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This perennial of the aster family of plants has an erect habit of 

 growth, and sends up a round, smooth stem about a foot and a half 

 high, narrowly grooved and freely branching near the top, each 

 branch terminating in a large yellow flower. The branches near the 

 flower heads have a slightly reddish appearance. 



The pale-green leaves are about an inch long, of a leathery texture, 

 rather rigid, coated with resin, and show numerous translucent dots. 

 The leaves are oblong-spatulate (having a gradually narrowed base 

 below the broader rounded summit) and are more or less clasping at 

 the base, the lower ones somewhat saw-toothed. 



The yellow flowers are borne singly at the ends of the branches and 

 measure about three-quarters of an inch across. The involucre (set of 

 small leaves immediately beneath 

 the flower) is very resinous and 

 consists of numerous thick, over- 

 lapping scales, the tips of which 

 are rolled forward. 



Parts used and prices. — The 

 flowering tops and leaves of this 

 and of the scaly ffrindelia are col- 

 lected indiscriminately, and brino- 

 from 5 to 12 cents per pound. 



They are used in asthma and 

 similar affections, and externally 

 in cases of poisoning by poison 

 ivy. 



SCALY GRINDELIA. 

 Grindelia squarrosa (Pursh) Dunal. 



Range. — Scaly grindelia (fig. 

 18) has a wider distribution than 

 tin- gum plant, being quite com- 

 mon on the plains and prairies 

 from the Saskatchewan to Min- 

 nesota, south to Texas and Mex- 

 ico, and westward to California. 



Description. — This species is 

 very similar to the gum plant, 

 with the exception that it is 

 smaller and does not have the gummy appearance of the former. The 

 slender, erect -terns are from 1 to 2 feet high and somewhat sparingly 

 branched near the top. The branches near the flower heads appear to 

 be somewhat more reddish than in the species previously mentioned. 

 In this species, also, the leaves are not borne on stalks, but are some- 

 what clasping at the base, and they are longer (about 2 inches long), 



Fig. 18.— Scaly grindelia (Grindelia squarrosa 

 (Pursh) Dunal). 



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