LENTIBULACE^. 



549 



throat of the corolla attached laterally to 

 the receptacle, and projected below into 

 a slender spur about its own length ; the 

 lobes broad, the 2 upper ones (next the 

 calyx) considerably shorter than the 3 

 lower ones. Capsule ovate, longer than 

 the calyx. 



Along mountain rills and on wet rocks, 

 in northern Europe, all round the Arctic 

 Circle, and along the mountain-ranges 

 of central and southern Europe and 

 Russian Asia. In Britain, chiefly in the 

 western hilly districts of England and 

 Scotland, and in Ireland. Fl. summer, 

 commencing very early. A large-flowered 

 and very handsome variety, with broader 

 lobes and a long spur to the corolla, and a more obtuse capsule, (P. 

 grandiflora, Eng. Bot. t. 2184) occurs in the bogs of south-western 

 Ireland, and here and there in the western parts of the continent of 

 Europe, where however it passes gradually into the commoner form. 



Fig. 656. 



2. Alpine Butterwort. Pinguicula alpina, Linn. (Fig. 657.) 



(Eng. Bot. Suppl. t. 2747.) 



Generally a smaller plant than the 

 common B., with much smaller flowers, 

 of a pale-yellow or slightly purplish co- 

 lour. The spur is short and obtuse, the 

 lobes of the corolla unequal and broad, 

 the middle one of the lower lip much 

 longer and broader than the two lateral 

 ones. 



A very northern or high alpine plant, 

 common in the Arctic regions of Europe 

 and Asia, and along the higher ranges of 

 central Europe and Russian Asia. In 

 Britain it has only been found in the 

 extreme north of Scotland. FL early 

 summer. 



Fig. 657. 



3. Pale Butterwort. Pinguicula lusitanica, Linn. (Fig. 658.) 



(Eng. Bot. t. 145.) 

 Leaves of the common B., but usually smaller. Peduncles very 



