310 COMPOSITE. Chrysopsis. 



3. C. Breweri, Gray, 1. c. More minutely and sparingly pubescent and also 

 viscid glandular, a foot or two high, with scattered and slender branches, which are 

 mostly terminated by single pedunculate heads : leaves oblong-lanceolate, thin, entire, 

 3 -ribbed from the closely sessile broad base : scales of the involucre of firmer tex- 

 ture, lanceolate, rather few and in only about two ranks, the longer little exceeding 

 the obovate and flat akenes : corollas funnelform : exterior pappus of numerous very 

 fine and short bristles. 



Sierra Nevada, in or near forests, from Mariposa Co. to Sierra, Co. at the altitude of from 4,000 

 to 11,000 feet, Brewer, Torrey, Greene, &c. Heads half an inch long, fewer than in the preced- 

 ing : pappus soft, merely tawny. 



16. APLOPAPPUS, Cass. 



Heads solitary, terminating the branches, or sometimes corymbosely or spicately 

 clustered, many-flowered, rarely several-flowered, heterogamous and with fertile 

 rays, or very rarely homogarnous, the rays being wanting. Involucre imbricated, 

 the scales with or sometimes without herbaceous or foliaceous tips. Receptacle flat 

 or flattish, foveolate or alveolate-dentate. Appendages of the style-branches trian- 

 gular-lanceolate, or in the 1ST. American species more commonly elongated-subulate. 

 Akenes varying from turbinate to linear, terete, angled, or more or less compressed. 

 Pappus simple, of copious and unequal rigid capillary (scabrous or almost barbellate) 

 bristles. Herbs or low under-shrubby plants, of various aspect and foliage ; with 

 yellow flowers, and pappus varying from tawny to reddish, very rarely bright white. 

 Leaves alternate, rigid. Gray, Proc. Am. Acacl. viii. 634. Aplopappus, Pyrrocoma 

 (Hook.), Stenotus (Nutt.), Macronema (Nutt.), Prionopsis (Nutt.), Isopappus, (Torr. 

 & Gray), & Ericameria (Nutt.), Torr. & Gray, Fl. Haplopappus, Ericameria (and 

 Macronema under Chrysopsis), Benth. & Hook. Gen. ii. 253. 



A pretty large American genus, which, like its analogue, Aster, has to take in a great diversity 

 of forms, mainly andine and of the Rocky-Mountain region and adjacent dry plains, but so 

 scantily represented in California that the species are more conveniently exhibited under an arti- 

 ficial key than in their natural subgenera or sections : 



Rays none : involucre elongated obconical, its coriaceous scales many- 

 ranked, all with short and abrupt squarrose herbaceous tips. 1. A. SQUARROSUS. 

 Rays none : involucre of a few thin and loose and 3 or 4 outer nearly 



foliaceous scales : style appendages long and exserted. 13. A. MACRONEMA. 



Rays 10 to 20 or more. 



Akenes silky-villous : pappus white : head solitary, peduncled. 



Shrub 2 to 4 feet high : leaves narrow linear. 2. A. LINEARIFOLIUS. 



Tufted plant 3 or 4 inches high : leaves spatulate. 3. A. ACAULIS. 



Akenes silky-pubescent : pappus whitish : heads several. 5. A. PANICULATUS, var. 



Akenes glabrous or nearly so at maturity. 

 Herbs : pappus tawny or reddish. 



Leaves laciniate : heads 1 to 3, peduncled. 4. A. APARGIOIDES. 



Leaves serrate or entire : heads spicate or clustered. 5. A. PANICULATUS. 



Shrub : pappus white : leaves filiform. 8. A. PINIFOLIUS. 



Rays 1 to 9. 



Herbaceous, with leaves serrate and oblong. 6. A. WHITNEYI. 



Shrubby or suffruticose, with leaves entire, and 



Cuneiform-dilated. 7. A. CUNEATUS. 



Filiform or shorter and very crowded : akenes glabrous. 9. A. ERICOIDES. 



Filiform-linear with tapering base : involucral scales naked : 



akenes pubescent. 10. A. RESINOSUS. 



Narrowly or spatulate-linear : involucre narrow, with outer scales 



leafy-tipped, and the inner ones ciliate. 11- A. BLOOMERI. 



Spatulate-lanceolate or linear : involucre broad, with outer scales 



loose and leafy, and the inner ones naked. 12. A. SUFFRUTICOSUS. 



