256 NEW YORK STATE MUSEUM 



flowers. Nearly all of them are aquatic, but two or three are found 

 growing in moist or wet sand. 



One of the most conspicuous and beautiful of the Bladderworts is the 

 Horned Bladderwort (Stomoisia cornuta (Michaux) Rafinesque), 

 figure XXIX, frequent in bogs and on sandy shores. Unlike most other 

 species of the group, it possesses only a few inconspicuous and delicate 

 leaves at the base of the scape; the latter, however, is conspicuously 

 brownish, 2 to 13 inches high, bearing one to five bright yellow, fragrant 

 flowers; the lower lip of the flower is nearly two- thirds of an inch long, with 

 a conspicuous hoodlike palate, the spur often one-half of an inch long and 

 pendulous beneath the flower. 



In addition to the two species illustrated here, Stomoisia cor- 

 nuta and Utricularia intermedia, the other species may be 

 identified by means of the following key. 



Calyx inclosing the fruit; bracts at the base of the pedicels accompanied by a pair of 

 bfactlets; plants terrestrial, rooting in sand beneath shallow water or on wet shores 

 Corolla much exceeding the calyx (genus Stomoisia Rafinesque) 



Lower lip of corolla one-half to two-thirds of an inch long; spur one-fourth to 



one-half of an inch long Stomoisia cornuta 



Lower lip of corolla one- third of an inch long; spur about one-third of an inch 



long or less Stomoisia juncea 



Corolla shorter than or about equaling the calyx Stomoisia virgatula 



Calyx not inclosing the fruit; bracts at the base of the pedicels without bractlets 



Lateral lobes of the lower lip of corolla saccate, branches verticillate and verticillately 



or oppositely decompound ; corolla red-purple (genus Vesiculina Rafinesque) 



Vesiculina purpurea 

 Lateral lobes of lower lip of corolla not saccate; branches alternate or none 



Bract solitary, tubular, surrounding the scape; scales none; flowers purple (genus 



Lecticula Barnhart) Lecticularesupinata 



Bracts and scales peltate; plants terrestrial in wet sand (genus Setiscapella 



Barnhart) 

 Corolla yellow, lower lip conspicuous, one-eighth to one-third of an inch 



long ; spur conic Setiscapella subulata 



Corolla white or purplish, both lips minute; flowers about one-sixteenth of 

 an inch broad or less Setiscapella cleistogama 



