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FNA | Family List | FNA Vol. 23 | Cyperaceae | Fuirena

7. Fuirena pumila (Torrey) Sprengel, Syst. Veg. 1: 237. 1825.

Fuirena squarrosa Michaux var. pumila Torrey, Fl. N. Middle United States 1: 68. 1824

Herbs annual, cespitose, (8–)20–60 cm. Culms erect or spreading, slender, stiff. Leaves: sheaths hirsute; principal blades linear to lance-linear, 5–12 cm, hirsute-hispid-ciliate, surfaces strigose-hispid or glabrous. Inflorescences in solitary terminal clusters or several terminal clusters, less often from proximal 1–2 nodes, principal involucral bract mostly exceeding compound or cluster. Spikelets lance-ovoid to cylindric, 5–8(–12) mm, apex acute; fertile scales oblong to obovate, 2.5–3 mm; cusp excurved, nearly length of scale, scabridulous; median ribs 3, strong. Flowers: perianth bristles extending at least to base of perianth blades, often near to tips, retrorsely barbellate; perianth blades long-clawed, mostly ovate, base 3–5-ribbed, apex slenderly acuminate, incurved, awned; anthers 1–3, 0.5–0.7 mm. Achenes: stipe slender; body angles wirelike, faces lustrous, deep brown to red-brown, 1 mm; beak slender, stiff, tip papillate. 2n = 46.

Fruiting summer–fall. Moist to wet pond shores, seeps, savannas and swales, moist sandy waste places; 0–200 m; Ont.; Ala., Del., Fla., Ga., Ind., La., Md., Mass., Mich., N.J., N.Y., N.C., R.I., S.C., Tex., Va.


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