1 



236 Harper : Some plants from Georgia 



pal leaves floating, never erect, from N. variegata * in its terete 

 petioles, from N. sagittifolia in the shape of its leaf-blades, and 

 from N. orbiculata in habitat, smaller size of all its parts, and ab- 

 sence of silvery pubescence on the submerged portions. 



The new species is undoubtedly the commonest representative 

 of the genus in South Georgia, where only two other species are 

 known, namely, N. orbiculata in some of the large ponds in the 

 southern tier of counties, and an apparently undescribed species 

 with red-bordered fruit in Long Pond, Lowndes County. f In Middle 

 and Northwest Georgia I have seen only TV. advena, and that only 



two or three times. 



This genus presents a very interesting problem in geographical 

 distribution. In eastern North America the species with floating 

 leaves seem to be confined to the glaciated region and coastal 

 plain, and the only one known in the Metamorphic and Palae- 

 ozoic regions is N. advcna, with erect leaves. % This is of course 

 largely due to the scarcity of permanent ponds in the older regions, 

 but just why there should be no floating-leaved species in the 

 streams of these regions is not clear. 



Sarracenia minor x psittacina 



In September, 1902, I found in moist pine-barrens near Oka- 

 pilco Creek, in the center of Colquitt County, several specimens 

 of an unfamiliar Sarracenia which appeared exactly intermediate 

 between S. minor Walt, and 6\ psittacina Michx., both of which were 

 growing not far away. It was not abundant enough to collect, 

 however, and some attempts to photograph it turned out badly. 

 So in August, 1903, I revisited the spot, only to find the creek 

 swollen by recent rains, the desired specimens all underwater, and 

 collecting out of question. 



No further light on the subject was received until May 16, 

 1904, when I was agreeably surprised to find the same thing in 

 Douglas, within a few feet of the specimens of 5. flava X minor 



*See Miller, Proc. Biol. Soc. Wash. 15 : 11-13./. *•&• 2 - 1 9° 2 - 



f See Bull. Torrey Club 31 : 15. 1904. 



J See in this connection Mr. Miller's paper just cited, also Rhodora 7 : 69-80. 

 1905. Mr. Miller noted a marked difference in the ranges of the two plants he was dis- 

 cussing, and attempted to correlate them with temperature zones. 



