70 THE FLORA OF THE ALPS 



Z. arvense, L. ; flowers small, white, stem annual, 

 nutlets wrinkled ; cultivated land, common. L. officinale, 

 L., Gromwell ; flowers small, yellowish-white, stem per- 

 ennial, nutlets smooth, shining; road-sides. L.purpureo- 

 cceruleum, L. ; flowers large, purplish-blue, cymes few- 

 flowered ; mountain woods ; Southern Switzerland (rare). 

 Jura, Pyrenees. L. prostratum, Lois (PI. 87); flowers 

 large, bright blue, axillary, velvety - pubescent within, 

 stem prostrate, woody ; sandy places ; Pyrenees. 



6. ECHIUM, L. 



Flowers irregular, large, in unilateral cymes, throat 

 naked, filaments unequal, with exserted anthers ; leaves 

 hispid ; nutlets 4. Not alpine. 



E. vulgare, L., Viper's Bugloss ; flowers pink, then 

 blue, rarely white ; road-sides, common. E. italicum, L. ; 

 flowers smaller, white or light red, stem more branched; 

 Southern Switzerland (rare), Pyrenees. 



7. PULMONARIA, Tourn. 



Flowers regular, in terminal cymes; corolla funnel- 

 shaped, with five pencils of hairs between the stamens; 

 stamens included. 



P. officinalis, L., Lungwort ; flowers pale purple, leaves 

 ovate or ovate-lanceolate, acute, spotted with white; 

 thickets; Southern Switzerland, Dauphiny, Pyrenees. 

 P. obscura, JDumort. ; leaves cordate-oblong, acuminate, 

 twice as long as broad, spotted with white or not spotted, 

 flowers much smaller ; Switzerland. P- angustifolia, L. 

 [azurea, Bess.) ; leaves narrowly lanceolate, spotted with 



