. 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 102nd meridian. Botany. 2. Arabis lyrata L. Lyre-leaved Rock-cress. Fig. 2070. Arabis lyrata L. Sp. PI. 665. 1753- Cardaminc spathulata Michx. Fl. Bor. Am. 2: 29. 1803. Arabis lyrala occidcntalis S. Wats.; Robinson in Gray & Wats. Syn. Fl. i: Part i, 159. 1895. Tufted, perennial or biennial, erect, 4'-i2' high, gla- brous above, pubescent below, or sometimes glabrous throughout. Basal le
. 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 102nd meridian. Botany. 2. Arabis lyrata L. Lyre-leaved Rock-cress. Fig. 2070. Arabis lyrata L. Sp. PI. 665. 1753- Cardaminc spathulata Michx. Fl. Bor. Am. 2: 29. 1803. Arabis lyrala occidcntalis S. Wats.; Robinson in Gray & Wats. Syn. Fl. i: Part i, 159. 1895. Tufted, perennial or biennial, erect, 4'-i2' high, gla- brous above, pubescent below, or sometimes glabrous throughout. Basal leaves lyrate-pinnatifid, 1-2' long, spatulate or oblanceolate. pubescent or glabrous; stem- leaves entire or dentate, spatulate or linear, i'-i' long; pedicels slender, ascending, 3"-4" long in flower, elongating in fruit; flowers pure white, 3''-4"^broad; petals much exceeding the calyx; pods_ 9"-l5" long, linear, ascending, less than i" broad, their valves firm, nerved; style I" long or less; seeds in I row, oblong, i" long, wingless. Rocky and sandy places, Ontario to Connecticut, Vir- ginia and Tennessee, west to Manitoba, Alaska, British Co- lumbia and Missouri. Ascends to 2500 ft. in \irginia. Also in Japan. April-Sept. 3. Arabis arenicola (Richards.) Gelert. Arctic Rock-cress. Fig. 2071. 'cola Richards.; Hook. Fl. Bor. Am. i: 67. ifusum J. Vahl, Fl. Dan. pi. 2297. Entrema c 1833. Shymbriu 1840. A. hiimifusa S. Wats. Proc. Am. Acad. 25: 124. 1890. A. arenicola Gelert, Bot. Tidskr. 21: 270. 1898. Perennial from a slender root, somewhat pubes- cent at least below, or entirely glabrous, the stems diffuse or ascending, slender, mostly simple, 3'-6' long. Leaves spatulate or oblong, nearly entire, 4"-S" long, l"-2" wide, the lower petioled, the upper sessile; flowers purplish or white, about 3" broad; style very short; pods linear, flat, at length drooping, 8"-i2" long, rather more than i" wide, the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
