548 THE PINGUICULA FAMILY. 



XLIV. PINGUICULA FAMILY. LENTIBULACE^l. 



Marsh or aquatic plants, with radical or floating leaves (or 

 sometimes none), and very irregular flowers, either solitary or 

 several in a raceme, on leafless, radical or terminal peduncles. 

 Calyx variously divided. Corolla 2-lipped, projecting at the base 

 into a pouch or spur. Stamens 2. Ovary and capsule 1-celled, 

 with several seeds attached to a central placenta. 



A family of very few genera, dispersed over the greater part of the 

 globe. Their spurred flowers have a general resemblance to those of 

 Linaria in the Scrojpkularia family, next to which they might perhaps 

 be better placed, although the ovary and capsule are those of the 

 Primrose family, with which botanists more generally associate them. 



Calyx 4- or 5-lobed. Leaves entire, radical . . . . 1. Butterwobt. 

 Calyx 2-lobed. Leaves floating, much divided ... 2. Bladdeewoet. 



I. BUTTERWORT. PINGUICULA. 



Plants growing in bogs or on wet rocks, with radical, entire leaves, 

 and yellow or purple flowers, on leafless radical peduncles. Calyx with 

 4 or 5 teeth or lobes, arranged in two lips. Corolla spurred, with a 

 broad, open mouth ; the upper lip short, broad, and 2-lobed ; the lower 

 one usually longer, broadly 3-lobed. Capsule opening in 2 or 4 valves. 



The genus is limited to the northern hemisphere. 



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



nearly straight 1. Common B, 



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 longer than the others. Upper lip 



short 2. Alpine B. 



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



il, and scarcely longer than the upper lip .... 3. Pale B. 



1. Common Butterwort. Pinguicula vulgaris, Linn. 



(Fig. 656.) 



(Eng. Bot. t. 70.) 



Leaves spreading, ovate or broadly oblong, of a light green, some- 

 what 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 j the broad, campanulate 





