148 COMPOSITJE. SoUdago. 



Var. SCOpulorum, Geat, 1. u. More glabrous, 3 to 18 inches high, commonly strict: 

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

 involucre closer, shorter, and merely acute. — S. corymbosa, Nutt. 1. c. {S. heterophy/la in 

 herb.). — Along the higher Rocky Mountains to New Mexico, Utah, &c., the Cascade Moun- 

 tains, and rare (in a dwarf state) along tlie .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 6\ macrophylla. — High summits of the MogoUon Mountains, 

 N. Mexico, Rusby. A doubtful plant. 

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

 tns (of which S. maa'ophylla is the American representative) reaches the Asiatic side of Beh- 

 ■"— ring Strait, and seems to pass into 6'. multiradiuta. — -The var. Cumbrica is represented by 



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

 leaves few, thickish, 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 1 Seems nearly to pass into S. humilis, and like 

 that to be somewhat viscid. 



■w- -H- ' Bracts of the involucre obtuse. 



-S. hlimilis, Pursh. Glabrous, disposed to be glutinous, bright green: stems strict, a span 



to a foot high, leafy : 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 base, sparingly appressed-serrate above the middle : heads (3-J 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 ])esf. & DC. S. strida, Hook. 

 1. c, partly. S. Virgaurea, \a,v. hurnitis. Gray, Man. 241. — Rocky ground, Newfoundland to 

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

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

 (ireat Falls of the Potomac, Bobbins, Vaxey) : in the Rocky Mountains south to New Mexico 

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

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

 rescence: it often liecomes 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 5. Vir<jaurea, var. njpina, 2 to 5 

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

 numerous in <i spiciform thyrsus. — S. Virgaurea, var. humdis. Gray, Proc. jVm. .Uad. viii. 

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

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

 Ball, Howell, Siihrlorf. 



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 

 sbores, N. Michigan, Glltman, \V. Boolt. 



— • 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. & Jlovcr, 

 Ind. Sem. Petrop. (1840), vii. 57. S. gliilliwsa, Nutt. Trans. Am. Phil. Soc. 1. c. 32S. — Coast 

 of Brit. Columbia to Oregon, first collected by Ihv.nlce, with inflorescence incom]iletcly cvo- 

 lute. Shoalwatcr Bay, Cnopir. Sau\'ic's Island, Howell. Near Portland, Pringle, in a' form 

 too near S. humdis. 



-1— ■<- -1- -1— Cahfoniian coast species: rays inconspicuous, shorter than tlie disk. 

 S. spathulata, DC. (;ial)riius, glutinous: stem a foot high, few-leaved, terminated by a 

 single spiciform thyrsus, the upper dustei's of which are monoceplialous, tlie lower 2-5-ceph- 

 alous, and al)Out equalled by the small subtending leaves : lower and radical leaves spatulate, 



