378 COMPOSITE, 



20. CORETHROGYNE, DeCandoUe. Genus very nearly allied to 

 Lessingia; distingiiisbed chiefly by the numerous and altogether ligulate 

 violet ray-corollas, thus more resembling Aaier, but herbage hoary or 

 woolly, and the flowering season sfning and early summer. Involucres 

 from hemispherical to turbinate. Style-appendages bristly but not 

 cuspidate. 



* Heads solitary or few, large; involucres hemispherical. 



1. C. obovata, Benth. Bot. Sulph. 22 (1844); C. spathulata, Gray, 

 Proc. Am. Acad. vii. 351 (1868). Stems decumbent, 1—2 ft. long; cauline 

 leaves 1 in. long or more, obovate, bullate-rugose, toothed above the 

 middle; peduncles and involucres miuutely glandular, the plant other- 

 wise hoary-tomentose: rays about 20, linear. — Hills along the seaboard, 

 from Marin Co. to Humboldt. May, June. 



2. C. Californica, DC. Prodr. v. 215 (1836). Stems tufted, ascending 

 or erect, 1 — 2 ft. high, at summit bearing several corymbosely disposed 

 long-peduncled large heads: leaves from spatulate-lanceolate to linear, 

 2 in. long or less, acute, entire, or the larger with a few teeth below the 

 apex: peduncles and bracts glandular: rays 25 or more, oblong-linear, 

 dark-violet. — Hills of the Coast Range from Alameda Co. (Arroyo del 

 Valle, Greene) southward, chiefly toward the sea. 



3. C. eaespitosa. C. Californica, Greene, Man. 178, not of DC. 



Suffrutescent, diifuse and depressed, the numerous brittle lignescent 

 branches forming a mat, only the pedunculiform ultimate brancblets 

 suberect, each with a single large head; stems and foliage white with a 

 persistent cottony wool: leaves small, numerous, oblanceolate, acute, 

 serrate: involucres and rays much as in the last. — Obtained by the 

 author, at Crystal Springs, San Mateo Co., 22 June, 1886, and not other- 

 wise known. 



* * Heads numerous, smaller, panicled; the involucres ttirbinate (except 



in n. 4). 



4. C. viscidula. Tall and slender, loosely corymbose-panicled, only 

 the young plant in any degree hoary or flocculent, the stem and branches 

 at flowering time piirplish and glandular-scabrous: leaves narrowly 

 oblanceolate, acute, serrulate, reticulate-venulose, glandular-scabrous on 

 both faces, the peduncles and their small bracts very scabrous and with 

 a few short-stipitate larger glands; the small nearly hemispherical invo- 

 lucres of more numerous bracts and more strongly imbricated than in 

 the foregoing species, these also ■viscid-glandular: rays only 12 — 18: 

 pappus only light-brownish. — Well marked species known to me only in 

 specimens obtained at Monterey by Dr. Parry in 1888. 



