. 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 102d meridian. Botany; Botany. 3. Tetraneuris acaulis (Pursh) Greene. Stemless Tetraneuris. Fig. 4539. Gaillardia acaulis Pursh, Fl. Am. Sept. 743. 1814. T. acaulis Greene, Pittonia 3: 265. 1898. Actinella acaulis Nutt. Gen. 2: 173. 1818. Picradenia acaulis Britton, Mem. Torr. Club 5: 339. 1894. T. simplex A. Nelson, Bot. Gaz. 28: 127. 1899. Perennial with thick roots and a stout branched ca
. 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 102d meridian. Botany; Botany. 3. Tetraneuris acaulis (Pursh) Greene. Stemless Tetraneuris. Fig. 4539. Gaillardia acaulis Pursh, Fl. Am. Sept. 743. 1814. T. acaulis Greene, Pittonia 3: 265. 1898. Actinella acaulis Nutt. Gen. 2: 173. 1818. Picradenia acaulis Britton, Mem. Torr. Club 5: 339. 1894. T. simplex A. Nelson, Bot. Gaz. 28: 127. 1899. Perennial with thick roots and a stout branched caudex; scapes tufted, rather stout, or slender, densely silky or tomentose, 2'-8' high. Leaves all borne on the ends of the branches of the caudex, linear-spatulate, entire, obtuse or obtusish, i'-3' long, 1V-3" wide, densely silky or villous; heads 9"-l8" broad; involucre hemispheric, its bracts densely villous, acutish; rays 10-15; pappus of 5 or 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 into our first edition as from Nebraska, is not definitely known north of Texas. 4. Tetraneuris herbacea Greene. Eastern Tetra- neuris. Fig. 4540. T. herbacea Greene, Pittonia 3: 268. 1898. Actinia herbacea Robinson, Rhodora 10: 68. 1908. Perennial by-a stout thick caudex; scape stout, villous- pubescent, especially above, 6'-8' high. Leaves linear- spatulate, slightly fleshy, bluntish, strongly punctate, spar- ingly loosely long-hairy, at least toward the base, 2'-3' long, about 3" wide; heads nearly 2' broad; involucral bracts oblong, obtuse and rounded at the apex, densely villous; rays about 15; pappus scales ovate-oblong, obtuse, acute or apiculate. Southern Ontario, Ohio and Illinois. May-June. 83. HYMENOXYS Cass. Diet. Sci. Nat. 55 : 278. 1828. [Picradenia Hook. Fl. Bor. Am. 1: 317. 1833.] Pubescent herbs with branching stems and alternate e
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