178 DICOTYLEDONOUS PLANTS. 



* Flowers perfect. 



1. G.polyccphcdum Mich. : herbaceous, erect; leaves linear-lanceo- 

 late, acute, glabrous on the upper surface, pubescent beneath ; stem 

 paniculate, tomentose ; corymbs terminal, clustered. 



HAB. Fields. Can. to Car. W. to Miss. July Sept. . 

 Stem 12 feet high. Flowers in thick clusters forming a large 

 terminal corymb, pale yellow. Fragrant Life Everlasting. 



2. G. purpureum linn. : herbaceous ; stem erect, simple ; leaves li- 

 near-spathulate, tomentose beneath ; flowers sessile, clustered, axil- 

 lary and terminal. 



HAB. Barren soil. N. Y. to Car. July Oct. It. Stem erect 

 and assurgent, 812 inches high. Flowers in compact axillary 

 and sessile clusters, purplish. 



3. G. sylvaticum Linn. : stem herbaceous, very simple, nearly erect ; 

 leaves linear-lanceolate, downy on both sides ; flowers axillary, form- 

 ing a distant and leafy spike. 



HAB. Woods. Can. and N. S. July, Aug. It- Stem a foot 

 high. Flmcers sessile in the axils of the leaves, forming a more 

 or less interrupted spike. Scales of the involucre oblong, shin- 

 ing, with a broad brown border. 



4. G. americanum Linn. : stem herbaceous, erect, branching; leaves 

 obovate-spathulate, pubescent beneath ; flowers axillary and terminal, 

 in clustered spikes. 



HAB. Rocky woods. Penn. andVirg. July Sept. Q. Stem 

 6 10 inches high. Flowers small, pale yellow. 



5. G. \diginosum Linn. : stem herbaceous, branched, diffuse, woolly ; 

 leaves linear-lanceolate ; flowers in terminal crowded clusters which 

 are shorter than the leaves. 



HAB. Wet grounds. Can. and N. S. Aug., Sept. <$. Stem 

 a span high, very much branched. Flowers small, 2 3 togeth- 

 er, forming oblong clusters at tlje extremity of the branches. 

 Scales of the involucre yellowish-brown, shining. 



Marsh Cudweed. 



6. G. germanicum Smith. : stem herbaceous, erect, proliferous at tho 

 summit ; leaves lanceolate, acute, downy ; flowers capitate in the ax- 

 ils of the branches and terminal. 



HAB. Fields and pastures. Penn. and Virg. July, Aug. . 

 Stem 6 8 inches high, with numerous leaves. Flowers in a 

 globular head. Scults of the involucre yellowish, very acute. 



Common Cudweed. 



7. G. decurrens kes : stem erect, much branched ; leaves linear-lan- 

 ceolate, very acute, decurrent, white and woolly beneath, naked 

 above ; flowers in dense terminal roundish clusters. 



HAB. Hills. N, S. Aug. U.Stem I 1-32 feet high. Flvw- 

 ttrs yellowish. 



