LENTIBULARIACE^ 543 



lip entire, a little longer than the 3-toothed lower one, all more or less 

 ciliate : filaments woolly at base : anthers white, ciliate on the sutures : 

 style shorter than the stamens, with irregularly 2-5-lobed stigma. On 

 sandy plains near the sea, Oregon. 



ORDER LXX.LENTIBULARIACE^E Lindl. Veg. Kingd. 686, 

 PING UIC ULACE^E 



Aquatic herbs, or terrestrial in wet places, with the leaves all 

 radical, or when floating opposite or verticillate, and mostly 

 showv flowers solitary or racemose on scapes or scape -like pe- 

 duncles. Calyx inferior, 2-5-parted. Corolla bilabiate, the 

 upper lip usually erect, concave, or the sides plicate, entire or 

 2-lobed . lower lip larger, spreading or reflexed, 3-lobed, with 

 a palate projecting into the throat and a nectariferous spur 

 beneath. Stamens two : anther-cells confluent into one. Ovary 

 ovoid or globose, one-celled ovules numerous. Style short or 

 none : stigma bilamellate. Fruit a capsule, irregularly bursting 

 or dehiscent by valves. Seeds anatropous, rugose, reticulated, 

 or bristle-bearing. 



1 Utricularia Aquatic or bog plants : foliage often dissected and bladder 



bearing. 



2 Pinguicnla Terrestrial herbs : leaves all radical , in a rosulate tuft, entire. 



1 UTRICULARIA L. Sp. 18. 



Herbs floating free in water, or rooting in mud, the aquatic 

 species with stems usually bearing finely dissected leaves and 

 minute bladders : marsh species with a few bladder-bearing leaves 

 or rootlets under ground. Flowers racemose or solitary at the 

 summits of slender scapes, the pedicels two-bracteolate. Calyx 

 deeply two-lobed, the lobes equal or nearly so. Corolla bilabiate, 

 the upper lip usually erect and entire ; the lower larger, 3-lobed, 

 spurred at the base and with a prominent palate, commonly 

 bearded in the throat. Capsule many- seeded. 



U. vulgar is L. Sp, 18. Stem long and rather stout, densely leafy : 

 leaves 2-3-pinnately divided into filiform segments, very bladdery : blad- 

 ders about 2 lines long: scapes a foot or less long, 5-16 flowered : corolla 

 yellow, half inch or more broad, with sides of lips reflexed ; upper lip nearly 

 entire, hardly longer than the prominent palate ; the lower one slightly 

 3-lobed and longer than the conic, blunt or acutish somewhat curved spur. 

 Slow streams and ponds, Brit. Columbia to California and across the 

 Continent : Europe and Asia. 



U. occidentalis Gray Proc. Am. Acad. xix, 95. Stems filiform, 8-10 

 inches long: leaves scattered, repeatedly dichotomously divided, the small 

 setaceous segments a line or two long: scapes 6-10 inches high, 3-5-flower- 

 ed : corolla yellow, 4-6 lines long : upper lip a little longer than the broad 

 rounded palate; spur broadly conical, acutish, 2 lines long, ascending. 

 In shallow water on boggy meadows near the base of Mount Adams, 

 Washington. 



U. minor L. Sp. 18. Stems slender, floating, short: leaves much 

 scattered dichotomously divided, the divisions few and setaceous : bladders 

 borne among the leaves, few, often none, the largest not over a line long: 



