May 1904] 
Variability of Dictyophora 
101 
Finally Hazslinski (Mag. Szab. Disc. 220) gives the spores of 
what he took to be Pezicula crataegi Fckl. as 22-24 x This 
in turn cannot be our plant. The species described above is a 
true Dermatea. 
Dermatea puberula Durand n. sp. — Erumpent, usually 
forming elongated rows or patches bursting through clinks in the 
bark, sometimes 2-3 cm. long. Ascomata .75-1 mm. in diameter, 
2 to many arising from a common stroma, whole plant cinereous, 
externally pulverulent with short hairs which give rise to cylind- 
rical-clavate, hyaline, straight or curved, 1-celled conidia, 30 x 6ju. 
Asci clavate, apex rounded or usually truncate, pore violet with 
iodine, 150 x 12/x. Spores 8, obliquely uniseriate, hyaline, 
smooth, continuous, elliptical, 15-20 x g-io/x. Paraphyses filiform, 
hyaline. 
On dead stem of Vitis sp. hanging from a tree, Fall Creek, 
Ithaca, N. Y., January 13, 1898. E. J. Durand (Herb. Cornell 
no. 15096). 
The plants are for the most part immature, only a few asci 
with spores being found. There are indications that the spores 
may become 1-3-septate at maturity. If so the plant would be a 
Dermatella, but different from D. viticola E. & E. The external 
hairs are not more than 10-15^. long. 
Botanical Department, Cornell University. 
VARIABILITY IN OUR COMMON SPECIES OF 
DICTYOPHORA. 
A. H. CHRISTMAN. 
Considerable uncertainty has existed as to the identification 
of our common species of Dictyophora. Fischer 1 remarks that 
nowhere among the Phalloideae is the confusion in the nomen¬ 
clature so great as in the case of this genus and he believes that 
this confusion has been brought about by the naming of isolated 
specimens which have been given new specific names on the 
ground of some slight lack of agreement with descriptions al¬ 
ready given. 
Bose 2 , in 1811, was perhaps the first to report this fungus 
from America. He collected specimens in South Carolina and 
referred them to the genus Phallus with the specific name dupli- 
catus Base. 
Schweinitz 3 reported Phallus duplicatus Bose and Phallus 
1 Unterschungen zur vergleichenden Entwickelungsgeschichte und 
systematik der Phalloideen. Ed. Fischer,—Denk. der Schweiz. Nat. 
Gesell., Bd. XXXI, 1 1. 1890. 
2 Phallus duplicatus Bose. Bose,— Gesell. Nat. Freunde zu Berlin, 
Vol. V, p. 86. Pit. VI, Fig 7. 
8 Synopsis of North American Fungi, Schweinitz,—Trans, of Ameri¬ 
can Phil. Soc., Vol 4, p. 252. 1881. 
