barnhart: genera in lentibulariaceae 6i 



Antherae subglobosae. Capsula globosa. Semina plus minus 

 peltata, margine alata vel non alata. 

 Species typica, Utricidaria vulgaris L. 



In the present revision about 75 species are left in Utricularia, 

 and the genus as here defined is of world-wide distribution, one or 

 more species being found in almost every region where quiet fresh- 

 water conditions occur, except in certain oceanic islands. Six or 

 eight subgenera might be distinguished, and some of these even- 



22. Utricularia. U. hydrocarpa Vahl. a. Plant, half natural size. b. Flower, 

 with bract, X 3-2. c. Fruit, X 3|. 



23. Utricularia. U. inflata Walt. Plant, one fourth natural size. 



24. Vesiculina subg. Hydrion. V. cucullata (St. Hil.) Barnh. a. Plant, half 

 natural size. b. Corolla, X 2*. c. Bladder, X 8. 



tually will deserve recognition as genera. The most noteworthy, 

 perhaps, is Akentra Benj., with two species, one in tropical America, 

 the other in tropical Africa; it is not spurless, as supposed by the 

 author of the name, but enough is known of it to show the incon- 

 gruity of its position in Utricularia. The other ampulla-bearing 

 species represent several good subgenera, if not genera; and the 

 long-styled, red-flowered species of tropical America may deserve 

 generic recognition. But the treatment of these groups is deferred 

 until another time. 



