Synonyms: Agaricus campestris, Agaricus edulis, Agaricus exquisitus, Agaricus fissuratus, Agaricus leucotrichus, Agaricus nivescens, Agaricus parkensis, Agaricus vaporarius, Fungus arvensis, Pratella arvensis, Psalliota arvensis, Psalliota campestris, Psalliota fissurata, Psalliota leucotricha, Psalliota nivescens.
Common name: horse mushroom.
Extract from Wikipedia article: Agaricus arvensis, commonly known as the horse mushroom, is a mushroom-forming fungus of the genus Agaricus.
Afrikaans: Perdesampioen, Arabic: غاريقون بستاني, Basque: Azpibeltz, Belarusian: Пячарка, Catalan: Rubiol anisat, Chinese: 野蘑菇, Croatian: Lipika, Czech: Pečárka ovčí, Dutch: Gewone anijschampignon, Egyptian Arabic: غاريقون بستانى, Estonian: Aasšampinjon, Finnish: Peltoherkkusieni, French: Agaric des jachères, Galician: Bóla de neve, Georgian: მინდვრის ქამა, German: Weißer Anis-Champignon, Hungarian: Erdőszéli csiperke, Icelandic: Mókempa, Japanese: シロオオハラタケ, Kashubian: Òwczô pólnica, Latvian: Tīruma atmatene, Lithuanian: Dirvinis pievagrybis, Macedonian: Коњски шампињон, Polish: Pieczarka biaława, Russian: Шампиньон полевой, Serbian: Липка, Slovenian: Poljski kukmak, Swedish: Snöbollschampinjon, Ukrainian: Печериця польова, Welsh: Caws ceffyl, Yakut: Хонуу өтөҕүн тэллэйэ.
Agaricus arvensis, also known as the horse mushroom, is a large, edible fungus with a cap that ranges from 3-6 inches in diameter, typically white to light brown in color, and often has brown scales. In East and Central Texas, it is commonly found in fields, meadows, and along roadsides, particularly after rainfall during the spring and fall months. The stem is usually stout, measuring 1-2 inches in thickness and 2-4 inches in height, with a ring that may be faint or absent. The gills are free from the stem and pink to brown in color, turning chocolate-brown as the spores mature. This species can form large colonies and is often associated with grassy areas and rich soil.
Underside of a horse mushroom (Agaricus arvensis) in Lick Creek Park. College Station, Texas, April 19, 2024
Iron Bridge Trail, College Station, Brazos County, Texas, United States
Horse mushroom (Agaricus arvensis) in bushes of Yaupon near a road in Lick Creek Park. College Station, Texas, April 19, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Cross section of a horse mushroom (Agaricus arvensis) in Lick Creek Park. College Station, Texas, April 19, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Spores (in KOH) of a horse mushroom (Agaricus arvensis) collected in Lick Creek Park. College Station, Texas, April 19, 2024Observations of Agaricus arvensis in East and Central Texas reveal distinct characteristics. In Lick Creek Park, College Station, the fungus was found growing near a road in bushes of Yaupon on April 19, 2024. The underside of the mushroom displayed a unique pattern, while a cross-section revealed its internal structure. Microscopic examination of spores in potassium hydroxide (KOH) solution showed distinctive features, aiding in identification. These observations suggest that Agaricus arvensis thrives in specific environments, such as near roads and in association with certain plant species like Yaupon. The findings provide insight into the habitat preferences and morphological characteristics of this fungus in East and Central Texas, specifically in the College Station area. The observations highlight the importance of detailed examination for accurate identification of fungal species.
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