OF ARTS AND SCIENCES. 191 



■M- ++ Of the high mountains. 



S. GLOMERATA, Michx. Does not well accord with the name, the 

 large heads when well developed being loosely disposed or scattered. 

 S. spiTUAM^A, M. A. Curtis. 



-1- -1- •)- Boreal-montane, of difficult and uncertain limitation. 

 ++ Bracts of the involucre acute. 



S. JiACROPHTLLA, Pursh. S. t/ii/rsoidect, E. Meyer, Torr, & Gray, 



FL, &c. *S'. leiocarpa, DC. N. New England and Lake Superior to 



Hudson's Bay. 

 S. MULTiRADiATA, Ait. S. Vtrffaurea, var. multiradiata^ Torr. & 



Gray, Fl. Labrador to Northern Rocky Mountains and Unalaska. 



— Var. SCOPULORUM. S. corymbosa, Nutt. in Trans. Am. Phil. 



Soc. Higher Rocky Mountains to New Mexico, Utah, &c. — Var. 



Neo-Mexicaxa. a tall form, perhaps quite distinct, two feet 



high, with numerous heads loosely disposed in approximate axillary 



as well as terminal clusters, forming a narrow elongated thyrsus. 



High summit of one of the Mogollon Mountains, H. H. Rusby, 1881. 



And a form approaching it was collected by Dr. Palmer in Utah. 

 S. ViROAUREA, L., var. alpina, Bigelow. Alpine region of the 



mountains of Maine, New Hampshire, and Northern New York. 



Also Hudson's Bay (?). 



•H- ++ Bracts of the involucre obtuse. 

 S. HUMiLis, Pursh, not Desf. — Var. Gillmani is an extreme form 



of this variable species, with dentate even laciniate leaves and an 



open compound panicle ; growing on sand hillocks on the shores 



of Lakes Superior and Michigan. 

 S. CONFERTIFLORA, DC, S. glutinosa, Nutt., of Oregon to British 



Columbia, near the coast, is probably only another form of S. 



humilis. 



-I— -1— H— -!- California coast species, with few heads and incon- 

 spicuous rays. 



S. SPATHULATA, DC. S. spiciformis^ Torr. & Gray, Fl. Hajnke's 

 plant is from Monterey, California. 



* * * * Paniculate. 

 -1— Maritimce, Icevigatce. 

 S. cONPixis. Apparently pale green; leaves lanceolate and rather 

 short, or the radical obovate; heads small (two lines long), crowded 



