28 NEW YORK STATE MUSEUM 



vatae, flexuosae hamataeve, hyalinae, 16-25 x 1-1.5 /->-, secundum, 

 oblongae vel subfusiformes, hyalinae, vulgo binucleatae 8-12 x 2-3 

 /*, sporophores graciles, sporis aequales vel breviores. 



Picris echinoides L. 

 Orient Point. September. R. Latham. 



Potamogeton richardsoni (Benn.) Rydb. 

 Lake Champlain and Oneida lake. August. Formerly reported 

 as a variety of Potamogeton p e r f o 1 i a t u s L. but now 

 classed as a distinct species. 



'Psilocybe nigrella n. sp. 



PLATE III, FIG. 7-1 1 



Pileus thin, broadly convex or nearly plane, slightly umbonate, 

 hygrophanous, seal brown and shining when moist, even and ob- 

 scurely striate on the margin, raw umber or mummy brown when 

 the moisture has escaped; lamellae thin, rather close, rounded be- 

 hind, adnexed, purple brown or seal brown, whitish on the edge ; 

 stem firm, rigid, equal, stuffed with a slender white pith, silky 

 fibrillose, whitish ; spores dark purplish brown, almost black, 

 ellipsoid, 10-12 x 6-8 p-. 



Pileus 2.5-4 cm broad; stem 3.5-7 cm long, 2-4 mm thick. 



Damp mossy ground in swamps. Karner, Albany co. October. 



Pileus tenuis, late convexus subplanusve, leviter umbonatus, hygro- 

 phanous, atrobrunneus, nitidus, levis, margineque obscure striatus 

 in conditione uda, umbrinus in siccitate ; lamellae tenues, subcon- 

 fertae, adnexae, atrobrunneae, acie albidae; stipes firmus, rigidus, 

 aequalis, medulla alba f arctus, sericeo-fibrillosus, albidus ; sporae 

 purpureo-brunneae vel subatrae, ellipsoideae, 10-12 x 6-8 <>■. 



Puccinia epiphylla (L.) Wettst. 



Living leaves of low spear grass, P o a annua L. Lyndon- 

 ville. September. C. E. Fairman. 



Ribes triste albinervium (Mx.) Fern. 



Colton hill swamp. Fine. August. 



This is closely related to Ribes vulgare Lam., the common 

 garden currant, from which it may be separated by its more strag- 

 gling, partly decumbent habit and by the glands on the pedicels. 



