730 REPORT OF NEW JERSEY STATE MUSEUM. 



/). Leaves lanceolate acuminate. 



Doellingeria umbcllata, p. 763 

 lih. Leaves ovate acute. D. u. Iiumilis, p. 763 



gg. Leaves at least the lower obovate, heads few. 



D. infirma, p. 764 

 ff. Flower heads 4 nun. broad. Lcptilon canadcnse, p. 763 

 cc. No. pappus. 



(/. Receptacle chaffy. 



e. Leaves opposite, lanceolate or oblong. [Eclipta albaY 



ee. Leaves alternate, finely pinnately divided. 

 f. Heads less than 10 mm. broad'. 



[Achillaea millifolium]* 

 ff. Heads more than 10 mm. broad. [Anthentis cotula]* 

 dd. Receptacle naked. 



e. Head 40-60 mm. broad, leaves spatulate or oblong, dentate. 



[Chrysanthemum Icucanthcmutn]* 

 ee. Head smaller, leaves lanceolate entire. Boltonia, p. 753 

 bbb. Rays pink or blue. 

 c. Pappus present. 



d. Leaves narrowly linear, very stiff. lonactis, p. 764 



dd. Leaves not stiff. 



e. Bracts of the involucre in i or 2 series. 



/. Heads over 25 mm. broad. Erigeron pulchellus, p. 762 

 ff. Heads less than 25 mm. broad. 



g. Stem leaves nearly all serrate. E. annttus, p. 762 

 gg. Stem leaves narrower, nearly all entire. 



E. ramosus, p. 762 

 ee. Bracts in 2 — many series. Aster, p. 754 



cc. No pappus, plants glabrous. 



d. Receptacle chaffy, leaves linear, entire. Coreopsis, p. 771 



dd. Receptacle naked, leaves lanceolate, entire. Boltonia, p. 753 



VERNONIA Schreber. 



Vernonia noveboracensis L. Iron-weed. 



Serratula noveboracensis Linnaeus, Sp. PI. 818. 1753 [New York, etc.]. 

 Vernonia noveboracensis Knieskern 17. — Willis 29. — Britton 128. 



In open swamps and meadows, common, except in the Pine 

 Barrens, where it is found only on the intruding- strips of coast 

 flora which follow up the tidewater streams. 



The purple blossoms of the Iron-weed always recall the 

 meadow pastures of Pennsylvania, where clumps of this plant, as 



^ Eclipta. Apparently entirely a weed in New Jersey. 



' Yarrow. 



^May Weed. 



* Ox-eye Daisy. Common weeds of fields, etc. 



