Trichia scabra
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Trichia scabra , sometimes in German as Orange Colored Haarstäubling called, is a common slime mold (Myxomycet) from the family of Trichiidae .
features
Trichia scabra forms sessile fruit bodies ( sporocarp ), which are usually spherical, more rarely a somewhat elongated or slightly curved shape. They grow in tightly packed groups. In the vicinity of the point of attachment on the substrate, the sporocarps are colored orange-brown and then iridescent a little like metal. They are rarely tinted from brown to dark brown. The individual sporocarps are 0.4–1 mm wide. Due to the side pressure in the dense arrangement, deformed individual copies can be up to 1.5 mm high.
Under the sporocarpies there is one of the group's common, transparent, membranous underlayer ( hypothallus ). The shell ( peridia ) itself is light yellow and smooth. It tears in the upper half irregularly. The hair braid ( capillitium ) is inelastic and colored bright yellow to yellow-orange. The fibers (Elateren) have 3 to 4 tightly wound spiral strips, which are somewhat irregular in outline. They have fine 1–1.5 µm long spines. The elaters are nodularly thickened in places, where they can be up to 8 µm wide; otherwise the diameter is 3–6 µm. The scalp has numerous free ends at which the fibers are short (3–13 µm) pointed. The spores appear yellow to orange in bulk, yellow in transmitted light. They are covered with a fine-meshed net that is interrupted in places. The spores measure 9–12 µm in diameter; the edge is 0.5 µm wide.
The plasmodium is white.
Species delimitation
Trichia scabra is characterized by the iridescent peridia, the more orange than yellow capillitium and the growth in dense groups. Trichia persimilis , which lacks the orange hues, is similar . Microscopically, it differs through a large-meshed net on the spores, which is interrupted and composed of smaller net meshes. Other possibilities of confusion exist with representatives of the genus Oligonema , which have different characteristics in the spores and in the scalp.
Ecology and diffusion
Trichia scabra mainly grows on dead hardwood or its bark. Occurrences on softwood such as spruce and fir are also less common . Transitions to mosses are also possible based on the populated wooden substrate . The species is found in Central Europe up to an altitude of 1100 m above sea level. To meet NHN . Were Socialization with Arcyodes incarnata , Arcyria denudata , Hemitrichia calyculata , H. clavata , H. serpula , lamproderma arcyriodes , the blood Milchpilz ( Lycogala epidendrum , s. L.) Metatrichia vesparium , Perichaena depressa , Physarum contextum , Stemonitis herbatica , Stemonitopsis typhina , Trichia favoginea , T persimilis and T. varia observed. The common occurrence with the latter species is particularly common.
The species is distributed worldwide.
swell
- Hermann Neubert , Wolfgang Nowotny , Karlheinz Baumann : The myxomycetes of Germany and the neighboring alpine region with special consideration of Austria . tape 1 . Karlheinz Baumann Verlag, Gomaringen 1993, ISBN 3-929822-00-8 .