June, 1()171 The BrassicacecB of Ohio 313 



1. Draba verna L. Vernal Whitlow-grass. Scapes numer- 

 ous, 1-5 in. high; leaves basal, rosulate, 3^-1 in. long, oblanceolate 

 pubescent, nearly entire; racemes elongating, flowers small, 

 cleistogamous; pods \-\ in. long, shorter than the pedicels. 



In fields and on roadsides, naturalized from Europe. Portage 

 County and southern half of state. 



2. Draba caroliniana Walt. Carolina Whitlow-grass. Scapes 

 short, leafy below, 1-5 in. high; leaves obovate, entire, sessile, 

 pubescent, ^-1 in. long; petals sometimes wanting; pods broadly 

 linear, crowded. 



Indigenous winter-annual in sandy fields, flowering early. 

 Adams, Clark, Erie and Ottawa Counties. 



5. Camelina Crantz. False-flax. 



Erect annual herbs with entire or toothed leaves and small 

 yellow flowers in long racemes. Silicles obovoid, style slender. 

 Seeds many, oblong, in two rows in each cavity, wingless. 



1. Glabrous, pods large. C. saliva. 



1. Pubescent, pods small. C. microcarpa. 



1. Camelina sativa (L.) Crantz. Common False-flax. Stem 

 simple or nearly so, 1-2 ft. high; lowest leaves lanceolate, 2-3 

 in. long, toothed, petioled; upper leaves smaller, entire, sagit- 

 tate, sessile; flowers numerous, pods obovoid, spreading, 

 pedicels slender. 



A weed in fields, naturalized from Europe. Auglaize, 

 Franklin, Miami, Montgomery, Sandusky. 



2. Camelina microcarpa Andrz. Small-fruited False-flax. 

 Stem as in C. sativa, but pubescent and more slender; leaves 

 lanceolate, sessile and clasping, or narrowed at the base; pods 

 smaller. 



A weed in cultivated fields, naturalized from Europe. Clark 

 County. 



6. Bursa (Siegesb.) Weber. Shepherd' s-purse. 



Annual or winter-annual erect herbs, pubescent with forked 

 hairs, with rosulate basal leaves and small white flowers in 

 racemes. Silicles triangular, emarginate, flattened at right 

 angles with the partition. Seeds 10 or 12 in each cavity, 

 wingless. 



1. Bursa bursa-pastoris (L.) Britt. Shepherd's-purse. Stems 

 from a long taproot, branching, 6-20 in. high; basal leaves 



