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 (S t o m o i s i a c o r n u t a (MichaiLx) 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, S t o m o i s i a c o r- 

 n u t a and U t r i c u 1 a r i a intermedia, the other species may be 

 identified by means of the following key. 



Calyx inclosing the fmit; bracts at the base of the ]jedicels accompanied by a pair of 

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

 Corolla much exceeding the cal\-x (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 S t o m o i s i a c o r n u t a 



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



long or less S t o m o i s i a j u n c e a 



Corolla shorter than or about equaling the cah-x Stomoisia v i r g a t u 1 a 



Calyx not inclosing the fmit ; 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) 



V e s i c u 1 i n a purpurea 

 Lateral lobes of lower lii.i of corolla not saccate; branches alternate or none 



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



Lecticula Barnhart ) L e c t i c u 1 a r e s u p i n a t a 



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

 Bamhart) 

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



long; spur conic S e t i s c a p e 1 1 a s u b u 1 a t a 



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

 an inch broad or less Setiscapella cleistogama 



