. 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. CICHORIACEAE. Vol. III. 18. LYGODESMIA D. Don, Edinb. Phil. Journ. 6: 311. 1829. Perennial or annual glabrous rigid branching herbs, with linear leaves, or the basal and lower ones sometimes broader and pinnatifid, those of the stem very narrow and entire or reduced to linear scales, and middle-sized 3-13-flowered heads of pink or purple flowers, solitary and e
. 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. CICHORIACEAE. Vol. III. 18. LYGODESMIA D. Don, Edinb. Phil. Journ. 6: 311. 1829. Perennial or annual glabrous rigid branching herbs, with linear leaves, or the basal and lower ones sometimes broader and pinnatifid, those of the stem very narrow and entire or reduced to linear scales, and middle-sized 3-13-flowered heads of pink or purple flowers, solitary and erect at the ends of the stem and branches, or sometimes racemose. Involucre cylindric, its principal bracts 5-8, linear, scarious-margined, equal, slightly united at the base, with several very short outer ones. Receptacle flat, naked. Rays truncate and 5-toothed at the apex. Anthers sagittate at the base. Style-branches slender. Achenes linear, smooth or striate. Pappus of copious somewhat unequal simple bristles. [Greek, twig-bundle, from the numerous branches.] About 6 species, natives of western and southern North America. Type species: Prenanthes juncea Pursh. Heads solitary at the ends of the branches; leaves linear or subulate. 1. L. juncea. Heads racemose along the branches; leaves elongated-linear. 2. i. Lygodesmia juncea (Pursh) D. Don. Rush-like Lygodesmia. Fig. 4079. Prenanthes juncea Pursh, Fl. Am. Sept. 498. 1814. Lygodesmia juncea D. Don; Hook. Fl. Bor. Am. 1 : 295. 1833. Perennial by a thick woody root; stems stiff, striate, much branched, 8'-i8' high, the branches erect. Lower leaves linear- lanceolate, rigid, entire, acute or acuminate, ¥-2' long, ¥'-i¥' wide, the upper similar but smaller, or reduced to subulate scales; heads 6"-8" broad, mostly 5-flowered, soli- tary at the ends of the branches; involucre 6"-8" high; achenes narrowly columnar or slightly tapering, truncate at the summit, about 8-nerved or ribbed, 2i"-3
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
