112 Forty-second Annual Report on the 



Physalis Peruviana, L. 



Manor, Long Island. August. Spontaneous in gardens. 



Q,uercus heterophylla, Mx. 



Tottenville, Staten Island. A. Hollick. 



Q,uercus Rudkini, Britton. 

 With the preceding. Hollick. The observations of Mr. Hollick 

 upon these two oaks and their environment on Staten Island lead him 

 to the conclusion that they are probably hybrid forms. 



Sparganium affine, Schn. 

 Adirondack mountains, North Elba, Lake Sanford, etc. In the 

 Manual this stands as a variety of S. simplex, but it is probably a good 

 species. The dwarf terrestrial form was found at Edmonds Ponds 

 and referred to S. simplex as a variety in the Thirty-fourth Report, 

 p. 55. 



Setaria verticillata, Bv. 



Along the railroad near Lansingburgh. E. G. Howe. Introduced 

 from Europe and very rare in this State. 



Apera spica-venti, Bv. 



Lansingburgh. Eov:e. This is Agrostis spica-venti L. It also has 

 been introduced from Europe and is not common. 



Equisetum litorale, Kuhl. 

 Oneida lake, near the mouth of Fish creek. Covxlle. 



Lepiota augustana, Britz. 

 Groves or borders of woods. Meadowdale, Albany county. July. 

 This scarcely differs from L. cristata except in the shape of the spores, 

 and it has generally been referred to that species. 



Tricholoma imbricatum, Fr. 



In groves of spruce and balsam trees, Abies niqra and Abies balsamea. 

 North Elba, Essex county. Sept. Edible. 



Tricholoma subacutum, n. sp. 



[Plate 1. Figs. 1-5], 



Pileus at first ovate or broadly conical, then convex and subacutely 

 umbonate, dry, silky and obscurely virgate with minute innate fibrils, 

 whitish tinged with smoky-brown or bluish-gray, darker on the umbo, 

 flesh white, taste acrid or peppery ; lamellae rather close, slightly 



