

 Stephanomeria. COMPOSITE. 427 



Apparently not uncommon through the western part of the State, down to San Diego (Cleve- 

 land) ; mixed with the next in collections, and generally confounded with it. 



1 3. M. linearif olia, Gray, 1. c. A span or two high, either slender or the long 

 scape-like peduncle thickening upwards : leaves when young sometimes lightly 

 pubescent or villous-ciliate : pappus bright white ; its scales equalling or shorter 

 than the more or less beaked akene, linear-lanceolate, smooth, bearing a very slender 

 short awn from the deep notch. Calais linearifolia, DC. 1. c., excl. syn. Uro- 

 pappus linearifolius & U. grandiflorus, Nutt. 1. c. 



Plains and low grounds, common, extending eastward to Nevada and New Mexico. Varying 

 much in size and in the number of flowers in the head : this from half an inch (in depauperate 

 plants) to fully an inch long. Akenes 4 or 5 lines long, slender, some of them merely much 

 tapering upwards, some very distinctly beaked. Delicate awn of the pappus from one fourth to 

 less than half the length of the silvery-white scale. 



14. M. macrochaeta, Gray, 1. c. A foot or so high : pappus probably white ; 

 its scales oblong, much shorter than the beaked akene and the very slender awn 

 which rises from a deep notch. Calais macrochceta, Gray, PI. Fendl. 112, & 

 Pacif. K. Eep. iv. 113. 



Near San Francisco, Bigdow. Known only from Bigelow's immature specimens, and from the 

 original ones collected on the northeastern borders of Oregon by Mr. Spalding : also a poor 

 specimen ticketed by Nuttall " Uropappus grandifiorus, San Diego," given by him to Mr. 

 Durand. 



* * Scales of the pappus 20 to 24, slender and awn-like, tapering gradually into a, 

 true aivn : root apparently perennial, or perhaps biennial. 



15. M. troximoides, Gray. Nearly acaulescent : leaves narrowly linear, entire, 

 thickish : scape about a foot high : pappus white, longer than the akene, which is 

 fusiform, smooth, gradually tapering toward the summit, but not beaked. Proc. 

 Am. Acad. ix. 211. 



California, No. 600 of Kellogg and Harford's distribution : probably from Humboldt Co. A 

 remarkable plant, between Microseris and Troximon. Also in Idaho (Spalding) and Montana. 

 Head in fruit an inch long, narrow : corollas not seen. Akenes 4 lines long. Pappus two or 

 more series of awn-shaped scales, a quarter of a line wide at base and to the middle, thence 

 tapering into the merely scabrous rather rigid awn. 



110. STEPHANOMERIA, Nutt. 



Head 3-1 2-flowered. Involucre cylindrical or rarely campanulate, of a series of 

 linear equal scales and some short calyculate ones at base, rarely with some inter- 

 mediate ones so as to be more or less imbricate. Receptacle flat, naked (in one 

 anomalous species alveolate). Akenes oblong or short-linear, mostly columnar and 

 strongly 5-ribbed or angled, glabrous, often rugose, truncate at both ends, the broad 

 base hollowed at the insertion, the apex rarely somewhat narrowed into a neck. 

 Pappus white, a single series of (5 to 25) more or less rigid bristles, which are plu- 

 mose for their whole length or at the upper part, occasionally somewhat chaffy-dilated 

 at base. Paniculately branching and usually slender glabrous herbs (all W. North 

 American) ; with narrow leaves (the upper diminished to scales or bracts), and 

 small heads of pink or flesh-colored flowers, open in the early morning. Nutt. in 

 Trans. Amer. Phil. Soc. 1. c. ; Benth. & Hook. Gen. PI. ii. 533, excl. Rafinesquia. 



1. Heads small : pappus of 5 to 15 rigid bristles with more or less scale-like 

 dilated base, or even scale-like throughout, plumose towards the summit. 

 HEMIPTILIUM, Gray. (Hemiptilium, Gray in Bot. Mex. Bound. 105.) 



1. S. Schottii, Gray. Resembles the next, and with similar 5 -flowered heads : 

 pappus of 5 or 6 linear-lanceolate and blunt rigid scales or scariously margined awns, 



