06/Oct/24, 3:14 PM
Soodla jõgi, Harjumaa, Estonia
Mixed forest, on blueberry plant stems
59°22'46.6"N 25°28'58.9"E
🔆 Some overcast, forest shade
Original Instagram postPhysarum rubiginosum
- Scientific identification
- Physarum rubiginosum Fr. & Palmquist, 1818
- Family
- Physaraceae
- Class
- Myxogastria
- Genus
- Physarum
Names across languages
The scientific profile
From the latest record: 2024-10-06.
Plasmodium Phase
The active feeding phase is a slimy, shapeless mass, typically yellow, orange in color, crawling over decaying plant material and feeding on microorganisms
Fruiting Bodies
Forms scattered to grouped sporangia, spherical to slightly flattened, supported by short, delicate stalks, surface is powdery, rusty-brown, with a metallic sheen as they mature
Description
Spore mass powdery, rusty-brown in mature fruiting bodies
Ecology
Saprobic, on decaying leaves, wood, bark on soil, in moist, shaded areas of forests or gardens, spring to autumn
Edibility
Inedible
Fruit body
Individual sporangia are 0.3–1 mm in diameter, clusters may cover several centimeters of substrate
Chemical reactions
Peridium dissolves in KOH, plasmodium may stain substrates with orange pigment
Odour
Odour indistinct or slightly earthy
Microscopy
Spores spherical, warted or spiny, 8–11 µm, dense, branching capillitium network
Overview
Distinctive slime mold, characterized by its rusty-brown or orange plasmodium and metallic-hued sporangia
Field encounters
Source hashtags
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