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Leaves sessile or petioled, 1-3 Post Date: Thu, 21 Aug 2008 5:22:30 +0000 10 Lactuca Floridana (L) Gaertn, FALSE OR FLORIDA LETTUCE. (I F F 3544) Annual or biennial; stem glabrous, rather stout, leafy up to the large, paniculate inflorescence, 1-2 M high. Leaves sessile or petioled, 1-3 dm long, glabrous above, pubescent on the veins beneath, the lateral segments lanceolate to oval, acute, all usually dentate, or the leaves irregularly lobed ; heads numerous, 6-10 mm broad; rays blue; involucre about 12 mm high. Autor of the post: Undefined 11 Lactuca spicata (Lam) Hitchc Post Date: Thu, 21 Aug 2008 5:09:03 +0000 In moist, open places, southern N Y and Penn to III., Neb, Fla, La and Kans July-Sept. 11 Lactuca spicata (Lam) Hitchc. Autor of the post: Undefined Leaves deeply pinnatifid or lobed Post Date: Thu, 21 Aug 2008 4:53:55 +0000 TALL BLUE LETTUCE. (I F F 3545-) Annual or biennial; stem usually stout, glabrous, 1-35 m - ni g h lea fy up to the large, rather dense panicle. Leaves deeply pinnatifid or lobed, sharply dentate with mucronate-pointed teeth, sessile, or the lower narrowed into margined petioles, glabrous on both sides, or pubescent on the veins beneath, 12-30 cm long, 5-15 cm wide; heads very numerous, about 4 mm broad; rays blue to nearly white; achenes oblong, compressed, narrowed above into a short neck. Autor of the post: Undefined Leaves oblong, sharply denticulate, undivided Post Date: Thu, 21 Aug 2008 4:43:26 +0000 In moist soil, Newf to Manitoba, south to N Car, Tenn, Iowa and S Dak July-Oct. Lactuca spicata integrifblia (A Gray) Britton. Leaves oblong, sharply denticulate, undivided, or some of the lower ones pinnatifid. Autor of the post: Undefined its principal bracts 5-8, linear Post Date: Thu, 21 Aug 2008 4:24:14 +0000 N Car to Mich 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~i2-flowered heads of pink or purple flowers, solitary and erect at the ends of the stem and branches, or sometimes race- mose. Involucre cylindric. its principal bracts 5-8, linear, scarious-margined, equal, slightly united at the base, with several very short outer ones. Autor of the post: Undefined Anthers sagittate at the base Post Date: Thu, 21 Aug 2008 4:10:23 +0000 Receptacle flat, naked. Rays truncate and 5 -toothed at the apex. Anthers sagittate at the base. Autor of the post: Undefined Pappus of copious somewhat unequal Post Date: Thu, 21 Aug 2008 3:56:53 +0000 Style-branches slender. Achenes linear, smooth or striate. Pappus of copious somewhat unequal simple bristles. Autor of the post: Undefined Heads racemose along the branches Post Date: Thu, 21 Aug 2008 3:42:28 +0000 [Greek, twig-bundle, from the numer- ous branches. ] About 6 species, natives of western and southern N A Heads solitary at the ends of the branches; leaves linear or subulate, I L, juncea. Heads racemose along the branches ; leaves elongated-linear. Autor of the post: Undefined RUSH-LIKE LYGODESMIA Post Date: Thu, 21 Aug 2008 3:29:47 +0000 2 L rostrata. I Lygodesmia juncea (Pursh) D Don. RUSH-LIKE LYGODESMIA. Autor of the post: Undefined Plains, Minn, to Mont, Mo Post Date: Thu, 21 Aug 2008 3:19:34 +0000 (I F F 3546) Perennial by a thick woody root; stems stiff, striate, much branched, 20-45 cm - hg n ie branches erect. Lower leaves linear-lanceolate, rigid, entire, acute, or acuminate, 1-25 cm long, 1-3 mm wide, the upper similar but smaller, or reduced to subulate scales; heads 12-16 mm broad, mostly 5-flowered; involucre I2-l6 mm high; achenes narrowly columnar or slightly tapering, truncate at the summit, about 8 -nerved or ribbed; pappus light brown. Plains, Minn, to Mont, Mo, Kans and N Mex June- Aug 2 Lygodesmia rostrata A Gray. 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