148 COMPOSITE. Solidago. 



Var. SCOpulorum, GRAY, 1. c. More glabrous, 3 to 18 inches high, commonly strict: 

 heads when numerous in a more open or compound cluster, mostly smaller : bracts of the 

 involucre closer, shorter, and merely acute. S. corymlosa, Nutt. 1. c. (S. heterophylla in 

 j ier k ). Along the higher Rocky Mountains to New Mexico, Utah, &c., the Cascade Moun- 

 tains, and rare (in a dwarf state) along the Sierra Nevada. 



Var Neo-Mexicana. Two feet high, with numerous heads more loosely disposed 

 in approximate axillary as well as terminal clusters, composing a narrow elongated thyrsus, 

 somewhat like that of 5. m<i<-ro/>/tt/lla. High summits of the Mogollon Mountains, 

 N. Mexico, Ritsby. A doubtful plant. 



S Virgaurea, L. Of this Old World and polymorphous or confused species, the var. alpes- 

 tris (of which .S'. macrophylla is the American representative) reaches the Asiatic side of Beh- 

 ring Strait, and seems to pass into 5. multirudiata. The var. Cambrica is represented by 



Var. alpina, BIGEL. Dwarf, 2 to 8 inches high, obscurely pubescent or glabrous : 

 leaves few, thickish, spatulate or obovate, mostly obtuse; canline sessile, the uppermost 

 lanceolate, lowest and radical narrowed into a margined petiole: heads (4 lines long) 3 to 7 

 in a terminal cluster, or also subsolitary in uppermost axils: involucre broad; its bracts 

 rather broadly lanceolate, barely acute: akeues pubescent. --F1. Bost. ed. 2, 307; Torr. & 

 (Jrav, 1. c. Alpine summits of the mountains of N. New York, New England, and Lower 

 Canada, on Anticosti, and Hudson's Bay? Seems nearly to pass into 6'. humilis, and like 

 that to be somewhat viscid. 



H- -M- Bracts of the involucre obtuse. 



S. humilis, PCESH. Glabrous, disposed to be glutinous, bright green : stems strict, a span 

 to a foot high, leafy: leaves of firm texture and fine venation, smooth; cauliue all sessile; 

 upper lanceolate to nearly linear, entire ; lower and radical becoming spatulate witli long 

 attenuate base, sparingly appressed-serrate above the middle : heads (3| or 4 lines long), 

 rather crowded in a narrow racemiform paniculate simple or sparingly branched thyrsus 

 (which is leafy below and naked above) : bracts of the involucre oblong-linear: akenes pu- 

 bescent. Fl.' ii. 543 (the Newfoundland plant, in herb. Banks, where Solander indicated 

 the species) ; Hook. Fl. ii. 5 ; Torr. & Gray, Fl. ii. 206, not of Desf. & DC. 5. stricta, Hook. 

 1. c., partly. S. Virgaurea, var. humilis, Gray, Man. 241. Rocky ground, Newfoundland to 

 Saskatchewan and Rocky Mountains, Northern New England, and at two remarkable south- 

 ern stations in the Atlantic States (viz. on the Susquehanua, York Co., Peiin., Porter, and 

 Great Falls of the Potomac, Robbins, Vusey) : in the Rocky Mountains south to New Mexico 

 and Utah, perhaps also Sierra Nevada in California, there too like S. multiradiata, var. scopit- 

 lontin. The typical plant is narrow-leaved, with slender but rigid stems and virgate inflo- 

 rescence : it often becomes larger, broad-leaved, and with ample compound thyrsus; and on 

 mountains occurs a dwarf er broad-leaved form, passing to 



Var. nana. A western alpine form, analogous to 5. Virgaurea, var. alpina, 2 to 5 

 inches high, with spatulate to obovate leaves, and few heads in a close glomerate, or more 

 numerous in a spiciform thyrsus. S. Virgaurea, var. hnmilis, Gray, Proc. Am. Acad. viii. 

 389. S. Virguurea, var. alpina, Rothrock in Wheeler Rep. vi. 145. High Rocky Moun- 

 tains, Colorado (first coll. by Parry), and the Cascades of Oregon and Washington Terr., 

 Hall, Houxll, Suksdorf. 



Var. Gillmani, GRAY, Proc. Am. Acad. xvii. 191. Large, 2 feet high, rigid, in cul- 

 tivation with compound ample panicle, and laciuiate-dentate leaves. Sand-hills of the Lake 

 >l>orcs, N. Michigan, Gill man, W. Boott. 



S. COnfertiflora, DC. A foot or two high, strict, rigid, sometimes strikingly glutinous or 

 ivsinilVnms : leaves nearly of the preceding: heads smaller and numerous, fewer-flowered, 

 crowded in a virgate or pyramidal compound thyrsus. Prodr. v. 339 ; Fisch. & Meyer, 

 1ml. Srm. IVtrop. (1840), vii. 57. S. ghitinosa, Nutt. Trans. Am. Phil. Soc. 1. c. 328. .Coast 

 of Brit. Columbia to Oregon, first collected by Hcenke, with inflorescence incompletely evo- 

 lute. Shearwater Bay, Cooper. Sauvie's Island, Howell. Near Portland, Pringle, in a form 

 too near <S'. kumilis. 



i -i -i H California!! coast species: rays inconspicuous, shorter than the disk. 



S. spathulata, DC. Glabrous, glutinous: stem a foot high, few-leaved, terminated by a 

 single spicil'iinii thyrsus, the upper clusters of which are monocephalous, the lower 2-5-ceph- 

 alous, and about equalled by the small subtending leaves : lower and radical leaves spatulate, 



