26* XVIII. 



common in the upland woods. — C porcina, Nutt. ; common 

 everywhere. — C. amara, Nutt. ; not frequent in our swamps. 

 Capttlievek^e. 



Quercus alba, L. ; common. — Q. bicolor, Willd. ; common. — Q. 

 Prinus, L. ; scarce on southern part of Stissing Mt. ; Var. monti- 

 cola, Michx. ; common on Stissing Mt. and the upland woods. — 

 Q. prinoides, Willd. ; abundant on Stissing Mt., Mill Hill, etc. 

 — Q. ilicifolia, Wang. ; common. — Q. coccinea, Wang. ; com- 

 mon ; Var. tinctoria; not scarce. — Q. rubra, L. ; common. — Q. 

 palustris, Du Roi ; not very frequent. 



Castanea vesca, L. ; very common. 



Fagus ferruginea, Ait. ; common. 



Corylus Americana, Walt. ; common. — C. rostrata, Ait. ; common 

 on Mountain, and borders of rocky woods. 



Ostrya Virginica, Willd. ; common. 



Carpinus Americana, Michx. ; very common. 



Myricaceje. 



Myrica Gale, L. ; rather tincommon ; along Wappinger's Creek, 

 Husted and Sackett marshes ; abundant around Grass Pond 

 on Mountain. 



Comptonia asplenifolia, Ait. ; common. 



Betulace.e. 



Betula lenta, L. ; common. — B. lutea, Michx., f. ; quite common ; 

 abundant in many of the moist woods, and particularly in the 

 deep ravines of the Mountain. — B. alba, Var. populifolia, 

 Spach. ; very common. — B. papyracea, Ait ; decidedly com- 

 mon; the prevailing White Birch on Stissing Mt., and on many of 

 our other high cold hills. — B. nigra, L. ; not frequent ; along one 

 or two of our large creeks ; Roelif Jansen's Kill. — B. pumila, 

 L. ; marsh west of Croghan Hill ; Wappinger's marshes ; 

 marsh along R. R. track, N. E. of Leander Smith's place ; 

 Marshall's Cranberry Marsh, on Carpenter Hill, etc. This rare 

 species is very abundant in the great marshes and bogs about 

 Pine Plains, and its haunts, or habitats, are usually those of 

 Valeriana si/loatica, Lobelia Kalmii, Cypripedium spectabile, 

 etc. Like Valeriana sylvalica of these marshes, it here gen- 

 erally assumes a very luxuriant form, frequently growing to 

 the height of 12 to 15 ft., but averaging usually from 6 to 10 ft. 



Alnus incana, Willd.; common; abundant along our ponds, 

 streams and in our cold swamps. — A. serrulata, Ait. ; rather 

 more common than preceding ; the two species are very easily 

 distinguished from each other, even after the leaves have fallen, 

 by the different appearance of their bark. 

 Salicace^e. 



Salix Candida, Willd. ; abundant in all the bogs and marshes in 

 which Valeriana is found. — S. humilis, Marshall ; common in 

 all our dry woods. — S. discolor, Muhl. ; common. — S. sericea, 

 Marshall ; quite common ; along sandy banks of Trout Brook. 

 Shekomeko Creek, etc. — S. cordata, Muhl.; common. — S. livida, 

 Wahl., Var. occidentalis, Gray ; rather common. — S. lucida, 

 Muhl. ; common along- the creeks and smaller streams. — S.- 



