232 COMPOSITE FAMILY. 



9. GRINDELIA. (//. Omrfe/, a Russian botanist.) (p. 220.) 



G. squarr6sa, Dunal. IJranching leafy herb, a foot or two high, on 

 prairies from HI., W. ; also cult. Leaves spatulate-oblong, or narrower ; 

 involucre with strongly spreailiiig or sipiarrose bracts witli shnrt-lilifonn 

 tips; pappus of 2 or 3 awns. l'su;illy 2/. There is a raylcss t'drin. 



10. CHRYSOPSIS, GOLDEN ASTER. ((Jreek: c/ohlen appear- 

 ance, frniu tile yellow liowers.) Low herbs, wild chiefly S. and W., in 

 dry and barren or sandy soil ; flowers summer and autumn. 21- 



^"' ""' '' * Leaves and akene.s linear or nearly so. 



C. graminif61ia, Nutt. Silvery-silky, with long, lance-linear and grass- 

 like, shining, nerved leaves, and single or few heads. Del., S. 



C. falcata. Ell. Only 4'-10' high, woolly, clothed to the top with short 

 and linear, 3-nerved, rigid leaves, which are often curved or scythe-shaped ; 

 heads small, corymbed. On the coast from Cape Cod to N. J. 



* * Leaves ohlong or lanceolate ; akenes obovate, flattened. 



C. gossypina, Nutt. White-cottony all over (whence the name), with 

 oblong, obtuse, rarely toothed leaves, and few pretty large heads. Va., S. 



C. Mariana, Nutt. The commonest species, from L. I., S. ; silky, with 

 long and weak hairs, or smoothish when old, with oblong leaves, and a 

 few corymbed heads on glandular peduncles. 



C. villdsa, Nutt. Coarsely hairy and somewhat hoary, leafy to the 

 top, with corymbed branches bearing single heads on short peduncles, 

 and narrow-oblong leaves. Wis., S. and W. 



11. SOLIDAGO, GOLDEN-ROD. (From Latin: to make ichole, 

 from supposed healing qualities.) 2/ Characteristic plants of the 

 American autumn. The following synopsis includes the most impor- 

 tant species. For a fuller account, see the Manual and Chapman's 

 Flora (p. 225). 



* Heads sessile and small, in flat-topped corymbs; leaves linear. 



S. lanceolata, Linn. Leaves lance-linear, 3-5-nerved ; rays 15-20. 



N. and S. 



S. tenui{61ia, Pursh. Leaves linear, 1-ncrved, dotted ; rays 6-12. 



N. and S. 



* * Heads all more or less pediceled, usually larrjer ; leaves usually 

 broader. 



•t- Scales of invfducre loith green herbaceous spreading tips. 



S. squarr6sa, Muhl. Leaves large, oblong, or lower ones spatulate- 

 oval ; heads numerous, with 12-lG rays. Me., W. and S. 



S. petioliris, Ait. Leaves small, oval or oblong, mncronate ; heads 

 few, in a wand-like raceme or panicle ; rays about 10. 111., S. and W. 



-t- -t- Scales not green, nor conspicuously spreading. 



++ Heads in small clusters in the leaf-axils (or the uppermost sometimes 

 becoming glomerate-spiked) . 



= Akenes pubescent. 



S. cssia, Linn. Stem cylindrical, glaucous; leaves lanceolate, ser- 

 rate, .sessile ; clusters very short, in upper axils, sometimes racemose on 

 the branches. N. and S. 



