Trichia persimilis
| Trichia persimilis | ||||||||||||
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Trichia persimilis , ripe (yellow) and almost ripe (white) fructifications |
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| Trichia persimilis | ||||||||||||
| P. Karst. |
Trichia persimilis , in German sometimes called ocher color Haarstäubling called, is a widespread and fairly common slime mold (Myxomycet) from the family of Trichiidae .
features
Hemitrichia calyculata forms sessile fruit bodies ( sporocarp ), which have a spherical, more rarely a somewhat elongated shape. They grow in tightly packed groups. The color ranges from light brown to brown-yellow to ocher. The individual sporocarps reach a height of up to 1 mm and a width of 0.2 to 1.2 mm. They are often deformed by the side pressure in the close arrangement.
Under the sporocarpies there is a membranous base ( hypothallus ) common to the group . It is transparent and appears light yellow-brown to brown in the transmitted light. The shell ( peridia ) itself is light yellow to yellow in color. It tears open irregularly in the upper half and disintegrates there; the lower part is permanent. It shows fine, sometimes swirling lines. The hair braid ( capillitium ) is inelastic and colored yellow. The fibers (elaters) have 4 to 5 tightly wound spiral ridges and have fine 1–5 µm long spines that are colorless and rarely branched. Longitudinal stripes are weak. The ends of the elater are short (5–15 µm) pointed, rarely double-pointed. The fibers are 4–6 µm thick and sometimes thickened with bubbles, where they can be up to 15 µm wide. The spores appear yellow to yellow-brown in bulk, and yellow in transmitted light. They are round, seldom broadly elliptical in shape and have a 1–2 µm wide edge zone. On its surface there is an interrupted network, which is often only present in fragments and composed of smaller net meshes. The spores measure 10-16 µm in diameter; broadly elliptical specimens are 12–13 × 14–16 µm in size. The edge is included in each case.
The plasmodium is white.
Species delimitation
Outwardly, Trichia scabra is very similar. Their fructifications have an iridescent peridia and are usually less dense. In addition, the scalp and spores are more orange in color. Under the microscope, T. scabra has spores with a fine-meshed network that is not composed of individual meshes. Trichia favoginea , if considered as a separate species, differs by an i. d. R. complete network on the spurs and a wider edge zone. There are also fructifications with bright yellow scalp, which is never the case with T. persimilis .
Ecology and diffusion
Trichia persimilis colonizes mainly hardwood, less often coniferous wood. The substrate form u. a. Birch , oak , hornbeam and red beech and, in the case of conifers, spruce . In addition, various stalk porlings (Polyporales) can serve as a base. The fructification takes place all year round, but especially from September to May. Socialization was observed with Arcyria helvetica , A. incarnata , Comatricha tenerrima , Cribraria persoonii , Dianema harveyi , the blood milk fungus ( Lycogala epidendrum see left), Stemonitopsis typhina , Trichia decipiens var. Decipiens , T. favoginea , T. scabra and T. varia .
The species is a cosmopolitan and can be found frequently in Central Europe .
Systematics
Due to the intermediate forms of T. favoginea , T. affinis and T. persimilis , the three taxa are grouped by some authors into one species. However, this view is controversial.
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 .
