332 LENTIBULARIACEAE. 



Orobanche grayana Beck. (0. comosa Hook.) Stems stout, very short; 

 flowers in a dense simple or branched corymb, all pedicelled; calyx-lobes 

 narrow; corolla purplish; anthers woolly. 



Parasitic on Grindelia; rare, in our limits known from Vancouver Island, 

 British Columbia, and Whidby Island, Sucia Island, and Flattop Island, 

 Washington. 



Orobanche ludoviciana Nutt. Whole plant reddish-yellow, viscid-pu- 

 bescent; stem stout, erect, simple or with erect branches, scaly, 15-25 cm. long; 

 flowers 2-bracted at the base of the calyx, in dense spikes, looser below; calyx 

 unequally 5-cleft, the lobes linear-lanceolate; corolla yellowish, 12-15 mm. 

 long, the lobes acute, hardly spreading. 



Parasitic on Composite plants; known in our limits from Victoria, British 

 Columbia, Macoun; Fort Vancouver, Washington, Douglas. 



Family 92. LENTIBULARIACEAE. Bladderwort Family. 



Small aquatic herbs with 1 -few-flowered scapes; calyx 2- 

 lipped; corolla deeply 2-lipped, the lower lip larger, 3-lobed and 

 with a prominent usually bearded palate, spurred at the base in 

 front; stamens 2, with confluently 1 -celled anthers; style very 

 short or none; stigma 1-2-lipped; ovary free, 1-celled, with a 

 free central placenta ; capsule often bursting irregularly. 



Leaves entire; plant terrestrial. 463. Pinguicula, 332. 



Leaves dissected; plant aquatic. 464. Utricularia, 332. 



463. PINGUICULA. Butterwort. 



Small stemless perennial herbs growing on damp rocks; leaves 

 broad, entire, soft-fleshy, mostly greasy to the touch; flower 

 solitary on a scape; upper lip of the calyx 3-cleft, the lower 

 2-cleft; corolla with an open hairy or spotted palate, the lobes 

 spreading. 



Pinguicula vulgaris L. Leaves elliptic or ovate, obtuse, 2-5 cm. long, 

 short-petioled; scape 5-12 cm. high; corolla violet, the tube conical with a 

 straight spur, the lower lip much longer than the upper. 



Moist banks and rocks in the mountains. 



464. UTRICULARIA. Bladderwort. 



Aquatic submersed plants; leaves dissected into capillary 

 segments and bearing little air-bladders which act as floats, or 

 sometimes rooting in the mud and with few or no leaves or 

 bladders; flowers on 1-few-flowered scapes; corolla bilabiate, 

 with the throat closed by a prominent palate; anthers convergent. 



Leaves 2-3 times pinnately parted, crowded; flowers large. U. vulgaris. 



Leaves 2-4 times forked, scattered; flowers small. U. minor. 



Utricularia vulgaris L. Stems rather stout, immersed, thickly crowded 

 with the finely parted pinnate leaves; corolla yellow, 12-16 mm. broad, with 

 reflexed sides; spur conical, shorter than the lower lip. 



In still ponds, not common. 



