— 41 — 

 Order 90. BETULACE^E. 



383. BETULA, Tourn. 



844. lenta, L. 



845. leutea, Michx. f. Mt. Carmel, etc. 



846. alba, var. populifolia, Spach. 



847. papyracea, Ait. Maltby Park, Wallingford ; Wading River, L. I., etc. : 



rare. 



384. ALNUS, Tourn. 



848. serrulata, Ait. 



Order 91. SALICACE^E. 



385. SALIX, Tourn. 



849. tristis, Ait. Common on Long Island, etc. 



850. humilis, Marshall. Farming-ton, Miss Willard; New Haven, Patton. 



851. discolor, Muhl. New Haven, etc. Northville, L. L, H. W. Young. 



852. sericea, Marshall. 



853. cordata, Muhl. 



854. livida, Wahl., var. occidentalis, Gray. Farmington, Miss Willard; New 



Haven, Patton. 



855. lucida, Muhl. 



856. nigra, Marsh. Wading River, L. I. 



857. fragilis, L. Westville, Patton. 



858. alba, L. 



859. Babylonica, Tourn. 



860. myrtilloides, L. Beaver Meadows, Eaton. 



386. POPULUS, Tourn. 



861. tremuloides, Michx. 



862. grandidentata, Michx. 



863. monilifera, Ait. Middletown, Miss F. M. ffazen. 



864. heterophylla, L. Northville, L. I., H. W. Young. 



865. balsamifera, L., var. candicans, Gray. 



866. alba, L. 



