70 THE FLORA OF THE ALPS 
L. arvense, L.; flowers small, white, stem annual, 
nutlets wrinkled ; cultivated land, common. LL. officinale, 
L., Gromwell; flowers small, yellowish-white, stem per- 
ennial, nutlets smooth, shining; road-sides. L. purpureo- 
ceruleum, L.; flowers large, purplish-blue, cymes few- 
flowered; mountain woods; Southern Switzerland (rare), 
Jura, Pyrenees. ZL. prostratum, Lois (Pl. 87); flowers 
large, bright blue, axillary, velvety - pubescent within, 
stem prostrate, woody ; sandy places; Pyrenees. 
6. EcHIuUM, 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. J£. ztalicum, 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, Dumort.; leaves cordate-oblong, acuminate, 
twice as long as broad, spotted with white or not spotted, 
flowers much smaller; Switzerland. P. angusttfolza, L. 
(azurea, Bess.) ; leaves narrowly lanceolate, spotted with 
