52 CALIFORNIA ACADEMY OF SCIENCES. 



S. BoLANDEKi. — A foot or more high; leaves linear-lanceo- 

 late, entire or with a few linear lobes; bracts of involucre 

 regularly imbricated in two or three series, all gradually at- 

 tenuate from a broad base; pappus brownish, 5 lines long, 

 the ovate palea not more than a half line. Microseris, Gray, 

 Syn. Fl. ii. 418. 



Mendocino and Humboldt counties, and northward. 



S. HowELLii. — Size of the last; leaves with refracted 

 lobes or teeth; heads narrower. 15-20-flowered; akene 3 

 lines long; pappus white, a half inch, the palea lanceolate 

 and nearly as long as the awn. Microseris, Gray, Proc. Am. 

 Acad., XX, 300; Syn. Fl. Sup pi., 454. 



Southern Oregon, collected only by Mr. Howell. 



S. PALUDOSA. — Stems numerous, slender, 2 — 3 feet high; 

 leaves a foot long and from subentire to laciniate-parted, 

 the segments long and narrow; head an inch high, 50 — 75- 

 flowered; bracts 20 — 25, all tapering from a lanceolate base 

 into a long and slender acumination, the outer successively 

 shorter; akene 2 lines long; pappus brownish, the firm lan- 

 ceolate palea of a line or more passing gradually into a bar- 

 bellate awn of 4 or 5 lines. llicroseris sylvatica, var. Still- 

 mani, Gray, Bot. Cal., I.e. and Syn. Fl. 1. c. 



Marshy grounds in the vicinity of Mt. Tamalpais, and in 

 other localities not far from San Francisco Bay. Here de- 

 scribed from excellent specimens obtained by Mrs. Curran 

 at Corde Madera, Marin Co. Most distinct from the fol- 

 lowing. 



S. SYLVATICA, Benth. — A foot or two high, mostly simple 

 and monocephalous : head an inch high, 30 — 40-flowered: 

 bracts broader than in the preceding and more abruptly 

 acuminate: akene 3.^ lines long, columnar, the base a little 

 attenuate: pappus sordid, the lanceolate paleae 5 lines, 

 tapering to a subplumose awn of 3 lines or less. — PI. Hartw. 

 320. Calais, Gray, Pac. B. Eejj. iv. 112. Microseris, Gray, 

 1. c. excl. var. Stillmani. 



