. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 89. Carex rupestris All. Rock Sedge. Fig. 956. Carex rupestris All. Fl. Ped. 2 : 264. pi. 92. f. 1. 1785. Carex Drummondiana Dewey, Am. Journ. Sci. 29: 251. 1836. Culms slender, obtusely 3-angled, erect, i'-6' tall. Leaves i"-l" wide, involute in drying, often curved, shorter than or exceeding the culm; bract wanting; spike solitary, androgynous, slen
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 89. Carex rupestris All. Rock Sedge. Fig. 956. Carex rupestris All. Fl. Ped. 2 : 264. pi. 92. f. 1. 1785. Carex Drummondiana Dewey, Am. Journ. Sci. 29: 251. 1836. Culms slender, obtusely 3-angled, erect, i'-6' tall. Leaves i"-l" wide, involute in drying, often curved, shorter than or exceeding the culm; bract wanting; spike solitary, androgynous, slender, 6"-ia" long, the pistillate part loosely few-flowered; perigynia erect, smooth, oblong-obovoid, triangular, long-stipitate, firm, faintly nerved, ii"-2" long, abruptly very short- beaked, the beak truncate; scales purple-brown, ovate, obtuse or subacute, wider and longer than the perigynia; stigmas 3. Quebec and Greenland to British Columbia, south in the Rocky Mountains to Colorado. Also in northern Europe and Asia. Summer. 90. Carex filifolia Nutt. Thread-leaved Sedge. Fig. 957. Carex filifolia Nutt. Gen. 2: 204. 1818. Densely tufted, pale green and glabrous, culms slen- der but wiry, smooth, erect, 3'-i4' tall, equalling or longer than the leaves. Leaves filiform, rather stiff, scarcely I" wide, their sheaths persistent and ultimately fibrillose; spike solitary, erect, bractless, androgynous, 3"-iS" long, the pistillate part about 2" in diameter; perigynia 5-10, ovoid-oval, obtusely triangular, nearly nerveless, closely enveloping achene, puberulent at least above middle, ih" long, rather more than J" thick, tipped by a short cylindric hyaline entire beak; scales very broad and enveloping perigynia, concave with wide white scarious margins, obtuse or cuspidate, about as long as the perigynia; stigmas 3. In dry soil, Manitoba to British Columbia, south to Kansas, Colorado and California. Carex scirpoidea Michx.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
