502 



Cruciferae 



Capsella 



50 



Map 1032 



Capsella Bursa -pastoris (L ) Med 



ic 



50 



Map 1033 



Camelina microcarpa Andrz. 



50 



Map 1034 



Draba brachycarpa Nutt. 



2983. LESQUERELLA Wats. 



See excluded species no. 269, p. 1053. 



2986. CAPSELLA Medic 



1. Capsella Bursa-pastoris (L.) Medic. Shepherd Purse. Map 1032. 

 A frequent to common weed throughout the state in cultivated grounds, 

 lawns, and pastures and along roadsides and railroads. The plant is very 

 variable and has been the subject of much study by Almquist and Shull. 

 Almquist, in 1920, writes as follows: "Among 370 races from different 

 countries I was able to find at least 70 species that remained constant in 

 culture during two or three generations. At present I have published 

 descriptions of 200 constant forms." My specimens are variable, and, no 

 doubt, several of the elementary species of this complex occur in Indiana. 



Nat. of Eu. ; widely distributed throughout the world. 



2987. CAMELINA Crantz 



Stems and leaves pubescent; pods 4-5 mm wide l.C. microcwpa. 



Stems and leaves glabrous or with scattered hairs; pods 6-7 mm wide. (See excluded 

 species no. 270, p. 1053.) C. sativa. 



1. Camelina microcarpa Andrz. Map 1033. This species is essentially 

 a sandy ballast plant and is more or less frequent throughout the state. 

 I have found it also along sandy roadsides and in sandy, fallow fields 

 where I once found it as an abundant weed. 



Nat. of Eu. ; Newf. to B. C, southw. to R. I., Va., Kans., and Ariz. 



2988. NESLIA Desv. 

 See excluded species no. 271, p. 1053. 



2989. DRABA [Dill.] L. 



Plants conspicuously branched and leafy to the flowers, appressed-pubescent throughout 

 except the glabrous pods; flowers purplish; pedicels of the mature pods rarely 

 more than 2 mm long; pods about 4 mm long, glabrous 1. D. brachycarpa. 



