23. Carex Aggregata Mackenzie. Glomerate Sedge

Fig. 890

Carex agglomerata Mackenzie, Bull. Torr. Club 33: 442. 1906. Not C. B. Clarke, 1903.

Carex aggregata Mackenzie, Bull. Torr. Club 37: 246. 1910.

Culms slender, erect, triangular, rough beneath head only, 2° or less tall. Leaves 1 1/2"-2" wide, shorter than the culm; bracts bristle-form, elongated but shorter than the head; spikes numerous, androgynous, ovoid or subglobose, densely aggregated, even the lowest but slightly separate, the head I2"-i8" long, 5" thick; perigynia ascending or spreading, a little more than 1 1/2" long, the body ovate, 1" wide, nerved on outer, nerveless on inner face, tapering into a 2-toothed beak about length of body; scales ovate, hyaline with green midrib, acuminate to cuspidate, narrower than and about length of body of perigynia; stigmas 2.

In dry woods, District of Columbia to Missouri. May-June.

24. Carex Sparganioides Muhl. Bur-Reed Sedge

Fig. 891

C. sparganioides Muhl.; Willd. Sp. PI. 4: 237. :80s.

Rather dark green with white and green mottled sheaths, culms stout or slender, rough above, sharply 3-angled, 1/2°-3° tall. Leaves broad and flat, 2 1/4"-5" wide, usually shorter than the culm, their lower part septate-nodulose as are the loose membranous transversely rugulose sheaths; spikes 6-12, deep green, oblong or subglobose, 2 1/2"- 4" in diameter, 15-50-flowered, the upper aggregated, the lower 2-4 commonly separated, the lower bracts developed; perigynia flat, ovate, 1 1/2" long, 1" wide, spreading or radiating, narrowly wing-margined to the rounded base, faintly few-nerved on the outer face, the rough 2-toothed beak one-half the length of the body; scales ovate, hyaline, acute or cuspidate, equalling body of perigynia; stigmas 2.

In woods and thickets, New Hampshire to Ontario and Michigan, south to Virginia, Kentucky and Kansas. Ascends to 2100 ft. in Virginia. June-Aug.

24 Carex Sparganioides Muhl Bur Reed Sedge 89124 Carex Sparganioides Muhl Bur Reed Sedge 892

25. Carex Alopecoidea Tuckerm. Foxtail Sedge

Fig. 892

Carex cephalophora var. maxima Dewey, Am. Journ. Sci.

43: 92. 1842. Carex alopecoidea Tuckerm. Enum. Meth. 18. 1843.

Light green, culms stout but soft, sharply 3-angled, flattened, narrowly winged, erect or reclining, 1 1/2°-3° long, roughish above. Leaves flat, 1 1/2"-4" wide, shorter than or exceeding the culm, the sheath band strongly reddish-dotted but not transversely rugulose; bracts almost filiform, commonly short; spikes androgynous, several or numerous (10 or fewer) in a compact or somewhat interrupted head V-2' long, 4"-5" thick; perigynia ovate or ovate-lanceolate, rounded at base, short-stipitate, 1 1/2"-2" long, green or at maturity, yellowish brown, faintly few-nerved on the outer side, the tapering rough 2-toothed beak nearly as long as the body; scales ovate, brownish-tinged, acuminate or short-awned, about as long as the perigynia; stigmas 2.

In meadows, Maine to Pennsylvania and Michigan. Local. June-July.