Slephanomerid. COMPOSIT/K. 427 



ApparcTitly not uncomnion tlirongli the western jmrt of tlm Stsito, down to Sun l)inp;o (Cleve- 

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



13. M. linearifolia, Gray, 1. c. A H[vAn or two liigli, oitlun' slciidcr or the long 

 scape-like i)e(luiicle thickening vipwanls : leaves wluai young Ronictinics lightly 

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

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

 sliort awn from the deep notch. — Calais linearifolia, DC. 1. c, cxcl. syn. Uro- 

 pappns linearifolim Sc U. (jramlifiorus, Nutt. 1. c. 



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

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

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

 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, macrochceta, (Iray, 1. c. A foot or so high : pappus probably white ; 

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

 which rises from a deep notch. — Calais macrocha;ta, <.!my, PI. Fendl. 112, it 

 IVif. K. Rop. iv. 113. 



Near San Francisco, Bi'jclow. Known only from Higelow's inunnturo appcimons, and from tlio 

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

 specimen ticketed by Nuttall " Uropappus grand,iJIorus, 8an Diego," given by him to Mr. 

 Durand. 



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

 true aivn : root apparently perennial, or perhaps biennial. 



15. M. troximoides, Gray. Nearly acauloscont : leavon narrowly linear, entire, 

 tliickish: scapo about a foot high: j)appus white, longor than thn akoiie, which \^ 

 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 Microscri.t and Troximon. Also in Maho {Spaldivg) 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 aiul to the middle, thence 

 tapering into the merely scabrous rather rigid aAvn. 



110. STEPHANOMERIA, Nutt. 

 Head 3-12-flowered. Tnvolucro cylindrical or rarely campanulato, of a scries of 

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

 mediate ones so as to be morq or less imbricate. Receptacle Hat, 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 wliolo length or at the upper part, occasionally 8on\ewhat chaffy-dilated 

 at base. — Pnnicnlately 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. ; "Renth. «k Hook. Gen. PI. ii. 533, pxcl. Ixafiiifnipiin. 



§ 1. Heads small: pappim of 5 to 15 riqid- hrintles irith more or lr.1,0 srah-like 

 dilated base, or even scale like throurfhovt, plumose towards the xummit. — 

 Hemiptiuum, Gray. [IlemiptHiiim, Gray in Rot. Mex. P>ound. 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 srarionsly margined awns, 



