30 THE FLORA OF THE ALPS 



winged silicule; Pyrenees, Dauphiny, Jura; and T. 

 prcBcox^ Wulf. (probably only a variety of the last); 

 Tirol, Styria, Carniola. T, perfolzatmn, L., with obcor- 

 date silicule and cordate amplexicaul stem-leaves, is 

 found in lowland calcareous districts; and T. arvense^ 

 L., Penny Cress, with broadly winged silicule and 

 sagittate stem-leaves, is a weed in cultivated land. 



31. Iberis, L. 



Sepals equal ; petals very unequal, the two outer ones 

 larger ; flowers white or pink ; silicule 2-seeded. 



/. amara^ L., Candytuft ; flowers usually white ; 

 cultivated land. Also the following in rocky places in 

 the Pyrenees : — /. spathulata ; leaves nearly orbicular, 

 flowers lilac. /. Bernardiana^ G. and G. (PI. 8), (/. 

 nana^ Lap.) ; sepals and petals violet, leaves linear- 

 oblong. /. ciliatay All. ; flowers white or slightly purple, 

 leaves linear, ciliated. /. Garrexiana, All., Perennial 

 Candytuft; flowers white, leaves thick, linear-obovate, 

 flower-stalk thickened in fruit. /. saxatilis ; leaves fleshy, 

 mucronate, flowers white, sepals coloured at the edge ; 

 also in Jura, Dauphiny. /. pinnata, L., with pinnate, 

 and /. pandurceformis, Pourr., with deeply toothed stem- 

 leaves, occur occasionally in cultivated ground. 



32. Tees D ALIA, Br. 



Flowers small, white ; petals usually unequal ; fila- 

 ments with a scale at the base. Not alpine. 



T. nudicatdis, Br. ; stem 4-6 in. high, leafless ; two 

 outer petals twice as long as inner ones; sandy and 

 gravelly places. 



