March 1906 ] Pleurotus Hollandianus Sp. Nov. 
59 
o 
PLEUROTUS HOLLANDIANUS SP. NOV. 
D. R. SUMSTINE. 
Horizontalis, imbricatus; pileo carnoso, tenui, sessili vel 
postice in stipitem brevem producto, semiorbiculari, ubique 
tomento denso tecto, albo vel luteo-albo, 1-3 cm. lat., 1-4 cm. long.; 
lamellis subdistantibus, simplicibus, inaequalibus, divergentibus, 
albidis, 1-3 mm. lat.; sporis subglobosis; cystidiis cylindraceo- 
fusoideis sursum acuminatis. P. petaloidei affinis sed forma, 
tomento pilei, latitudine lamellarum differt. Ad truncos putridos, 
Latrobe, Pennsylvania, 1903, 1904. 
The thick tomentum of the pileus readily distinguishes this 
species. The type specimens are in the Carnegie Museum, Pitts¬ 
burg, Pa. The name is given in honor of the director of the 
Carnegie Museum, Dr. W. J. Holland. 
Wilkinsburg, Pa., Feb. 12, 1906. 
NOTE ON WYNNEA AMERICANA. 
D. R. SUMSTINE. 
Mr. Jennings collected some plants at Ohio Pyle that agree 
fairly well with the description of Wynnea americana Thaxter 
(Bot. Gaz. 39:241. 1905.) There are some differences, how¬ 
ever, but not sufficient possibly to establish a new species. I 
append a description of the Ohio Pyle specimens. 
Apotheciis numerosis (3-11) in stipitem longum connatis, 
auritis, gelatino-carnosis, ad basim incisis, extus atrobrunneis, 
furfuraceo-tuberculatis, 2-8 cm. alt., 1-2 cm. lat.; stipite longo, 
solido, similiter, furfuraceo, coloratoque, radicato, supra valde 
incrassato, 3-6 cm. alt.; hymenio glabro, ochroleuco; ascis octo- 
sporis, cylindraceis longe stipitatis, iodo non tinctis; sporis 
monostichis, levibus, hyalinis, elliptico-fusiformibus, plerumque 
guttulatis; paraphysibus linearibus, vix apice incrassatis, septatis; 
ramosis. 
Hab. in terra arenosa, Ohio Pyle, Pennsylvania, Septembri, 
1905. 
Wilkinsburg, Pa. 
