72 [ AssEMBLY, 
(D-) 
NOTES AND OBSERVATIONS, 
THALICTRUM PURPURASCENS, L. 
A singular Thalictrum was found on the shore of Lake Cham- 
plain, near Port Henry. Its leaves were thin and delicate, quite 
small, and five to seven-lobed, resembling those of Thalictrum 
dioicum. Some had a general petiole, others had none. The 
flowers were almost dicecious, the anthers resembling those of 
Thalictrum purpurascens, though perhaps they were a little more 
slender and more strongly mucronate. The plants had the general 
aspect of 7. purpurascens, except the leaves, which resembled 
more those of 7. dioicum. T. dioicum in the same locality was past 
flowering, it being now the middle of June, and had developed its 
fruit to full size. Whether this plant is a hybrid between 
T. didicum and T. purpurascens, or a variety of the latter, or a 
distinct species, is the question to be solved. Similar forms have 
been regarded by Prof. Trelease as hybrids. 
NASTURTIUM LACUSTRE, Gr. 
Black creek, near Bergen. 
ARABIS DRUMMONDIYI, Gr. 
Port Henry. A form with spreading pods. 
GEUM RIVALE, L. 
A form with pale yellow or cream-colored flowers was collected 
in the Adirondack mountains. It is not rare in that locality. 
‘RIBES CYNOSBATI, L. 
A very lax form of this plant occurs at Cascadeville, in the 
Adirondack mountains. The branches are long and slender, and 
the flowers are much scattered and very long pedicelled. It is. 
associated in this locality with Ribes rotundifolium, R. lacustre 
and J. prostratum. All were in flower at the same time. The 
last species occurs abundantly at Lower Ausable pond, where 
