32 THE FLORA OF THE ALPS 



36. ISATIS, L. 



Petals equal; flowers yellow; silicule compressed, 

 flat. 



/. tinctoria, L., Dyer's Woad; stem erect, branched, 

 stem-leaves arrow-shaped ; cultivated land in the South. 

 7. alpina, All. ; a smaller more leafy plant, flowers larger, 

 bright yellow ; pastures ; Pyrenees, Dauphiny. 



37. NESLIA, Desv. 



Petals equal ; flowers yellow ; silicule globular. 



N. paniculata, Desv. ; stem slender, branched, leaves 

 entire or slightly toothed, silicule wrinkled, flowers 

 small, pale yellow; pastures; Jura, Pyrenees. 



38. CALEPINA, Adans. 



Petals unequal ; silicule globular, beaked. 



C. Corvini, Desv. ; flowers small, white, the two outer 

 petals larger than the two inner ones, radical leaves 

 runcinate, stem-leaves auricled, arrow-shaped; grassy 

 places ; Southern Switzerland, Pyrenees. 



Tribe BUNIADE^E. Silicule indehiscent, with 2-4 

 i -seeded loculi. 



39. BUNIAS, Br. 



Petals equal, entire or emarginate; silicule 4-angled. 

 Not alpine. 



B. Erucago, L. ; flowers small, yellow, radical leaves 

 runcinate, stem-leaves lanceolate, sessile; fields; Western 

 and Southern Switzerland. 



