ERICACEAE 47 



the last ; but raceme fewer-flowered, calyx-lobes oval-tri- 

 angular, corolla greenish ; woods ; Switzerland, Dauphiny, 

 Pyrenees, rare. P. secunda, L. ; raceme unilateral, leaves 

 ovate, acute, crenate-dentate ; woods, frequent. 



B. Flowers solitary, large ; petals slightly coherent : 

 P. uniflora, L. (Moneses grandiflora, Salisb.) (Fig. 69) ; 

 stigma 5-lobed, leaves nearly round, serrate; moist 

 woods, rare. 



C. Flowers in umbels : P. umbellata, L. (Chimaphila 

 umbellata, Nutt.) ; flowers in umbels of 5-6, pink ; leaves 

 in whorls, lanceolate, dentate ; moist woods ; Switzerland, 

 Vosges, Styria, rare. 



10. MONOTROPA, L. 



Leafless brown parasites on the roots of trees ; flowers 

 in racemes; petals saccate at the base ; calyx-lobes, corolla- 

 lobes, and stamens variable in number. Not alpine. 



M. Hypopithys, L. (including glabra, Bernh.), (Hypo- 

 pithys multiflora, Scop.), Bird's-nest; stem fleshy, whole 

 plant yellowish-brown ; fir and beech woods, occasional. 



Ledum palustre, L. ; an arctic bog-plant, with white 

 flowers in terminal umbels, is reported from Styria. 



Order L. PLUMBAGINE^E. 



Flowers regular ; calyx tubular, 5-lobed ; petals 5 ; 

 stamens 5; ovary superior, I -celled; ovule solitary, 

 suspended from a long basal funicle; fruit enclosed in 

 the persistent calyx-tube. A small widely distributed 

 order; the European species chiefly maritime. 



