125. COMPOSITAE 261 



1. Plants annual; leaves chiefly alternate; disk usually brownish- 

 purple; stem hispid or strigose. 



15. Leaves lanceolate, usually entire; stem 30-90 cm tall; disk 1.5 

 cm broad; bracts lanceolate, densely scabrous; sandy soil, 

 roadsides, waste-places, occasional; ad\'. from w. U.S. June- 

 Sept H. petiolaris Nutt. 



15. Leaves ovate, dentate; stem 1-4 m tall; disk 2.5-4 cm broad; 

 bracts ovate-lanceolate, ciliate and hispid; fields and road- 

 sides, and often cultivated; native west of the Mississippi R. 

 Aug.-Sept. Garden Sunflower H. animus L. 



35. Verbesina L. — Crownbeard 



[Actinomeris Nutt.) 



1. Stem more or less winged, at least on the upper part, by the de- 

 current bases of the leaves; plants perennial. 

 2. Rays yellow, 2-3 cm long. 



3. Stem usually branched toward the summit, 1-2 m tall; heads 

 several to many; rays 2-8; alluvial soil, open woods or 

 along roads, common throughout 111. Aug.-Sept. Yellow 

 Ironweed. [Actinomeris squarrosa Nutt.; A. alternifolia 



(L.) DC] V. alternifolia (L.) Britt. 



3. Stem simple, 60-90 cm tall; heads few (2-8); rays 8-15; 

 open woods and along roads from Peoria and Vennilion 



counties southward. May-July. Yellow Crownbeard 



V. helianthoides Michx. 



2. Rays 3-4, white, 4-7 mm long; heads small, numerous; sandy 



or rocky soil, s. 111., not common. July-Aug. Tickweed 



V. virginica L. 



1. Stem wingless, 30-70 cm tall, cinereous-pubescent; leaves deltoid, 

 petioled, canescent beneath; rays yellow, 1-2 cm long; plants 

 annual; waste ground, St. Clair Co.; adv. from w. U.S. June- 

 Aug. Golden Crownbeard ....V. encelioides (Cav.) Benth. & Hook. 



36. Melanthera Rohr 



M. hastata Michx. Flood-plain woods along Ohio R., Pulaski 

 Co., Mohlenbrock, Abney, & Dillard in 1959; adv. from s. L\S. 



37. Coreopsis L. 



1 . Leaves simple, entire or palmately cleft or divided ; achenes wing- 

 margined; plants perennial. 

 2. Leaves entire, or rarely with 1 or 2 lateral lobes. 



3. Leaves mostly near the base of the stem; heads long-pe- 

 duncled; sandy soil. June-July; [C. lanceolata var. villosa 



Michx.; C. crassifolia Ait.] C. lanceolata L. 



3. Stem leafv; plants pubescent; roadsides, fields, and woods; 



Jackson, Pope, St. Clair, and Washington counties 



C. pubescens Ell. 



