White-leaved soft knight
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White-leaved soft knight ( Melanoleuca leucophylloides ) |
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| Melanoleuca leucophylloides | ||||||||||||
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The Weißblättrige soft Ritterlingsartige ( Melanoleuca leucophylloides ) is a fungal art from the family of Ritterlingsartige relatives ( Tricholomataceae ).
features
Macroscopic features
The domed hat of the white-leaved soft knight measures (3–) 5–7 cm in diameter and has a more or less bent edge. The hat skin is bald, sometimes shiny and its color is very variable. The spectrum ranges from blackish-soot-brownish, which can fade dirty-sepia, through bronze to milk coffee-colored or veiny dirty olive. In contrast to this are the pure white slats. They are not too crowded and are bulging on the handle. The spore powder is also white. The stem is 5–8 × 0.4–1 cm in size, plus / minus darkly fibrous stripes and pale colored above. While the surface of the type variety is not powdered, the pruinatipes Bon & Moreno 1980 variety has completely frosted stems. The meat in the stem bark is the same color, but pale inside.
Microscopic features
The spores correspond to the rasilis type and are 6–7 (–8.5) × 5–6 (–6.5) µm in size. Stinging hair-shaped cystids occur scattered. They have a more or less elongated or bent neck and sometimes a misshapen belly. In addition, some clubbed or lobed hairs can appear on the blade edges. The top layer of the hat consists of tangled, 5–8 (–10) µm wide hyphae with variable or blunt, free and sometimes short-jointed ends. On the stem there are short hairs and some caulocystids under the lamellar base.
Ecology and diffusion
Like all species of the genus, the white-leaved soft knight lives saprotrophic . It grows on sandy soils in the grass, sometimes under pines or green oaks . In Germany, two finds are known from southern Bavaria: in the Munich area on an extensively managed park area in a mixed spruce forest under oak and near Augsburg on a poor oat-sage meadow with calcareous soil. A find from Teramo / Torrente Vezzola was documented in Italy. There the white-leaved soft knight grew on a river between willows and other trees on a damp gravel ground.
Systematics
Marçel Bon originally described the taxon as the leucophylloides variety of Melanoleuca rasilis in 1973 . In 1980 the French mycologist raised the fungus to species rank via recombination.
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Individual evidence
- ↑ a b c Marcel Bon: Flore mycologique d'Europe. Tome 2. Tricholomataceae 1 . Association d'Ecologie et de Mycologie. 1991.
- ↑ Distribution of Melanoleuca leucophylloides . Mushroom mapping 2000 online. German Society for Mycology. Retrieved March 1, 2011.
- ^ Marino Zugna: Portrait of the white-leaved soft knight with numerous microphotos (in Italian) . In: Forum di Micologia AMB Gruppo di Muggia e del Carso .
- ↑ Marçel Bon: Agaricales de la region Languedoc-Cevennes - 1 . In: Documents Mycologiques 3 (9) . Société mycologique du Nord de la France. 1973. pp. 1-50.
- ↑ Marçel Bon: Clé monographique des Lépiotes d'Europe (Agaricaceae, Tribus Lepioteae et Leucocoprineae) . In: Documents Mycologiques 11 (43) . Société mycologique du Nord de la France. 1980. pp. 1-77.
Web links
- Andreas Kunze: Portrait of the white-leaved soft knight . In: Discussion forum on Fungiworld.com .