312 CICHORIACEAE. Vor. III. 
11, 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. 
ig 
AN aN 
\) 1 BN ] 1. Ptiloria pauciflora (Torr.) Raf. 
Brown-plumed Ptiloria. Fig. 4056. 
Prenanthes? pauciflora Torr. Ann. Lye. N. Y. 
2: 210. 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, 1°-2° high. 
Basal and lower leaves runcinate-pinnatifid, 
1’-23’ long, 3-6” wide, the upper all short 
and narrowly linear or reduced to scales; 
heads somewhat racemose-paniculate along 
the branches, usually about 5-flowered; 
involucre 4”-5” high; rays 1-2” long; 
_ pappus brownish, plumose to below the 
middle. 
Plains, Nebraska, Kansas to Wyoming, 
Texas and California. Summer. 
2. Ptiloria ramoésa Rydb. White- 
plumed Ptiloria. Fig. 4057. 
Ptiloria ramosa Rydb. Mem. N. Y. Bot. Gard. 
1: 453. 1900. 
Similar to the preceding species, but com- 
monly lower, bushy-branched, the branches 
ascending. Basal leaves runcinate-pinnati- 
fid, those of the stem linear or filiform, 
entire, or sometimes runcinate-dentate,, the 
uppermost reduced to small scales; heads 
numerous, usually solitary at the ends of 
the branchlets; involucre about 4” high; 
pappus bright white, very plumose to near 
the base. 
Plains and dry, rocky soil, western Ne- 
braska to Wyoming, Montana and Colorado. 
In first edition of this work not distinguished 
from the western Ptiloria tenuifolia (Torr.) 
Raf. May-Aug. ’ 
