730 REPORT OF NEW JERSEY STATE MUSEUM. 



It. Leaves lanceolate acuminate. 



DoeUingeria umbellata, p. 763 

 hh. Leaves ovate acute. D. u. humilis, p. 763 



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



D. iniirma, p. 764 

 ff. Flower heads 4 nun. broad. Leptilon canadense, p. 763 

 cc. No. pappus. 



d. Receptacle chafify. 



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



ec. Leaves alternate, finely pinnately divided. 

 f. Heads less than 10 mm. broad. 



[Achillaea iiiillifoliuinY 

 ff. Heads more than 10 mm. broad. [Anthcmis cotuhy 

 dd. Receptacle naked. 



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



[Chrysanthemum leuca)ithemum]* 

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

 bhh. Rays pink or blue. 

 c. Pappus present. 



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



dd. Leaves not stiff. 



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



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

 //. Heads less than 25 mm. broad. 



g. Stem leaves nearly all serrate. B. annutis, p. 762 

 gg. Stem leaves narrower, nearly all entire. 



B. ramosiis, 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. 



Serratida noveboracensis Linnreus, Sp. PI. S18. 1753 [New York, etc.]. 

 Vernonia noveboracensis Knieskern 17. — Willis 29. — Britton 12S. 



In open Suamps 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-eve Daisv. Common w^eeds of fields, etc. 



