Difference between revisions of "Carex frankii"
Enum. Pl. 2: 498. 1837.
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|genus=Carex | |genus=Carex | ||
|section=Carex sect. Squarrosae | |section=Carex sect. Squarrosae | ||
Latest revision as of 20:44, 5 November 2020
Plants cespitose, short-rhizomatous. Culms 18–80 cm. Leaves 2.5–11.5 mm wide, sparingly scabrous. Spikes 3–7(–9), erect; lateral spikes pistillate with few staminate flowers at base and rarely also at apex, narrowly elliptic, 12–50 × 7–13 mm; terminal spike usually staminate, sometimes gynecandrous, pistillate, or abortive, 6–45 × 2–6 mm. Pistillate scales narrow, with indistinct body, 3.6–9(–11) × 0.1–0.4 mm, apex with long, scabrous awn exceeding perigynium. Staminate scales loosely to irregularly imbricate with tips spreading, linear, 4.3–15 × 0.3–0.8 mm, apex with long, scabrous awn. Perigynia horizontal, 3.5–6 × 1.4–2.6 mm, minutely pustulate; beak 1.3–2.2 mm, smooth. Achenes obovoid, sides strongly concave, 1.4–2.1 × 1–1.4 mm, less than 2 times as long as wide; style deciduous, straight or sinuous.
Phenology: Fruiting summer.
Habitat: Wet meadows and woods, muddy margins of lakes and ponds, roadside ditches
Elevation: 0–1500 m
Distribution
Ont., Ala., Ark., Del., D.C., Ga., Ill., Ind., Iowa, Kans., Ky., Md., Mich., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Va., W.Va.
Discussion
Carex frankii and the similar C. aureolensis are two of the most easily recognized species of sedge; they are identified by the approximate, erect pistillate spikes and the long-awned pistillate scales that exceed the perigynia bodies.
Selected References
None.