This section is from the book "Studies of American Fungi: Mushrooms, Edible, Poisonous, Etc.", by George Francis Atkinson. Also available from Amazon: Studies of American Fungi: Mushrooms, Edible, Poisonous, Etc..
The genus Eccilia corresponds with Ompbalia of the white-spored agarics. The stem is cartilaginous, hollow or stuffed. The pileus is thin and somewhat membranaceous, plane or depressed at the center, and the margin at first incurved. The gills are more or less decur-rent.
This plant occurs on the ground in woods. I t is 6-10cm. high, the cap 2-4 cm. broad, and the stem is 3-4 mm. in thickness.
The pileus is convex and umbilcate, somewhat membranaceous, smooth, watery in appearance, finely striate on the margin, hair brown to olive in color. The gills are decurrent. In the specimens illustrated in Fig. 143 the gills are very irregular and many of them appear sinuate. The spores are strongly 4-5 angled, some of them square, 10-12 µ in diameter, with a prominent mucro at one angle. The stem is cartilaginous, becoming hollow, lighter in color than the pileus, and somewhat enlarged below. Figure 143 is from plants (No. 3999, C. U. herbarium) collected at Blowing Rock, N. C, during September, 1899.
Eccilia polita. Cap hair brown to olive, stem lighter, gills flesh color, notched and irregular (natural size). Copyright.
Plate 45, Figure 144
Claudopus nidulans, view of under side. Cap rich yellow or buff, gills flesh color (natural size).