320 The Ohio Journal of Science [Vol. XVII, No. 8, 



3. Cheirinia aspera (DC.) Britt. Western Cheirinia. Stem 

 nearly simple, hoary-pubescent, 1-3 ft. high; leaves narrowly 

 lanceolate, usually dentate, 1-2 in. long; flowers large, orange- 

 yellow, in a close raceme; petals orbicular, on slender claws; 

 pods 1-4 in. long, rough, spreading on slender pedicels, 4-sided. 



An indigenous biennial, in open places. Franklin County. 



19. Erysimum (Tourn.) L. Hedge-mustard. 



Tall erect annual herbs, with pinnatifid leaves and small 

 yellow flowers in racemes. Siliques linear, round. Seeds 

 many, in 1 row in each cavity, marginless. 



1 Erysimum officinale L. Hedge-mustard. Stem branch- 

 ing, somewhat pubescent, 1-3 ft. high; leaves runcinate, the 

 lower petioled, the upper sessile, lobes 7-13, the end lobe largest; 

 flowers pale yellow; pods linear, \ in. long, closely appressed 

 to the stem. Lower leaves sometimes rosulate. 



A common weed in waste places, naturalized from Europe. 

 General and abundant. 



20. Norta Adans. Hedge-mustard. 

 Erect annual herbs, with pinnatifid leaves, and medium- 

 sized yellow flowers in loose racemes. Siliques very long, 

 linear, terete, spreading or ascending. Seeds wingless, in 1 

 or 2 rows in each cavity. 



1. Pods spreading; leaves runcinate-pinnatifid. N. altissima. 



1. Pods ascending; leaves runcinate, with a large terminal segment. N. trio. 



1. Norta altissima (L.) Britt. Tall Hedge-mustard. Stem 

 glabrous, much branched, 2-4 ft. high; lower leaves narrowly 

 runcinate, upper leaves pinnatifid into narrow segments; 

 flowers pale yellow; pods 2-4 in. long, rigid, spreading. 



A bad weed introduced from the Northwest, but native 

 of Europe. Belmont, Cuyahoga, Erie, Greene, Jackson, Lake, 

 Ottawa, Portage, Wayne. 



2. Norta irio (L.) Britt. Longleaf Hedge-mustard. Similar 

 to N. altissima. Leaves runcinate-pinnatifid, the terminal 

 segment large. 



In waste places, adventive from Europe. Portage County. 



21. Conringia (Heist.) Adans. Hare's-ear Mustard. 



Annual erect glabrous herbs, with elliptic, entire sessile 

 or cordate-clasping leaves, and yellowish white flowers in 

 terminal racemes. Sepals and petals narrow. Siliques linear, 

 4-angled, bilocular. Seeds wingless, in 1 row in each cavity. 



