. A flora of northwest America [microform] : containing brief descriptions of all the known indigenous and naturalized plants growing without cultivation north of California, west of Utah, and south of British Columbia. Botany; Phanerogams; Botanique; Phanérogames. UMBELLIFER^. .NOELICA. 8ELINUM. A. Lyallii Wataon Proc. Am. Acad, xvii, 374. Stout, 4-5 feet liiirli, glabrous; leaves once or twice ternate then quinate, the uppermost re- duced to large inflated petioles; leaflets ovate to lanceoUte. acute or acutLsh, unequally dentate; umbel unequally many-rayed with neither invohure nor involuce
. A flora of northwest America [microform] : containing brief descriptions of all the known indigenous and naturalized plants growing without cultivation north of California, west of Utah, and south of British Columbia. Botany; Phanerogams; Botanique; Phanérogames. UMBELLIFER^. .NOELICA. 8ELINUM. A. Lyallii Wataon Proc. Am. Acad, xvii, 374. Stout, 4-5 feet liiirli, glabrous; leaves once or twice ternate then quinate, the uppermost re- duced to large inflated petioles; leaflets ovate to lanceoUte. acute or acutLsh, unequally dentate; umbel unequally many-rayed with neither invohure nor involucels: rays >^-4 inches long; fruiting pedicels thick, a line or less long: fruit oblong to obovate, glabrous 2-3 lines long; lateral wingn as broad or broader than the body, oil-tubes 2 on the commissure: seed-lace broadly concave. In the mountains, Urejjon to Brit. Columbia, Montana and Idaho. A. argata Nutt. 1. c. Stout 2-4 feet high, glabrous or the inflores- cence sometimes minutely puberulent: leaves ternate then pinnate or bipinnate; leaflets mostly small, ovate to lanceolate, rather acute, serrate: um'iel ra'iher equally many-rayed with neiti^er involucre nor involucels: rays 1-3 inches long; pedicels 3-5 lines long, fruit oblong-elliptical, glab- rous 3-4 lines long, dorsal and intermediate ribs thick and slightly elevat- ed ; lateral wings very corky, thick and broad as the much flattened body or broader, oil-tubes 2 on thecommissure (sometimes 4 in 2 distinct pairi«): seed sulcate beneath the oil-tubes with plane face. Along high mountain streams, Oregon and "Washington. A. Hendersoni C. & R. Bot. Gaz. xiii, 80. Very stout densely tomen- tose throughout, especially the inflorescence and whitened lower surface of the leaves: leaves quinate then pinnate; leaflets thicJ^,. broadly ovate, 2-4 inches long by 2-3 broad, obtuse, serrate: umbel equally many rayed with no involucre and involucels of numerous linear-acuminate bractlets: rays 1-2 inches long: pedicel
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1903
