SAGITTARIA HETHROPHYLLA IN DEVON O77 
Schweigger & Kérte, Fl. Erlang. ii. p. 119 (1811), which has been 
reduced to S. Asha lia L. — ragera thd Bolle; and S. hetero- 
grown i 
the still water of f the Oswego River, near the great falls, where 
the river was more than seven feet in depth ; it had narrowly 
lanceolate and rigid leaves narrowed at each end, strong and 
sated G. Smith, in — work quoted above, thus remarks on 
the species :—‘ Specimens differ greatly in size and form of leaf, 
differences dipending | lntgély on the habitat of the plant. When 
growing in deep poe or running s ey the petioles become 
growing in dling ee or in simply muddy places, the petioles are 
weaker, and the blade elliptical ovate and usually smaller, and the 
cane erect or rat ane This form i is the S. peta doa cot Mee hs - 
llect 
rs. 
plates with li ar elliptical oblong ree are the S. “heterophylla 
e southern li S 
e plants are usually o of ranker grow th, with larger more often 
hastately lobed leaves. In all these conditions there is much 
Ped 
to mark distinct forms or varieties. 
ur specimens do not accord well with the type of a species 
Sagittaria heterophylla Pursh, nor precisely with any of the 
varieties mentioned in the syn onymy above ee ; ee may 
Var. IsCANA; dicecia vel monceca rigida, foliis ovalibus roti a 
rimis hiss hastatis apice obtuse contractis basi in maturita’ 
rotundis, petiolo firmo fragili. 
were obtained by means oa an Sak Sener one-eighth aid a 
if 
Towards the results I have been assisted by Mr. F. R. Broken- 
shire, of Exeter, who kindly placed his instrument, appliances, 
and experience at my disposal for the purpose 
