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ORDER 88. BETULACEA. 
387.. BETULA, Tourn. 
- desta. i. 
. lutea, Michx. f. 
. Ppapyracea, Ait. 
Rather rare. Goat Is., Niugara Falls; Youngstown, Niagara Co. 
. pumila, L. 
Very rare. Tonawanda Swamp, Dr. C. A/. Booth. 
3838. ANUS, Tourn. 
. incana, Willd. 
. serrulata, Ait. 
Very rare. <A few specimens on Squaw Is., Niagara R. 
ORDER 89. SALICACE#. 
389. SALIX, Tourn. 
. candida, Willd. 
Rare. Bergen, Gen. Co.; Caledonia, Liv. Co., C/ixéon. 
. traistis, Ait, ? 
. humilis, Marshall. 
. discolor, Muhl. 
sericea, Marshall. 
. petiolaris, Smith. 
. purpurea, L. 
. cordata, Muhl. 
. livida, Wahl., var. occidentalis, Gray. - 
. lucida, Muhl. 
. nigra, Marsh. 
Squaw Is., Niagara R., and elsewhere. | 
. FRAGILIS, L. 
[CABAL 
. longifolia, Muhl. ? 
Rare. Pt. Abino, Ont. 
. myrtilloides, L. 
Rare. Near Akron, Erie Co. 
390. POPULUS, Tourn. 
. ALBA i. 
In cultivation, and spreading by the root. 
. tremuloides, Michx. 
