92 THE FLORA OF THE ALPS 



linear incised segments ; alpine pastures (not in Switzer- 

 land). P. recutita, L. ; stem 1-2 ft., glabrous, leafy, 

 flowers dark red, in a long dense spike, calyx-teeth 

 lanceolate, entire, ciliate, leaves pectinate-pinnatifid, with 

 broad segments; high, moist, frequent. P. atrorubens, 

 Schleich. ; spike very dense, corolla dark purple-red, 

 calyx-teeth broadly lanceolate, finely serrate; Great St. 

 Bernard, Tirol, rare. 



E. Flowers pink ; stem-leaves in whorls : P. verti- 

 cillata, L. ; stem simple, with a few whorls of 3-5 narrow 

 pinnatifid leaves, flowers in crowded orbicular spikes, 

 calyx inflated, corolla not beaked; alpine pastures, 

 frequent. 



F. Flowers pink ; stem o : P. acaulis. Scop. ; flowers 

 very large, light pink, turning to red, shortly stalked, 

 springing from the root-stock, calyx-teeth strongly den- 

 tate, leaves large, pinnate, with pinnatifid segments ; 

 bushy places, rare ; Lombardy, Southern Tirol, Carniola. 



19. LATHR^EA, L. 



Leafless root-parasites ; calyx 4-cleft ; corolla 2-lipped, 

 ringent ; stamens 4. 



L. squamaria, L., Tooth wort; whole plant fleshy, 

 yellowish-white or light purple, raceme unilateral, droop- 

 ing ; parasitic on the roots of hazel and other shrubs ; 

 occasional. L. clandestine L. ; stem o, flowers in a few- 

 flowered corymb ; damp places in sub-alpine woods ; 

 Pyrenees. 



