Murrill: Amanitas of Eastern North America 
79 
and limits of variation, as well as some of the causes that have 
operated to produce the forms as we now know them. 
Doubtful Species 
This list includes species that have not been sufficiently studied 
by the writer, or species imperfectly known by mycologists 
generally. 
Amanita abrnpta Peck, Bull. Torrey Club 24: 138. 1897. 
Known only from specimens collected by Underwood and Baker 
in woods near Auburn, Alabama. It is near Venenariiis solitarius, 
but the slender stipe terminated below by a large subglobose bulb 
distinguishes it from the forms of that species with which I am 
familiar. It is very desirable that fresh specimens be obtained 
and color sketches or photographs be made from them for com- 
parison with V. solitarius and V . cothurnatus. 
Amanita elliptosperrna Atk. Ann. Myc. 7: 336. 1909. De- 
scribed from Chapel Hill, North Carolina. Resembling white 
forms of V enenarius phalloides, but said to have ellipsoid spores. 
The dried specimens are similar to those of Amanita verna. 
Amanita elongata Peck, Bull. N. Y. State Mus. 131 : 33. 1909. 
Described from specimens collected by Sterling in Pennsylvania, 
July, 1907, on damp grassy ground in the borders of woods. Re- 
sembling Vaginata albocreata, but having a well-developed annu- 
lus. From yellow forms of V enenarius phalloides, it differs in 
its very long, slender stipe and the absence of a free limb to the 
volva. In color and general appearance, except the long stipe, it 
greatly resembles V enenarius Frostianus. Further field studies 
are highly desirable. 
Amanita flavorubens B. & Mont. Syll. Crypt. 96. 1856. De- 
scribed from Columbus, Ohio, and reported also from West Vir- 
ginia. Very near V enenarius rubens. 
Amanita glabriceps Peck, Bull. N. Y. State Mus. 131 : 18. pi. U. 
1909. Described from Coopers Plains, New York, and known 
also from one other locality in the state. Pileus white or yel- 
lowish-white, often striate on the margin ; stipe long, glabrous or 
floccose-squamulose, bulbous ; volva circumscissile, slightly margi- 
nate; spores globose, Sfi. Dr. Peck states that this species is 
closely related to V enenarius phalloides. 
