. 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. 312 CICHORIACEAE. Vol. III. ii. PTILORIA Raf. Atl. Journ. 145. 1832. [Stephanomeria Nutt. Trans. Amer. Phil. Soc. (II.) 7: 427. 1841.] Annual or perennial, mostly glabrous, often glaucous herbs, with erect, simple or branched, usually rigid stems, alternate or basal, entire dentate or runcinate-pinnatifid leaves, those of the stem and branches often reduced to
. 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. 312 CICHORIACEAE. Vol. III. ii. PTILORIA Raf. Atl. Journ. 145. 1832. [Stephanomeria Nutt. Trans. Amer. Phil. Soc. (II.) 7: 427. 1841.] Annual or perennial, mostly glabrous, often glaucous herbs, with erect, simple or branched, usually rigid stems, alternate or basal, entire dentate or runcinate-pinnatifid leaves, those of the stem and branches often reduced to subulate scales, and small erect heads of pink flowers, paniculate, or solitary at the ends of the branches, opening in the morning. Involucre cylin- dric or oblong, its principal bracts few, equal, scarious-margined, slightly united at the base, with numerous short exterior ones and sometimes a few of intermediate length. Receptacle flat, naked. Anthers sagittate at the base. Style-branches slender. Achenes oblong or linear, terete or columnar, 5-ribbed, truncate or beaked at the summit, the ribs smooth or rugose. Pappus of 1 series of rather rigid plumose bristles. [Greek, referring to the feathery pappus.] About 20 species, natives of western and central North America. Type species: Ptiloria pauciflora (Torr.) Raf. Involucre about 5" high; pappus brownish, plumose to below the middle. 1. P. pauciflora. Involucre about 4" high; pappus white, plumose almost to the base. 2. P. ramosa. i. Ptiloria pauciflora (Torr.) Raf. Browrirplumed Ptiloria. Fig. 4056. Prenanthes? pauciflora Torr. Ann. Lye. N. Y. 2: 2io. 1827. Ptiloria pauciflora Raf. Atl. Journ. 145. 1832. Stephanomeria runcinata Nutt. Trans. Am. Phil. Soc. (II.) 7: 427. 1841. Perennial; stem rather stout, striate, rigid, divergently branched, l°-2° high. Basal and lower leaves runcinate-pinnatifid, i'-2i' long, 3"-6" wide, the upper all short and narrowly linear or reduced to scales; heads somewhat rac
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