Mkroseris. COMPOSITE. 417 



nella nutans (Geyer), Hook. Lond. Jour. Bot. vi. 253. Ptilophora nutans, Gray, PI. Fendl. 113. 

 Calais (Ptilophora) nutans, Gray, Pacif. ft. Rep. iv. 112. Stephanomeria intermedia, Kellogg, 

 Proc. Calif. Acad. v. 39. — Wet grassy grounds, borders of Brit. Columbia and Montana"^ 

 S. W. Colorado, Utah, and the higher Sierra Nevada, California : fl. spring. 

 M. major, Ghat, 1. c. Stouter, often more than 2 feet high, apparently thicker-rooted : 

 heads larger, sometimes inch high : involucre of more lanceolate bracts imbricated in three 

 lengths: pappus rather less plumose: leaves oblong-lanceolate, entire 6r sparingly laciniate. 



— Ptilophora major, Gray, PI. Fendl. 113. Calais major, Gray, Pacif. R. Rep. 1. c. 114. 



Idaho, Utah, &c. ; first coll. by Spalding. 



Var. laciniata, Gray, 1. c. Lower : leaves pinnately parted and laciniate. — Calais 

 graciloba, Kellogg, Proc. Calif. Acad. 1. c. — TV. Idaho, Spalding. Mendocino Co., California, 

 Kellogg. 



§ 2. Scorzonella, Gray, 1. c. Pappus (somewhat sordid) of 5 to 10 atten- 

 uate bristles with paleaceous base, or of short palea? bearing long bristles, these 

 either subplumose or naked : akenes truncate at summit, slightly attenuate down- 

 ward only : involucre loosely imbricated in 2 or 3 series, many-flowered : peren- 

 nials or biennials, often branching from base and somewhat leafy-stemmed : root 

 fusiform. — Scorzonella, Nutt., Benth. & Hook. 1. c. 



# Pappus-bristles barbellate or short-plumose, not more than 4 times the length of the entire lan- 

 ceolate palea : akenes slender. 



M. sylvatica, Gray, 1. u. A foot or so high, not rarely simple and monocephalous : leaves 

 from broadly lanceolate to linear, laciniate-pinnatifid : head almost inch high : involucral 

 bracts mostly abruptly acuminate from an oval or oblong base: awn-like bristles of the 

 pappus (commonly 10) almost or quite plumose. — Scorzonella sylvatica, Benth. PI. Hartw. 

 320. Calais (Anacalais) sylvatica, Gray, Pacif. R. Rep. iv. 113. — California, in woods of 

 the Sacramento and its tributaries, Hartweg, Bigelow, Kellogg & Harford. 



Var. Stillmani, Gray, 1. c. Sometimes several-stemmed from the base and with 

 leaves pinnately parted into long linear lobes : involucral bracts lanceolate and more gradu- 

 ally slender-acuminate: pappus-bristles (5 to 10) merely barbellate under a lens: akenes 

 smooth, obscurely costate. — California, on the Sacramento, &c, Stillman, Bigelow. Near 

 San Francisco, Samuels, G. R. Vasey. 



* # Pappus-bristles (10, sometimes 8) naked, barely denticulate or scabrous, entire or nearly so, 

 several or many times longer than the small palea: akenes columnar or rather slender: heads 

 large or middle-sized, with elongated ligules : involucre not reflexed at the fall of the akenes, its 

 bracts with loose and conspicuously acuminate or attenuate tips: stem sometimes scapiform, 

 often few-leaved and branching. — Scorzonella, Nutt. (Foliage variable, as in the genus gener- 

 ally: species too nearly connected.) 



+- Heads and leaves of the largest. 

 M. procera, Gray. Glaucous : stem robust, 2 or 3 feet high, branching : leaves chiefly 

 oblong and apiculate-acuminate, denticulate or entire, rarely laciniate-lobed ; larger cauline 

 6 to 8 inches long and one or two wide ; radical oblong-lanceolate, commonly a foot long : 

 involucre a full inch or more high and broad ; outer bracts broadly ovate with abrupt acu- 

 mination; innermost lanceolate-acuminate: akenes nearly 3 lines long: palese of the pappus 

 lanceolate or oblong-lanceolate, acute, about one fourth the length of the awn. — Proc. Am. 

 Acad. xix. 64. M. laciniata, var. procera, Gray, Proc. 1. c. ix. 209, & Bot. Calif, i. 424. 

 Calais glauca, var. procera, Gray, Proc. Am. Acad. vii. 364. — Hillsides, TV. California, from 

 Sonoma Co. northward to Klamath, Oregon, Torrey, Bolander, Kellogg, Kronkhite. 



H— -t— Heads and leaves less ample and stem less robust, a foot or less to two feet high. 



M. laciniata, Gray. Rather stout, glaucescent : leaves laciniate-pinnatifid into attenuate 

 lobes, or sometimes entire; radical 4 to 10 inches long: involucre an inch or less high; its 

 bracts as in the preceding, or nearly all with broad dilated base : akenes columnar, 2 lines 

 long : paleas of the pappus deltoid or triangular-ovate, not longer than breadth of the akene, 

 abruptly tipped by an awn or bristle 8 or 9 times longer. — Proc. Am. Acad. ix. 209, excl. 

 var. procera. Hgmenonema? laciniatum, & perhaps also li.1 glaucum, Hook. Fl. i. 301. 

 Scorzonella laciniata, Nutt. Trans. Am. Phil. Soc. vii. 426. Calais (Scorzonella) laciniata, 



27 



