. 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. 3. Tetraneuris acaulis (Pursh) Tetraneuris. Fig. 4539. Gaillardia acaulis Pursh, Fl. Am. Sept. 743. acaulis Greene, Pittonia 3: 265. acaulis Nutt. Gen. 2: 173. acaulis Britton, Mem. Torr. Club 5: 339. simplex A. Nelson, Bot. Gaz. 28: 127. 1899. Perennial with thick roots and a stout branchedcaudex; scapes tufted,
. 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. 3. Tetraneuris acaulis (Pursh) Tetraneuris. Fig. 4539. Gaillardia acaulis Pursh, Fl. Am. Sept. 743. acaulis Greene, Pittonia 3: 265. acaulis Nutt. Gen. 2: 173. acaulis Britton, Mem. Torr. Club 5: 339. simplex A. Nelson, Bot. Gaz. 28: 127. 1899. Perennial with thick roots and a stout branchedcaudex; scapes tufted, rather stout, or slender,densely silky or tomentose, 2-8 high. Leaves allborne on the ends of the branches of the caudex,linear-spatulate, entire, obtuse or obtusish, i-3long. ii~3 wide, densely silky or villous; heads9-i8 broad; involucre hemispheric, its bractsdensely villous, acutish; rays 10-15; pappus of 5or 6, ovate or oblong, awned scales. In dry or rocky soil. North Dakota to Assiniboia,Montana, Nebraska and New Mexico. May-Aug. Tetraneuris scaposa (DC.) Greene, admitted intoour first edition as from Nebraska, is not definitelyknown north of Texas. 4. Tetraneuris herbacea Greene. Eastern Tetra-neuris. Fig.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
