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FNA | Family List | FNA Vol. 26 | Iridaceae | Sisyrinchium

20. Sisyrinchium fuscatum E. P. Bicknell, Bull. Torrey Bot. Club. 26: 225. 1899.

Sisyrinchium arenicola E. P. Bicknell; S. farwellii E. P. Bicknell; S. incrustatum E. P. Bicknell; S. rufipes E. P. Bicknell; S. tenellum E. P. Bicknell

Herbs, perennial, cespitose, yellowish green to olive green when dry, to 5.3 dm, not glaucous. Stems branched, with 1 node, 1–1.7 mm wide, glabrous, margins entire, similar in color and texture to stem body; internode (20–)23–47 cm, longer than leaves, with 1–5 branches. Leaf blades glabrous, bases becoming fibrous, persistent in tufts. Inflorescences borne singly; spathes green, obviously wider than supporting branch, glabrous, keels entire; outer 12–18 mm, 0.9 mm shorter to 1.7 mm longer than inner, tapering evenly towards apex, margins basally connate 2.1–4 mm; inner with keel straight, hyaline margins 0.2–0.4 mm wide, apex acute to obtuse, ending at or to 0.5 mm proximal to green apex. Flowers: tepals blue to bluish violet, bases yellow; outer tepals 7.9–11.6 mm, apex emarginate, aristate; filaments connate ± entirely, stipitate-glandular basally; ovary similar in color to foliage. Capsules light to medium brown, ± globose, 2.9–4.3 mm; pedicel erect to ascending. Seeds globose to obconic, lacking obvious depression, 1–1.5 mm, rugulose. 2n = 32.

Flowering spring--early summer. Marshy areas, moist pine barrens; 0--200 m; N.S.; Ala., Conn., Del., Fla., Ga., Md., Mass., Miss., N.J., N.Y., N.C., S.C., Va.


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