. 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 102nd meridian. on prairies, Ohio to Minne-sota, Nebraska, Kansas and Oklahoma. South-ern plants formerly referred to this speciesprove to be distinct. July-Sept. Vernonia corymbosa Schwein., rangingfrom Manitoba to western Nebraska, hasbroader leaves but is otherwise similar. Genus i. THISTLE FAMILY. 353 7. Vernonia Baldwinii Torr. BaldwinsIron-weed. Fig. 4146. V. Baldwinii Torr. Ann. Lye.
. 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 102nd meridian. on prairies, Ohio to Minne-sota, Nebraska, Kansas and Oklahoma. South-ern plants formerly referred to this speciesprove to be distinct. July-Sept. Vernonia corymbosa Schwein., rangingfrom Manitoba to western Nebraska, hasbroader leaves but is otherwise similar. Genus i. THISTLE FAMILY. 353 7. Vernonia Baldwinii Torr. BaldwinsIron-weed. Fig. 4146. V. Baldwinii Torr. Ann. Lye. N. Y. 2: 211. 1827. Cacalla Baldwinii Kuntze, Rev. Gen. PI. 969. 1891. Vernonia interior Small, Bull. Torr. Club 27: V. interior Baldwinii Mack. & Bush, Fl. Jackson 1903- Stout, 2°-52° high, finely and densely tomentose-pubescent. Leaves lanceolate or oblong-lanceolate, acuminate or acute at the apex, sharplyserrate, 4-8 long, ¥-2 wide, scabrate above,densely tomentulose beneath; heads stout-pedun-cled, 15-30-flowered; involucre hemispheric, 3-4 broad; bracts ovate, the acute tips recurvedor spreading; pappus purple. In dry soil, Iowa to Missouri, Nebraska, Kansasand Texas. July-Sept. fff. 8. Vernonia missurica Raf. Drummonds Iron-weed. Fig. 4147. V. missurica Raf. Herb. Raf. 28. aitissiina var. grandifiora A. Gray, Syn. Fl. I : Part 2, 90. Drtimmondii Shuttlw.; Werner, Journ. Cine. Soe. Nat. Hist. 16: 171. illinoensis Gleason, Bull. N. Y. 4 : 211. 1906. Stout, densely tomentose, 3°-S° lanceolate to narrowly oblong,acuminate, finely serrate, 3-6 long,i-iV wide, scabrous above, densely pu-bescent beneath; inflorescence usuallycompact; heads short-peduncled ; invo-lucre hemispheric or short-cylindric, 2-6 in diameter, 30-60-flowered; bractspurplish, appressed, ovate, obtuse, acute,or mucronate, more or less floccose-pubescent or ciliate; achenes glabrousor a little pubescent; pappus purplish totawny.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
