Sericocarpus. COMPOSITE. 319 



* * Heads smaller and numerous, crowded in a pyramidal or elongated panicle. 



4. S. California a, Xutt. Hoary or grayish with a fine and close pubescence : 

 stem strict, 1 to 3 feet high : leaves oblong, lanceolate-oblong and entire, or the 

 lower spatulate or obovate and with a few scattered sharp teeth : heads in short 

 erect or barely spreading racemes, which are collected in a narrow close virgate or 

 pyramidal panicle : scales of the involucre lanceolate-oblong, acutish or obtuse, at 

 least the outer ones puberulent : rays 7 to 12 and about as many as the disk-flowers, 

 small : akenes minutely pubescent. Varies with longer, more spreading, and then 

 commonly one-sided racemes. S. petiolaris, Hook. & Arn. in part. S. puberula, 

 Cham. & Schlecht. 



Var. Nevadensis. Hoary with minuter pubescence, smaller, with looser and 

 fewer decidedly one-sided racemes, the involucre mostly glabrous : approaching 

 S. nemoralis, but wants the canesceut-silky akenes, &c. 



Dry ground, Santa Barbara to Sonoma Co. A California!! representative of S. nemoralis ; but 

 mostly more tall and strict. Like that, it has its greener and rougher (S. radula) state. The 

 heads of the latter sometimes 4 lines long and full ; ordinarily 3 lines long. Rays occasionally 

 abortive. Receptacle sometimes with alveoli extended into one or two awn-shaped scales, or else 

 bearing chaff resembling the inner scales of the involucre. Leaves one, two, or the lowest three 

 inches long. The ambiguous var. Nevadensis, collected by Anderson near Carson City, and by 

 Dr. Horn in Owens Valley, &c. 



5. S. elongata, Xutt. Slightly and minutely pubescent, or nearly glabrous : 

 stem strict, very leafy to the top, 1 to 4 feet high : leaves green, rather thin, lanceo- 

 late or sometimes oblong, acute or acuminate, mostly serrate with some narrow and 

 sharp teeth (occasionally all the upper ones entire), triple-ribbed from below the 

 middle, veiny : heads very many, in compact erect or at length recurving racemes, 

 which are crowded in a narrow or pyramidal panicle : scales of the involucre linear, 

 small : rays 12 to 20, slender, usually more numerous than the disk-flowers : akenes 

 slightly pubescent. S. stricta, Less. (1) 



Moist or shady ground, from above Monterey, and along the Sierra Nevada, to Oregon and 

 British Columbia. Heads 2 to 3 lines long. Var. microcepliala, Kellogg ; a form with depau- 

 perate inflorescence. 



6. S. Guiradonis, Gray. Completely glabrous : stem strict, slender, 2 or 3 feet 

 high : leaves bright green, thickish, entire ; the upper linear and one-ribbed ; the 

 lower lanceolate or oblanceolate and tapering gradually into the long narrow base or 

 margined petiole, somewhat triple-ribbed : heads in a virgate panicle : scales of the 

 involucre lanceolate-subulate: rays 8 or 9, small: disk-flowers 10 or 12: akenes 

 almost glabrous. Proc. Am. Acad. vi. 543. 



Base of San Carlos, Fresno Co. (Guirado) ; Tejon, &c., Rothrock. The var. spcctabilis, Eaton, 

 in Bot. King., if of this species, as is likely, has broader and obtuser scales to the involucre, 

 broader lower leaves, &c., and answers to narrow-leaved forms of S. speciosa. It inhabits 

 Nevada, and probably occurs within the limits of California. 



7. S. sempervirens, Linn. Completely glabrous : stem strict, and 2 or 3 feet 

 high : leaves rather fleshy, lanceolate, entire, the lower tapering into a Ions narrow 

 base, the uppermost reduced to subulate bracts of the virgate and rather dense 

 panicle : scales of the involucre lanceolate, obtuse : rays 8 to 10 : akenes minutely 

 pubescent. 



Salt marshes near San Francisco, Bolander. Near the southern boundary, 60 miles east of 

 San Diego, Palmer. Appears to be the same as the Salt-Marsh Goldenrod of the whole Atlantic 

 shore down to Mexico. It is a form with small heads (3 lines long), approaching S. angustifolia 

 of Elliott. 



19. SEBICOCABPUS, Nees. 



Head 1 2 - 1 5-flowered, heterogamous ; the rays about 5, distant, fertile, white, 

 sometimes inconspicuous. Involucre oblong or narrowly cam panu late; its scales 

 appressed, linear-oblong, firin-coriaceous or cartilaginous and white, with abrupt 



