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Achenes narrowed at the summit Post Date: Fri, 22 Aug 2008 19:21:47 +0000 Achenes truncate, not beaked ; flowers yellow. 14 Sonchus. Achenes narrowed at the summit, or beaked ; flowers blue or yellow. Autor of the post: Undefined Achenes terete, not narrowed either Post Date: Fri, 22 Aug 2008 19:03:51 +0000 15 Lactuca. (b) Achenes cylindric, or prismatic. Achenes terete, not narrowed either at the base or summit ; flowers pink or purple. Autor of the post: Undefined Achenes slender-beaked Post Date: Fri, 22 Aug 2008 18:45:23 +0000 16 Lygodesmia. Achenes narrowed at the base, narrowed or beaked at the summit ; flowers yellow. Achenes slender-beaked. Autor of the post: Undefined 17 Agoseris Post Date: Fri, 22 Aug 2008 18:29:38 +0000 Pappus-bristles not surrounded by a villous ring at base. Pappus of slender simple bristles. 17 Agoseris. Autor of the post: Undefined Pappus-bristles surrounded by a villous Post Date: Fri, 22 Aug 2008 18:11:02 +0000 Pappus of narrow soft scales, with or without some slender bristles. 18 Nothocalais. Pappus-bristles surrounded by a villous white ring at base. Autor of the post: Undefined 20 Crepts Post Date: Fri, 22 Aug 2008 17:54:26 +0000 19 Sitilias. Achenes merely narrowed above, not beaked. 20 Crepts. Autor of the post: Undefined 21 Hieracimn Post Date: Fri, 22 Aug 2008 17:42:32 +0000 Achenes narrowed at the base, otherwise columnar, truncate (except in two species rf Hteracium) . Flowers yellow, orange, or red. 21 Hieracimn. Autor of the post: Undefined Erect branching herbs, with alternate Post Date: Fri, 22 Aug 2008 17:31:46 +0000 Flowers white, cream-colored, or purple. 22 Nabalus. Erect branching herbs, with alternate and basal leaves, those of the stem and branches usually very small and bract-like, and large heads of blue, purple, pink, or white flowers, peduncled, or in sessile clusters along the branches. Autor of the post: Undefined Rays truncate and 5-toothed Post Date: Fri, 22 Aug 2008 17:16:24 +0000 Involucre of 2 series of herbaceous bracts, the outer somewhat spreading, the inner erect and subtending, or partly enclosing, the outer achenes. Receptacle flat, naked, or slightly fimbrillate. Rays truncate and 5-toothed at the apex. Autor of the post: Undefined Achenes 5-angled or 5-ribbed, truncate Post Date: Fri, 22 Aug 2008 17:02:56 +0000 Anthers sagittate at the base. Style -branches slender, obtushish. Achenes 5-angled or 5-ribbed, truncate, not beaked. 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