Agaricus abramsii is a species of mushroom-forming fungus in the family Agaricaceae. It is endemic to the Santa Cruz Mountains of California, USA. It was first described described by mycologist William A. Murrill in 1912. It is notable for its irregular, thick, and fleshy cap [1][2].
| Agaricus abramsii | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Agaricaceae |
| Genus: | Agaricus |
| Species: | A. abramsii
|
| Binomial name | |
| Agaricus abramsii | |
Description
editThe pileus (cap) of Agaricus abramsii is irregular in shape due to the position of the plant, measuring approximately 6 cm in diameter. The surface is dry, finely imbricate-scaly, and whitish with a rosy tint. The lamellae (gills) are free, crowded, narrow, and plane, with a pallid coloration. Spores are ovoid, smooth, and range from hyaline to pale umbrinous under a microscope, measuring 6–7 × 3.5–4 µm. The stipe (stem) is eccentric and fusiform, white, polished, and hollow, measuring approximately 6 cm in length and 2 cm in thickness. The annulus is located near the base, white, and not conspicuous [1].
Habitat
editAgaricus abramsii was discovered growing on a clay bank by the roadside at an elevation of 800 feet in the Santa Cruz Mountains near Palo Alto, California. The type specimen was collected by W. A. Murrill and L. R. Abrams on November 25, 1911. The irregular shape of the pileus is attributed to its position on the side of the bank [1].
References
edit- ^ a b c Murill, William A. (1912). "The Agaricaceae of the Pacific Coast: III". Mycologia. 4 (6). Taylor & Francis: 294-308.
- ^ "Agaricus abramsii Murrill". Agaricus abramsii Murrill. Retrieved 21 May 2023.
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