Mkroseris. COMPOSIT.E. 425 



awn, occasionally almost obsolete. — Ilymenonema ? glauctim, Hook., seems to be a 

 small form of this. Calais glauca, var, procera, Gray, Proc. Am. Acad. vii. 364-. 



Along streams, common in Oregon towards the coast : Ukiah {Kellogg) ; with laciiiiate-pinnati- 

 fid leaves, but with narrower pappus-scales. The var. procera, on hills, ISonoma Co. to Mendocino 

 Co., &c. {Bolander, Torrcij, Kellogg) and to Klamath Co., Oregon, Cronkhile. Peduncles often 

 a foot long. Head three quarters of an inch to an inch long, especially in the variety, which has 

 it broad in proportion, and the outer scales of the involucre from 3 to 5 lines wide. Corollas 

 bright sulphur-yellow. Akenes 2 to nearly 2^ lines long when mature. 



5. M. leptosepala, Gray, 1. c. Mostly more slender than the preceding : 



leaves similarly either entire or laciniate-pinnatihd : head smaller : scales of the 

 involucre all lanceolate (or the outermost ovate-lanceolate) and gradually acuminate : 

 pappus-scales about one tifth of the length of the more slender akene. — Scoi-zonella . 

 leptosepala, Nutt., 1. c. Calais Bolanderi, Gray, Proc. Am. Acad. vii. 365. C. 

 laciniata, Gray, 1. c. viii. 392, coll Hall, No. 313. 



Swamps, Mendocino and Humboldt Counties {Bolander, Kellogg) : also in Oregon. Involucre 

 half an inch or more high, narrower than in the last, as well as the scales narrow and miJle taper- 

 ing ; but the outermost are sometimes rather broad. 



-i- -f- Scales of the involucre all rather obtuse : pappus of 5 tivo-cleft scales, tvith a 

 p)ro2)ortio7ially shorter awn in the sinus : acaulescent : ligules short. 



6. M. Parryi, Gray, 1. c. Scapes a span or two high, simple : leaves linear- 

 lanceolate, laciniate-pinnatihd or entire : scales of the involucre ovate or oblong, in 

 about 3 series : awns of the pappus rather strongly denticulate, extending to _ only 

 twice or thrice the length of the 2-cleft scale. — Calais Parryi, Gray in Pacif. IL 

 Eep. iv. 122, & Bot. Mex. Bound. 104. 



Near San Diego, Parry. Head barely half an inch high. Akenes not formed in the specimen. 

 The species was referred to the Calocalais section on account of the pappus ; but the involucie 

 refers it to Scorzanclla. 



§ 3. Pappus of 5 {or rarely fewer) scales or atv7is, not p>lumose nor harbellate, sordid : 

 akenes tapering more or less from below the truncate apex to the base: involucre 

 of mostly equal principal scales and a few short calyculate ones at base: an- 

 nuals, acaulescent, ivith simp)le scapes and small or inediocre heads. Proper 

 scales of the involucre lanceolate, and leaves either laciniate-pinnatijid or entire, 

 in cdl the sjjecies. — Eucalais. {Calais § Eucalais, DC.) 



* Awns of the papjpus slender, naked and fragile, and with the scale at base nearly 

 obsolete, sometimes deciduous or ivanting. 



7. M. aphantocarpha, Gray, 1. c. A foot or two high, rather slender : head 

 half an inch high, nu^ny-liowered : ligules short : capillary awns of the pappus 

 barely scabrous, nearly twice the length of the ix\iQnc. — Calais aphantocarpha, (4ray, 

 Proc. Am. Acad. vi. 552. 



Var. tenella, Gray, 1. c. Slender, a span high, with smaller and fewer-flowered ■ 

 heads : akenes inclining to clavate, the summit being mostly a little contracted : 

 awns of the pappus 2 to 5, with a distinct chaffy-dilated base, deciduous or very 

 fragile, sometimes apparently wanting. — Calais {Aphanocalais) tenella, Gray in 

 Pacif. R. Rep. iv. 114, t. 17. 



Hills of the Contra Costa Range near Monte Diablo (Breiver), and in the same part of the State, 

 Samuels. The var. tmella, Napa Valley, in grassy places (Bigelow), and on the Sacramento, 

 FUch. Akenes scabrous on the strong ribi, tiq.iin- t<nNT,rds the base, and the summit also slightly 

 contracted, but with no neck : the 'outnninst ,,u1h „■. nt, fully 2 lines long m the larger lorm. 

 The variety is most probably only a drpaiiiuaatr toini ,it the larger. 



* >.': Scales of the pappiis conspicuous, 

 +- From oblongdanceolate to oblong-ovate and acute, more or less tapering into the awn. 



8. M. Bigelovii, Gray, 1. c. Scapes a span to a foot or more high : leaves 

 generally pinnately parted into numerous divisions : calyculate scales of the mvo- 



