32 THE FLORA OF THE ALPS 



36. ISATIS, L. 



Petals equal; flowers 3^ellow; silicule compressed, 

 flat. 



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

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

 /. alpzna, All. ; a smaller more leafy plant, flowers larger, 

 bright yellow ; pastures ; Pyrenees, Dauphiny. 



37. Neslia, Desv. 



Petals equal ; flowers yellow ; silicule globular. 



N. paniciilata, 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; grass}^ 

 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. Enicago, L. ; flowers small, 3^ellow, radical leaves 

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

 and Southern Switzerland. 



