short veil hidden under the pileus, or slightly protruding, others a 

 very conspicuous, long veil. The gleba covers the outer surface of 

 the pileus. In a few species this pileus is even, or relatively smooth ; 

 others reticulate, or ridged. Usually the pileus has an apical collar 

 that is entire or perforate, sometimes in the same species. Some 

 species are devoid of this apical collar, and one, Phallus subtilis, has 

 been erected into a genus principally on this account. We would 

 divide the species into two sections, as Professor Fischer does, though 

 we would not designate these sections by distinct generic names. We 

 think the old name Phallus should cover them both. 



Section i, Veil short or merely rudimentary. Section 2, Witfr 

 distinct veils. Each section is also subdivided on the character, 

 whether the pileus is relatively smooth and even, or is reticulate with 

 ridges. 



SECTION I. VEIL SHORT OR MERELY RUDIMENTARY. 

 PILEUS STRONGLY RETICULATE. 



PHALLUS IMPUDICUS (Fig. i). It seems to me to be use- 

 less to use any space in describing Phallus impudicus. It is such a 

 well-known plant, even to every peasant in Europe, and, besides, our 

 photograph is the best description. The stem is white and the pileus 

 has strong reticulations, not shown in our photograph where they are 

 covered with the gleba. Phallus impudicus is the original phalloid, and 

 the most common one of Europe. It extends throughout Europe. In 

 the United States we do not have the type form of Europe, but a 

 pinkish variety known as Phallus imperialis. In Japan, Phallus im- 

 pudicus (the type form I judge from the drawings I have seen) is 

 common. In Australia it is rare, if it occurs at all. Only one col- 

 lection is known, now at Kew, which does not accord exactly with 

 the European plant, but is close to it. Phallus impudicus probably 

 occurs in other countries, but the above are all that are surely known. 



Forms. 



PHALLUS IMPERIALIS. This form differs from the type form only in 

 having a pink volva and in its distribution. I am told that in France it has 

 a different habitat, and a different odor. I can not vouch for that. At any 

 rate it is a rare plant in Europe, widely distributed but infrequent. In the 

 United States it is the only form of Phallus impudicus we have. It is common 

 in the West Colorado, Southern California, and Texas. East of the Missis- 

 sippi, I know of but one station, Washington, D. C. From its distribution it 

 is evidently a plant that favors a warm climate and a sandy soil. 



PHALLUS COSTATUS (Fig. 2). This species, which was described from 

 Java, is evidently similar to Phallus impudicus, and seems to me is better con- 

 sidered as a form. It differs chiefly in having more pronounced, almost winged 

 reticulations to the pileus, and the substance of the pileus is described as 

 yellowish-white. 



PHALLUS TENUIS (Fig. 3). A small yellow-species, native 

 of the Orient. It can easily be known from all others of the section 

 by its yellow color, both of stipe and pileus, and in addition by its 



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