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Root tuberous-thickened; leaves all basal Post Date: Wed, 20 Aug 2008 22:29:41 +0000 ROUGH FALSE DANDELION. (I F F 3552) Hirsute or pubescent. Root tuberous-thickened; leaves all basal, oblong or spatulate in outline, deeply pinnatifid, 7-17 cm long, 25-35 cm - wide, narrowed into margined petioles ; scape naked or sometimes with a small leaf near its base; head solitary, 3-5 cm broad; outer bracts of the involucre small, short, subulate, the inner ones obscurely corniculate at the tip. Autor of the post: Undefined Involucre cylindric, campanulate or swollen Post Date: Wed, 20 Aug 2008 22:14:47 +0000 On prairies, Kans to Tex April-June. Perennial or annual herbs, with alternate or basal, mostly toothed or pinnatifid leaves, and small or middle-sized heads, usually paniculate or corymbose, of yel- low or orange flowers. Involucre cylindric, campanulate or swollen at the base, its principal bracts in I series, equal, with a number of exterior smaller ones. Autor of the post: Undefined Anthers sagittate at the base Post Date: Wed, 20 Aug 2008 21:59:39 +0000 Recep- tacle mostly flat, naked or short- fimbrillate. Rays truncate and 5-toothed at the apex. Anthers sagittate at the base. Autor of the post: Undefined io-2O-ribbed or nerved, not transversely Post Date: Wed, 20 Aug 2008 21:47:36 +0000 Style-branches slender. Achenes linear- oblong. io-2O-ribbed or nerved, not transversely rugose, narrowed at the base and apex, beakless in our species. Autor of the post: Undefined ] About 180 species Post Date: Wed, 20 Aug 2008 21:33:25 +0000 Pappus copious, of very slender white bristles. [Greek, sandal; application not explained.] About 180 species, of the northern hemisphere. Autor of the post: Undefined I C pulchra Post Date: Wed, 20 Aug 2008 21:13:52 +0000 Besides the following, about 10 others occur in western N Am Involucre glabrous. Involucre cylindric; plant pubescent below; introduced. I C pulchra. Autor of the post: Undefined Involucre pubescent, glandular, or canescent Post Date: Wed, 20 Aug 2008 20:55:28 +0000 Involucre campanulate; plant glaucous; native, western. 2 C glauca. Involucre pubescent, glandular, or canescent. Autor of the post: Undefined 3 C runcinata Post Date: Wed, 20 Aug 2008 20:45:03 +0000 Foliage not canescent nor scurfy, sometimes hirsute. Stem naked, or with i or 2 small leaves; western, native. 3 C runcinata. Autor of the post: Undefined 4 C tectorum Post Date: Wed, 20 Aug 2008 20:27:08 +0000 Stems leafy; introduced annuals or biennials. Stem leaves narrow, revolute-margined, sessile. 4 C tectorum. Autor of the post: Undefined 5 C virens Post Date: Wed, 20 Aug 2008 20:10:21 +0000 Stem leaves lanceolate, clasping, not revolute-margined. Involucre 6-8 mm high; achenes lo-striate. 5 C virens. 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