dcsimg
Creatures » » Plants » » Dicotyledons » » Sedges »

Carex aquatilis var. substricta Kük.

Comprehensive Description

provided by North American Flora
Carex substricta (Kiikenth.) Mackenzie, in Rydb. Fl. Rocky Mts. 139.
"Carex aquatilis Wahl." Dewey, Am. Jour. Sci. 10: 267. pi. E,f. 16. 1826; Boott. 111. Carex 163, in
part. pi. 542. 1867. Carex aquatilis var. substricta Kiikenth. in Engler, Pflanzenreich 4=»: 309. 1909. (Type probably
from Junius, Seneca County, New York.)
Cespitose in large clumps, sending forth long, stout, light-brown or straw-colored, scaly, horizontal stolons, the culms erect, stout below, rather slender above, 5-10 dm. high, sharply triangular, papillate, smooth or roughened above, exceeding or shorter than the leaves, dullreddish-brown or reddish-tinged at base, strongly phyllopodic, the dried-up leaves of the previous year very conspicuous; sterile shoots often aphyllopodic; leaves with well-developed blades 8-15 to a fertile culm, on the lower third, the upper not bunched, often strongly septatenodulose, the blades flat above, strongly channeled and thick and stiff at the base, glaucousgreen, papillate, very long-tapering, erect to spreading, usually 2.5-5 dm. long, 2.5-8 mm. wide, much roughened towards the apex, the sheaths smooth dorsally, the lower very stiff and strongly keeled, dull-white and yellowish-brown-spotted ventrally, the ligule longer than wide ; staminate spikes 1-3, linear, the uppermost usually strongly peduncled, 3-5 cm. long, 3-5 mm. wide, the others sessile and shorter, the scales oblong-obovate or oblanceolate, obtuse or acutish, brownish with prominent light mid vein and white-hyaline margins; pistillate spikes 2-6, the upper usually staminate at apex, distant or the upper more or less approximate, erect, sessile or nearly so, or the lowest more or less strongly peduncled, linear-cylindric, usually 3-6 cm. long, 4.5-7 mm. wide, densely flowered or somewhat attenuate at base, appressed-ascending or in age spreading in several to many rows; lowest bract leaf -like, exceeding culm, sheathless or nearly so, not dark-auricled, the upper shorter; scales ovate to oblongovate, 1-2 mm wide, obtuse, mucronate, acute or acuminate, narrower than and from much shorter than to strongly exceeding the perigynia, reddish-brown with broad green 3-nerved center and very narrow hyaline margins, not puncticulate and not enveloping perigynia; perigynia much flattened, unequally biconvex, not at all turgid, obovate, 2.75-3.25 mm. long, 1.5-2.25 mm. wide, 2-ribbed ''the marginal) and obscurely few-nerved, puncticulate, redstriate-dotted and glandular, membranaceous, greenish-straw-colored, rounded and shortstipitate at base, smooth above, rounded at apex and abruptly apiculate, the beak entire, 0.1-0.3 mm. long, not dark-colored; achenes lenticular, nearly orbicular, 1.5 mm. long, about as wide, nearly filling lower two thirds of perigynium, brownish-black, nearly sessile, abruptly short-apiculate, jointed with the short, straight, slender, more or less exserted style; stigmas 2, slender, whitish, blackish in age.
Type locality (of C. aqualilis var. subslricta Kukenth., on which C. substricla is based): New York, probably Junius, Seneca County. Sartwell Exsic. No. 56 is taken as the type.
Distribution: Swamps and wet meadows in calcareous districts, Newfoundland to Washington, and southward to northwestern New Jersey, Indiana, and Nebraska. (Specimens examined from Newfoundland, Quebec, Nova Scotia, New Brunswick, Maine, Vermont, Massachusetts, Connecticut, New York, New Jersey, Ontario, Michigan, Ohio, Indiana, Wisconsin, Minnesota, Iowa, Manitoba, Saskatchewan, Alberta, North Dakota, Nebraska, Washington.)
license
cc-by-nc-sa-3.0
bibliographic citation
Kenneth Kent Mackenzie. 1935. (POALES); CYPERACEAE; CARICEAE. North American flora. vol 18(7). New York Botanical Garden, New York, NY
original
visit source
partner site
North American Flora