28 NEW YORK STATE MUSEUM 



vatae, flexuosae hamatacve, hyalinae, 16-25 x 1-1.5 /^, secundum, 

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

 [i, 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 perfoliatus 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 z^. 



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- 

 f ertae, adnexae, atrobrunneae, acie albidae ; stipes firmus, rigidus, 

 aequalis, medulla alba farctus, sericeo-fibrillosus, albidus ; sporae 

 purpureo-brunneae vel subatrae, ellipsoideae, 10-12 x 6-8 p-. 



Puccinia epiphylla (L.) Wettst. 



Living leaves of low spear grass, P 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 v u 1 g a r e Lam., the common 

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

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



