72 



(D.) 



NOTES AND OBSERVATIONS 



THALICTRUM PURPURASCENS, L. 



A singular Thalictrum was found on the shore of Lake Champlain, 

 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 dioecious, 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 

 T. purpurascens, except the leaves, which resembled more those of 

 T. 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. dioicum and 

 T. purpurascens, or a variety of the latter, or a distinct species, 

 is a question to be solved. Similar forms have been regarded by 

 Professor Trelease as hybrids. 



NASTURTIUM LACUSTRE, Gr. 



Black creek, near Bergen. 



ARABIS DRUMMONDII, 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 fonn 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 Rihes rotundijolium, R. lacustre 

 and R. prostratum. All were in flower at the same time. The 

 last species occurs abundantly at Lower Ausable pond, where 



