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. corymhosa, Nutt. 1. c. [S. heterophylla in 

 herb.). — Along the higlier 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 »S\ macrophyUa. — High summits of the Mogollou Mountains, 

 N. Mexico, Rusby. A doubtful plant. 

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

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

 ring Strait, and seems to jjass into S. multiradiuta. The var. Cambrlca is represented by 



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

 leaves few, thickisli, spatulate or obovate, mostly obtuse; cauline 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: akenes pubescent. — Fl. Bost. ed. 2, 307; Torr. & 

 Gray, 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 S. humilis, and like 

 that to be some\vhat viscid. 



++ -H- Bracts of the involucre obtuse. 



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

 to a foot high, leaf}' : leaves of firm texture and fine venation, smooth ; cauline all sessile ; 

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

 attenuate ba.se, sparingly a])pressed-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. .S. stricki, Hook. 

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

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

 ern stations in tlie Atlantic States (viz. on the Susquehanna, York Co., Penn., Porter, and 

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

 and Utah, perhaps also Sierra Nevada in California, tliere too like S. inultiradiata, var. scopu- 

 lorum. 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 dwarfer broad-leaved form, passing to 



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

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

 numerous in a spiciform thyrsus. — 6\ Virganre<t, var. humilis, Gray, Proc. Am. Acad. viii. 

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

 tains, Colorado (fir.st coU. by Parry), and the Cascades of Oregon and Washington Terr., 

 Hall, llou-ell, Suksdorf. 



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

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

 shores, N. Michigan, Gillman, W. Boott. 



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

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

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

 Ind. Sem. Petrop. (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. Shoalwater Bay, Cooper. Sauvie's Island, Howell. Near Portland, Pringle, in a form 

 too near S. humilis. 



-i— -I— -1— -1— Californian coast species: rays inconspicuous, shorter than the disk. 



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

 single spiciform 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. 



