328 COMPUSrr.E. .SolUlayu. 



Var. serrulata, Gray, 1. c. : tho leaves iniimlcly ciliato or ub if aeiiiiluto witli 

 short ami sharp ri;^'iil bristles. — L. Si'irdlnta, Toir. 



Var. tortifolia, Gray, 1. c. : nearly the same, hut with the rather broail leaves 

 remarkably twi.-.teil. 



Var. puberula, (!ray, 1. c, : chielly a ihvurf form, either minutely or more con- 

 spicuously ami ruughly puberulent. 



Eastern part of tlie Siena Nevada ; llience eastward to tlie Koeky Mountains, and northward 

 to Washington Territory ; al)undant llirough the dry interior districts. Var. tortifuHa, near 

 Aurora {Brewer), on Mount l)avidson, Nevada (B/ouincr), and Sierra Valley {Lemmon). 



18. SOLIDAGO, i.inn. (Joujknkou. 



Heads suuill, nujstly in panicles or panieled racemose clusters, rarely in corymbs, 



lieterogamous ; the rays fertile. Involuero narrow, imbricated and the outer scales 



successively shorter, ai)i)ressed, usually destitute of herbaceous tips, lieceptaclo 



small, alveolate or limbrillate. ytyle-ai)pendages lanceolate or triangular subulate. 



Akenes terete or angular, 5 - 12-ribbed. Pappus simple, of a single series of mostly 



equal and slender scabrous capillary bristles. — Perennial herbs, with virgate stems, 



alternate leaves, and yellow flowers, the papi)us mostly didl white. 



A large genus witli headiiuarters in tlie Atlantic United States, only u few on tlie Tacilic sido 

 of the continent ; llowering in autunui. 



§ 1. Stem hranchiny fredy ; the branches erect, leafy, and terminated by dense some- 

 times paniculate corymbs of clustered small heads : leaves linear : scales of the 

 involucre narroiv : rays inconspicuous but numerous: akenes pubescent. — 



EUTUAMIA, Nutt. 



1. S. OCCidentalis, Nutt. Glabrous throughout, 3 or 4 feet high, jianiculately 

 branched, slender : leaves linear, entire, obscurely 3-nerved, 2 to 4 inches long, 

 1 to 3 lines wide: heails in numerous snudl clusters {\ incli long): scales of the 

 invohmre xnWwv acute ; rays Ki to 20, not exceeding the 8 to 14 disk-llowers. 



Couinioi) in wet places, especially near the coast, extending to British America. 



§ 2. Stem mostly simple : heads not in corymbs : rays usually more conspicuous and 

 fewer than the disk-Jtowers : akenes (/lab7'ous or nearly so. — Viugaurea, DC. 



* Heads rather feio and large (a third of an inch long), in a narrow or raceme-like 

 panicle, or in simple clusters : disk-Jloivers 20 to 30. 



2. S. spiciformis, Torr. & Gray. Glabrous or nearly so, glutinous : stem 

 rather stout, a foot or two high : leaves thickish, si)atulate, serrate, tapering (espe- 

 cially the lowest ones) into a hmg and narrow entire base or winged petiole ; the 

 ujjper ones small and gradually ])assing into bracts of the narrow and sjiikii-like 

 panicle, becoming shorter than the Inuids and entire : involucre campanulate ; its 

 scales oblong and obtuse, the outer with somewhat greenish tips : rays about 7, very 

 small and inconspicuous : akenes silky-pubescent. — Fl. ii. 202. *S'. petiolaris, 

 Less. (1), Hook. & Arn. in part. 



Ahont Monterey. Leaves m glutinous tlnit they adliero linnly to the paper in drying. Sjiike- 

 like interrupted panicle htrictly erect, 5 to I) inches long. 



3. S. Virga-aurea, Linn., var. multiradiata, 'lorr. & Gray. Glabrous or 

 somewhat i)ubescent, a span to a foot liigh : leaves few, lanceolate, acute, slightly 

 serrate or entire, the lower with long narrowed base : heads few in a rather loose 

 cluster or panicle,: scales of the involucre rather loose, lanceolate, acute, thin : rays 

 about 12, narrow, conspicuous : akenes minutely pubescent. — .S'. corymbosa, Nutt. 



Higher parts of the Sierra Nevada ; niiparently rare in California, more common in the Rocky 

 Mountains, as are some other forms of this polymorphous or perhaps compound species. 



