20 mm, cauline 0.5-2.5 mm, margins shallowly to deeply incised, especially toward base. Flowers: petals 1-2.5 mm, equaling or slightly longer than sepals, margins minutely 2-5-toothed near base. Seeds 0.5 mm.
Mostly 1-2 dm, with 1-many wiry stems from the base; basal lvs 0.5-2 cm long overall, with long, slender petiole and short, abruptly expanded blade 1.5-4 mm wide; rosette beset with slender, chaffy scales amongst the lvs; nodal scale-lvs 1-2 mm, commonly with a few fringing bristles toward the base; sep 1-1.5 mm, barely surpassed by the fr. Sandhills and dry sandy pine woods on the coastal plain; se. Va. to Fla. and La. Apr.-Aug. Ours is the widespread var. setacea. (S. filiformis)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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