Читать книгу Studies of American Fungi. Mushrooms, Edible, Poisonous, etc - George Francis Atkinson - Страница 17

Table of Contents

In the genus Hypholoma the spores are purple brown, the gills attached to the stem, and the veil when ruptured clings to the margin of the cap instead of to the stem, so that a ring is not formed, or only rarely in some specimens. The stem is said to be continuous with the substance of the cap, that is, it is not easily separated from it. The genus is closely related to Agaricus (Psalliota) and Stropharia, from both of which it differs in the veil not forming a ring, but clinging to the margin of the cap. It further differs from Agaricus in the stem being continuous with the substance of the cap, while Stropharia seems to differ in this respect in different species. The plants grow both on the ground and on wood. There are several species which are edible and are very common. Peck gives a synopsis of six species in the 49th Report New York State Mus., page 61, 1896, and Morgan describes 7 species in Jour. Cinn. Soc. Nat. Hist. 6: 113–115.

Hypholoma sublateritium Schaeff. Edible, bitter sometimes. The name of this species is derived from the color of the cap, which is nearly a brick red color, sometimes tawny. The margin is lighter in color. The plants grow usually in large clusters on old stumps or frequently appearing on the ground from buried portions of stumps or from roots. There are from six to ten, or twenty or more plants in a single cluster. A single plant is from 8–12 cm. high, the cap is 5–8 cm. broad, and the stem 6–8 mm. in thickness.

The pileus is convex to expanded, smooth, or sometimes with loose threads from the veil, especially when young, even, dry. The flesh is firm, whitish, and in age becoming somewhat yellowish. The gills are adnate, sometimes decurrent by a little tooth, rather crowded, narrow, whitish, then dull yellow, and becoming dark from the spores, purplish to olivaceous. The stem usually tapers downward, is firm, stuffed, smooth, or with remnants of the veil giving it a floccose scaly appearance, usually ascending because of the crowded growth. The veil is thin and only manifested in the young stage of the plant as a loose weft of threads. As the cap expands the veil is torn and adheres to the margin, but soon disappears.

Plate 6, Figure 25.—Hypholoma sublateritium. Cap brick-red or tawny. (Natural size, often larger.) Copyright.

Plate 7, Figure 26.—Hypholoma appendiculatum (natural size, often larger). White floccose scales on cap (var. coroniferum) and appendiculate veil; caps whitish or brown, tawny, or tinge of ochre. Gills white, then purple-brown. Copyright.

The flesh of this plant is said by European writers to be bitter to the taste, and it is regarded there as poisonous. This character seems to be the only distinguishing one between the Hypholoma sublateritium Schaeff., of Europe, and the Hypholoma perplexum Pk., of this country which is edible, and probably is identical with H. sublateritium. If the plant in hand agrees with this description in other respects, and is not bitter, there should be no danger in its use. According to Bresadola, the bitter taste is not pronounced in H. sublateritium. The taste probably varies as it does in other plants. For example, in Pholiota præcox, an edible species, I detected a decided bitter taste in plants collected in June, 1900. Four other persons were requested to taste the plants. Two of them pronounced them bitter, while two did not detect the bitter taste.

There is a variety of Hypholoma sublateritium, with delicate floccose scales in concentric rows near the margin of the cap, called var. squamosum Cooke. This is the plant illustrated in Fig. 25, from specimens collected on rotting wood in the Cascadilla woods, Ithaca, N. Y. It occurs from spring to autumn.

Hypholoma epixanthum Fr., is near the former species, but has a yellow pileus, and the light yellow gills become gray, not purple.

Hypholoma appendiculatum Bull. Edible.—This species is common during late spring and in the summer. It grows on old stumps and logs, and often on the ground, especially where there are dead roots. It is scattered or clustered, but large tufts are not formed as in H. sublateritium. The plants are 6–8 cm. high, the cap 5–7 cm. broad, and the stem 4–6 mm. in thickness.

The pileus is ovate, convex to expanded, and often the margin elevated, and then the cap appears depressed. It is fleshy, thin, whitish or brown, tawny, or with a tinge of ochre, and becoming pale in age and when dry. As the plant becomes old the pileus often cracks in various ways, sometimes splitting radially into several lobes, and then in other cases cracking into irregular areas, showing the white flesh underneath. The surface of the pileus when young is sometimes sprinkled with whitish particles giving it a mealy appearance. The gills are attached to the stem, crowded, becoming more or less free by breaking away from the stem, especially in old plants. They are white, then flesh colored, brownish with a slight purple tinge. The stem is white, smooth, or with numerous small white particles at the apex, becoming hollow. The veil is very delicate, white, and only seen in quite young plants when they are fresh. It clings to the margin of the cap for a short period, and then soon disappears.

Figure 27.—Hypholoma appendiculatum (natural size), showing appendiculate veil. Copyright.

Sometimes the pileus is covered with numerous white, delicate floccose scales, which give it a beautiful appearance, as in Fig. 26, from specimens (No. 3185 C. U. herbarium), collected on the campus of Cornell University among grass. The entire plant is very brittle, and easily broken. It is tender and excellent for food. I often eat the caps raw.

Hypholoma candolleanum Fr., occurs in woods on the ground, or on very rotten wood. It is not so fragile as H. appendiculatum and the gills are dark violaceous, not flesh color as they are in H. appendiculatum when they begin to turn, and nearly free from the stem.

Hypholoma lacrymabundum Fr.—This plant was found during September and October in wet grassy places in a shallow ditch by the roadside, and in borders of woods, Ithaca, N. Y., 1898. The plants are scattered or clustered, several often joined at the base of the stem. They are 4–8 cm. high, the cap 2–5 cm. broad, and the stem 4–8 mm. in thickness.

Figure 28.—Hypholoma lacrymabundum (natural size). Cap and stem tawny or light yellowish, with intermediate shades or shades of umber, surface with soft floccose scales. Copyright.

The pileus is convex to expanded, sometimes broadly umbonate in age, and usually with radiating wrinkles extending irregularly. On the surface are silky or tomentose threads not much elevated from the surface, and as the plant ages these are drawn into triangular scales which are easily washed apart by the rains. The color is tawny or light yellowish with intermediate shades, darker on the umbo and becoming darker in age, sometimes umber colored, and stained with black, especially after rains where the spores are washed on the pileus. The flesh is tinged with light yellow, or tawny, or brown, soft, and easily broken. The gills are sinuate, adnate, somewhat ventricose, very rarely in abnormal specimens anastomosing near the margin of the pileus, at first light yellowish, then shading to umber and spotted with black and rusty brown as the spores mature, easily breaking away from the stipe, whitish on the edge. Drops of moisture sometimes are formed on the gills. Basidia abruptly clavate, 30–35 × 10–12 µ. Cystidia hyaline, thin walled, projecting above the hymenium 40 µ, and 14–15 µ broad. Spores black, purple tinged, broadly elliptical and somewhat curved, 9–11 × 7–8 µ.

The stem is fleshy to fibrous, the same color as the pileus, floccose scaly more or less up to the veil, smooth or white pruinose above the veil, straight or curved, somewhat striate below.

The veil in young plants is hairy, of the same texture as the surface of the pileus, torn and mostly clinging to the margin of the pileus, and disappearing with age.

The general habit and different stages of development as well as some of the characters of the plant are shown in Fig. 28 (No. 4620 Cornell University herbarium). The edible qualities of this plant have not been tested.

Hypholoma rugocephalum Atkinson.—This interesting species grows in damp places in woods. The plants are tufted or occur singly. They are 8–12 cm. high, the cap 6–10 cm. broad, and the stem 6–10 mm. in thickness.

The pileus is convex to expanded, and the margin at last revolute (upturned). The surface is marked by strong wrinkles (rugæ), which radiate irregularly from the center toward the margin. The pileus is broadly umbonate, fleshy at the center and thinner toward the margin, the flesh tinged with yellow, the surface slightly viscid, but not markedly so even when moist, smooth, not hairy or scaly, the thin margin extending little beyond ends of the gills. The color is tawny (near fulvus). The gills are adnate, slightly sinuate, 5–7 mm. broad, in age easily breaking away from the stem and then rounded at this end, spotted with the black spores, lighter on the edge. The spores are black in mass (with a suggestion of a purple tinge), oval to broadly elliptical, inequilateral, pointed at each end, echinulate, or minutely tuberculate, 8–11 × 6–8 µ. The basidia are short, cylindrical; cystidia cylindrical, somewhat enlarged at the free end, hyaline, delicate, thin-walled, in groups of two to six or more (perhaps this is partly responsible for the black spotted condition of the gills). The stem is cylindrical, even, somewhat bulbous, of the same color as the pileus, but lighter above the annulus, irregular, smooth, fleshy, hollow, continuous with the substance of the pileus. The annulus is formed of a few threads, remnants of the veil, which are stained black by the spores. Figure 29 is from plants (No. 3202 C. U. herbarium) collected near Ithaca, July 18, 1899.

Plate 8, Figure 29.—Hypholoma rugocephalum (⅞ natural size). Cap tawny, gills purple black, spotted. Copyright.