202 COMPOSITAE 



6. H. hlrsutus Raf. l°-6° hij^li, bristly-hirsute to nearly glabrous : 

 leaves ver^' variable in size, entire or serrate, very rough above, rough- 

 pubescent beneath : involucral scales loose, ciliate. — Dry woods through- 

 out. Verj' abundant in the southern part. July-September. 



7. H. petiolaris Nutt. l°-6° high, strigose-hispid : leaves ovate- 

 lanceolate, entire or denticulate, rough : involucral scales lanceolate, 

 canescent. — Frequently introduced along railroads and in waste places. 

 Apparently native along the Missouri River. July -October. 



8. H. annuus L. 2°-15° high, scabrous : leaves broadly- ovate, serrate, 

 rough : heads ?/-\2^ broad : involucral scales ciliate. — In waste places, 

 especially abundant around Kanstis City. July-October. 



9. H. tubercsus L. 4°-12° high, hirsute : leaves ovate oblong, ser- 

 rate, petioled, rough above, pubescent beneath. — In low grounds through 

 out, running into but much less common than 



Var. subcauescens A. Gray. Leaves white-canescent beneath. — 

 Abundant in low grounds. July-October. 



28. VERBESINA L. Crown Beard. 



Involucral bracts imbricated in a few series. Kay flowers pistillate or 



neutral. Disk flowers perfect. Leaves decurrent. 



Stems l°-2° high, whitish-canescent. \. V. encelioides. 

 Stems 3°-8° high, not whitish canescent. 



Leaves densely hairy beneath. 2. V. helianlhoides. 



Leaves slight!}' appressed-pubescent beneath. 3. V. alternifolia. 



1. V. encelioides (Cav.) A. Gray. Annual : leaves ovate-lanceolate 

 petioled : heads V broad : involucral scales canescent, erect. — Found as 

 a waif along roads northeast of Independence and at Courtney. May-.Iune. 



2. V. helianthoides Michx. Perennial : leaves ovate, sessile, serrate : 

 stem strongly winged : heads 2''-3'' broad : involucral scales rough, 

 erect. — Occurs locally in dry woods near Tarnsey, Lee's Summit and 

 Westport. June-September. 



3. V. alternifolia (L.) Britton. Perennial: leaves lanceolate, short- 

 petioled, serrate : stem winged : heads 12^^-20^'' broad : disk globose : 

 involucral .scales much shorter than the flowers, soon deflexed. — Common 



in rich woods. 



29. COREOPSIS L. Tickskkd. 



Involncral bracts in two series, the outer spreading, the inner broader 

 and appressed. Kay flowers neutral. Disk flowers perfect. 



Rajs entire. 1. C. tripteris. 

 Rays 3-5-toothed. 



Leaves 3 lobed. 2. C. palmata. 

 Leaves pinnately parted. 



Kays pure yellow. 3. C. grandiftorn, 



Kays brownish at ba.se. 4. C. tindorin. 



1. C. tripteris L. Glabrous perennial, 4°-8° high : leaves petioled, 

 pinnately divided into 3-5 lanceolate entire leaflets : pappus none. — Not 



