390 CYPERACE^. 



linear-lanceolate, 6 — lO-flowered ; scales loose, ovate, obtnse or emarginatc. 

 C. mariscoides Ell. 



Dry soils. N. Y. to Flor. W. to Miss, and Texas. Aug. %.. — Culms about ^ 

 foot high, cespitose, often diverging, tuberous at base. Leaves linear, dull-green. 

 SpUcelets acute. Scales yellowish-green, with a scarious margin. 



Slender-stalked Galingale. 



9. C. Graiji Torr. : culm filiform ; umbel 4 — 6-rayed, somewhat erect ; 

 heads composed of 5 — 10 spikelets, loose ; spikelets linear-lanceolate, com- 

 pressed, 5 — 7-flowered ; scales ovate, rather obtuse when old, loosely im- 

 bricate. 



Sandy soils. N. Y. R. I. Mass. N. J. Aug. %.— Culms 8—12 inches high, 

 cespitose, tough auij rigid. Leaves all radical, setaceous, scarcely half a line 

 wide, /nvo/ttcre setaceous. iSpiTreZeis chestnut-colored, slightly convex. Differs 

 from the preceding in its very slender culm and leaves, and in its many-rayed 

 umbel. Gray's Galingale. 



10. C. dentatus Torr. : rhizoma creeping, tuberiferous ; umbel compound, 

 of 4 — 7 somewhat erect rays ; involucre 3-leaved, longer than the umbel ; 

 spikelets 3 — 6 on each partial ray, oblong or ovate-lanceolate, much com- 

 pressed, 6 — 30-flowered ; scales very acute or mucronate, keeled. C. par- 

 vijlorus Mtihl. 



Swamps and marshes. N. Y. to Flor. Aug. %. — Rhizoma extensively creep- 

 ing. Culm 6 — 12 inches high. Leaves somewhat rigid, pale yellowish-green. 

 Scales with the sides reddish brown, the keel green. Toothed Galingale. 



11. Cinflexiis MiM. : umbel contracted, 1 — 3-rayed; involucre 3-leaved, 

 very long ; spikelets collected into ovoid heads, oblong-linear, about 8-flow- 

 ered; scales cuspidate, squarrose at the tip: stamen 1. C. uncinatus 

 Pursh. 



Banks of streams. Throughout the U. S. N. to lat. 52°. Aug., Sept. (D? 

 — Culms 2 — 3 inches high, densely cespitose. Leaves linear, as long as the 

 culm. Umbel often sessile. Spikelets yellowish, in heads of 8 — 16 or more. It 

 has a strong and durable odor like that of Trifolium coeruleum. , 



Dwarf Odorous Galingale. 



1 2. C. Schweinitzii Torr. : culm triquetrous, with rough angles ; umbel 

 pimple, the rays elongated ; spikelets 6 — 8, lanceolate, alternate, approxi- 

 mate, 6 — 8-flowered, with a setaceous bract at the base of each ; scales 

 ovate, acuminate, mucronate, keeled. 



Dry sandy shore of Lake Ontario, near Braddock's Bay. W. to St. Peters 

 River and Ark. Aug. — Culm 8 — 18 inches high, slender, the upper part rough 

 on the angles. Leaves very narrow, shorter than the culm. Spikelets irregu- 

 larly arranged, forming a loose oblong head. Scales rather rigid, yellowish. 



Schweinitz's Galingale. • 



*** In7ier scales herbaceous, free. 



13. C. erythrorhizos Muhl.: umbel compound, many-rayed; involucre 



4 — 5-leaved, very long ; spikes cylindric-oblong, nearly sessile ; spikelets 



very numerous, spreading horizontally, terete-compressed, many-flowered ; 



scales lanceolate, mucronate. C. tenuiftorns Ell. * 



Wet places. Penn. to Geor. and Louis. (X). — Culm 2 — 3 feet high, obtusely 

 triangular, smooth. Leaves shorter than the culm. Spikelets linear, 10 — 18- 

 flowered. Scales chestnut colored, shining. Red-rooted Galingale. 



