| Agrocybe arvalis | |
|---|---|
 | |
| McKeever Environmental Learning Center, Sandy Lake, Pennsylvania, USA | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Strophariaceae |
| Genus: | Agrocybe |
| Species: | A. arvalis |
| Binomial name | |
| Agrocybe arvalis (Fr.) Singer | |
Agrocybe arvalis, commonly known as the digitate fieldcap [1] or tuberous fieldcap, is a species of mushroom. It grows in garden beds and on woodchips. [2]
Agrocybe arvalis has a brown, hygrophanous cap and brown spore print. [3] It does not have an annulus. The cap is 1-3 centimeters in diameter. The gills start out yellowish buff in color, and darken in age. The stipe is 5-10 centimeters long and 2-4 millimeters wide. [2]
This species fruits from a sclerotium. [2]
Spores are elliptical and smooth, ranging from 9–10.5 × 5.2–6 µm . [2] Pleurocystidia can have 3–5 apical, finger-like projections.
| Agrocybe arvalis | |
|---|---|
| Mycological characteristics | |
 | Gills on hymenium |
  | Cap is convex or flat |
 | Hymenium is adnate |
 | Stipe is bare |
 | Spore print is brown |
 | Edibility is unknown |
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