Pinguicula.-] XLVII. LENTIBULAOEJC. 295 



Flowers violet-purple, often large. Spur long, slender, and nearly 



straight 1. P. vulgaris. 



Flowers yellow or pale-coloured. Spur small, conical or curved. 

 Spur very short, nearly straight. Middle lobe of the lower lip 



of the corolla much larger than the others. Upper lip short 2. P. alpina. 

 Spur curved. Lobes of the lower lip of the corolla nearly equal, 

 ^L and scarcely longer than the upper lip 8. P. lusitanica. 



1. P. vulgaris, Linn. (fig. 664). Common B. Leaves spreading, 

 ovate or broadly oblong, of a light green, somewhat succulent, and 

 covered with little crystalline points, which give them a wet, clammy 

 appearance. Flower-stalks 3 to 5 inches high, with a single handsome, 

 bluish-purple flower ; the broad, campanulate 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. 



Among 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, Lam., 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. 

 [It has been naturalised in the vicinity of Penzance.] 



2. P. alpina, Linn. (fig. 665 J. Alpine B. Generally a smaller plant 

 than P. vulgaris, with much smaller flowers, of a pale yellow or slightly 

 purplish colour. 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 

 north Asia. In Britain it has only been found in Skye and Koss-shire. 

 Fl. early summer. 



3. P. lusitanica, Linn. (fig. 666), Pale . Leaves of P. vulgaris, 

 but smaller. Peduncles very slender, with a pale yellow flower, tinged 

 with lilac, still smaller than in P. alpina ; the spur always much curved, 

 rather larger in proportion than in P. alpina, but much shorter than in 

 P. vulgaris ; the lips of the corolla nearly equal in length, and the lobes 

 of the lower one almost equal in breadth. Capsule globular. 



A west European plant, common in the bogs of Portugal and western 

 Spain, and France, and extending to Ireland, the south and south-west 

 of England, and west of Scotland. Fl. all summer. 



II. UTRICULARIA. BLADDERWORT. 



Some exotic species are marsh plants, either leafless or with entire 

 radical leaves and 1 -flowered peduncles ; the European ones are aU 

 floating plants, without real roots at the time of flowering, but with 

 long, root-like capillary branches or rootstocks, all submerged ; their 

 leaves divided into short capillary segments, interspersed with little 

 bladders or vesicles, full of air. Flowers in the terminal raceme, on a 



