CRUCIFEROUS TRIBE. 

 3. HUTCHINSIA. 



43 



1. H. petrcea (Rock Hutchinsia). The only British 

 species. A pretty little plant, from 2 to 4 inches high, 

 growing on limestone rocks in several parts of England 



HUTCHINSIA PETR^A 



and Wales. The leaves are elegantly pinnate ; the petals 

 white, and scarcely longer than the calyx ; the seeds two 

 L each cell. Fl. March, April. Annual. 



4. TEE&DALIA. 



1. T. nudicaulis (Naked-stalked Teesdalia). The 

 only British species. A minute and not an inelegant 

 plant, bearing several stems, which terminate in small 



