=Clavaria pistillaris= Linn. =Edible.=--This plant is a characteristic one because of its usually large size and simple form. It is merely a club-shaped body, growing from the ground. It has a wide range, both in Europe and North America, but does not seem to be common, though I have found it more common in the mountain woods of North Carolina than in New York. The plant is 5--20 cm. high, and 1--3 cm. thick at the upper end. It is smooth, though often irregularly grooved and furrowed, due probably to unequal tensions in growth. The apex in typical specimens is rounded and blunt. It is dull white or tan color or rufescent. The flesh is white, and very spongy, especially in age, when it is apt to be irregularly fistulose. Figure 203 is from plants collected at Blowing Rock, N. C., during September 1899. There is what seems to be an abnormal form of this species figured by Schaeffer, Table 290, which Fries separated as a distinct species and placed in the genus _Craterellus_, one of the _Thelephoraceæ_, and called by him _Craterellus pistillaris_. This plant has been found at Ithaca, and the only difference between this and the _Clavaria pistillaris_ L., seems to be in the fact that in _Craterellus pistillaris_ the end is truncate or in some specimens more or less concave. The spores seem to be the same, and the color and general habit of the two plants are the same. It is probably only a form of _Clavaria pistillaris_. =Clavaria mucida= Pers.--This is one of the smallest species of the genus _Clavaria_. It grows on rotten wood, and appears throughout the year. It is usually simple and clavate, but sometimes branched. The plant is white, or yellowish, or sometimes rose color, and measures from 0.5 to 2 cm. in height, though I have usually found it from 0.5--1 cm. in height. It is soft and watery. Figure 204 is from plants (No. 4998, C. U. herbarium) collected at Ithaca in October, 1899. CHAPTER XII. THE TREMBLING FUNGI: TREMELLINEAE. These fungi are called the trembling fungi because of their gelatinous consistency. The colors vary from white, yellow, orange, reddish, brownish, etc., and the form is various, often very irregular, leaf-like, or strongly folded and uneven. They are when fresh usually very soft, clammy to the touch, and yielding like a mass of gelatine. They usually grow on wood, but some species grow on the ground, and some are parasitic. The fruit surface usually covers the entire outer surface of the plant, but in some it is confined to one side of the plant. The basidia are peculiar to the order, are deeply seated in the substance of the plant, rounded or globose, and divided into four cells in a cruciate manner. From each one of these cells of the basidium a long, slender process (sterigma) grows out to the surface of the plant and bears the spore. A few species only are treated of here. TREMELLA Dill.