Cambridge, Mass. On a shady lawn, in front of Prof. Kellner's house, corner of Berkeley Street and Phillips Place.
June 28, 1907
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This plant I painted for Dr. Farlow as well as for myself. He took his plate to Europe, to show to the authorities over there (Boudier, and others), and all pronounced it to represent B. vitellinus.
The gills are slightly attached, as shown on right side of sectional view, but they soon become free. In this condition one thinks of Pluteolus. The edges of the long ones are quite even, but the short ones are remarkably eroded. They peel easily, or I should say, in tearing through the margin of the cap, one generally divides a gill. The whole plant is extremely flaccid and delicate. The striae are indistinct in youth. Pileus variable in color (cf. B. variicolor Atk.), generally a dull gray-green yellow, very viscid, the fine glutinous pellicle tearing later, especially where it is spread over the striations. The central portion often covered with a dark-colored network of radiating somewhat raised reticulations, also due to the gluten. When very fresh then very slimy. This can be seen only in the early morning hours, before the sun-light shines upon the plants. Sometimes there is considerable variation in the coloring of the pileus, even in young specimens. It may be almost gray, or of a beautiful pale yellow, or again, more of a grayish-olivaceous tint.
These observations were made from specimens growing either cespitosely or ina a gregarious manner. In very young plants the margin of the pileus is peculiarly, but only slightly, flared out. At first the gills are nearly white, of a creamy shade. The stem varies considerably as to thickness, but otherwise, is constant, especially as to color and adornment. Sometimes the scales or squamules below (in fresh specimens) are very pronounced and flaring. The gills are straight when fresh, but soon become crinkled. The gill-edges are finely fimbriate under a hand-lens. Pileus at first not striate, or only indistinctly so, later on markedly so, and sulcate, the striations reaching half or two-thirds the way to the disk. The wall of the hollow stem is whitish, but its flesh, on sectioning, is yellow, as shown. Lower down, the yellow merges into white, as on the exterior.
The plants were found growing in company with Panaeolus campanulatus, P. papilionaceus, and with a small species of Clitopilus (C. cancrinus).
Louis C. C. Krieger
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The content of these records were transcribed from the original handwritten information, and although every attempt was made to do so accurately, we cannot guarantee the accuracy of the transcription or the accuracy of the original information.
Common names were obtained from the following sources:
Miller, Orson K. and David F. Farr. An index of the common fungi of North America, synonymy and common names. Vaduz [Liechtenstein]: J. Cramer, 1975. 206 p.
Lincoff, Gary. The National Audubon Society field guide to North American mushrooms. New York: Knopf: Distributed by Random House, c1998. 926 p.
Smith, Alexander H. The mushroom hunter's field guide. Ann Arbor: Univ. of Michigan Press, c1980. 316 p.