202 



Eragrostis Purshii, Schrad. 



An adventive at East Buffalo, 1S82. 



LOLIUM TEMUXENTUM, L. 



Near Buffalo, but very rare. Clinton. 



HORDEUM JUBATUM, L. 



Becoming plentiful at East Buffalo, 1SS2. 



Phalaris arundinacea, L. 



The striped variety native at Hamburgh, Erie Co. 



Panicum agrostoides, Spreng. 



An adventive at East Buffalo, 1SS2. 



Paxicum proliferum, Lam. 



An adventive at East Buffalo, 1SS2. 



Cenchrus triduloides, L. 



This unwelcome grass, within a very short time, has become 

 thoroughly established along the track of the Niagara Falls 

 Railroad, near the foot of York Street, in this city, as well 

 as at East Buffalo, and Ft. Erie, Ont. 



Lecanora muralis, (Schreb.) Schaer. 



The varieties, parella, Fr., and rosella, Tuck., omitted by 

 inadvertence. 



CORRECTIONS. 



For Cerastium boreale, (p. 70, 1. 6,) read Stellaria borealis. 

 7. Anemone Hepatica, L. Change "Genesee" to "Wyoming." 

 15. Ranunculus alismaefolius, Geyer. Change specific name and that of its 



author to " ambigens, Watson." 

 27. Trollius laxus, Salisb. Change " Genesee" to " Wyoming." 

 68. Cardamine rotundifolia, Michx. Prof. Watson, in transferring this 

 name to the plant, which Torrey called C. rhomboidea, DC, var. 

 purpurea, seems to have fallen into an error. (See Gray's note in the 

 Botanical Gazette, Vol. 4, p. 210). But that the plant itself is entitled to 

 specific rank admits, in our opinion, of little doubt. 

 71. Cardamine hirsuta, L., var. sylvatica. Add " Gray " as the authority for 



the variety. 

 85. Brassica NIGRA, Gray. Substitute " Koch " for " Gray." 

 92. Tm.Asi'i ARVENSIS, L.. Change " arvensis " to "arvense." 



For "Order ii. Cai'Saridace.e " read "Order ii. Caitaridace.-e." 

 123. DlANTHUS ARMERIA. Add " L" to denote the authority. 



