BLACK-EYED SUSAN 



Daisy field is a joy to every one but the farmer; to him 

 it is a menace and a pest, to be destroyed without 

 mercy. 



The flower-head is very interesting, the twenty 

 or more ray-florets making a frame for the golden- 

 yellow disk.^ Each ray is rather broad, veined, and 

 toothed at tip, each is fertile and matures seed. The 

 central disk is made up of many circles of tubular 

 florets, the outer circles blooming while the inner 

 remain buds. In each disk-floret the five anthers 

 make a yellow tube full of pollen which is pushed out 

 by the style which rises through it. After the pollen 

 is scattered the style opens its two arms ready to 

 receive any pollen that comes its way. 



BLACK-EYED SUSAN. YELLOW DAISY 



Rudbeckia hirta 



RudhecUa, in honor of Glaus Rudbeck, a Swedish 

 botanist. 



Both annual and biennial. Native to Colorado and 

 Central States. A Composite with beautiful flower-heads 

 of orange-yellow rays and a dark, conical centre. Stems 

 grow in tufts, and several flower-heads are in bloom at 

 the same time. June-September. 



Stems. — One to three feet high, strong, erect, rough, and 

 hairy, sparingly branched, growing in tufts. 



Leaves. — Alternate, oblong to lanceolate, thick, rough, 

 sparingly serrate or entire, acute. Lower leaves petioled; 

 upper leaves sessile. 



Flower-head. — Radiate-composite, conspicuous. Ray- 

 florets, ten to twenty, orange-yellow, notched at the tips, 

 with two faint parallel veins running their length, pistil- 

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