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entoloma aprile


Entoloma (or pinkgills) is a genus of terrestrial pink-gilled mushrooms with angular spores. They have a drab appearance, pink gills which are attached to the stem, a smooth thick cap, and angular spores. Most Entolomas are saphrophytic. The best-known member of which is the livid agaric (Entoloma sinuatum) responsible for a number of poisonings over the years in Europe and North America, and E. rhodopolium in Japan. Some southern hemisphere species found in Australia, Entoloma rodwayi and E. viridomarginatum, and E. hochstetteri from New Zealand, are very colourful, with pilei of unusual shades of green and blue-green. Most Entolomas are dull shades of olive, brown, or grey and some are mycorrhizal.

Taxonomic history

The name is derived from the Ancient Greek words entos/ἐντός 'inner' and lóma/λῶμα 'fringe' from the inrolled margin. The Swedish mycologist Elias Magnus Fries classified all pink-spored gilled fungi in a series Hyporhodius within his large genus Agaricus, subdividing into five tribes based on cap shape, gills and size in 1821. He later refined this in 1838, placing those with universal veils into tribe Volvaria, those with free gills and a discrete stipe into tribe Pluteus, those with a Tricholoma-like shape into tribe Entoloma, and those with a depressed cap and decurrent gills into tribe Clitopilus. The small tribe Leptonia had convex fleshy membranaceous caps, the tribe Nolanea, were slender fungi with bell-shaped caps and hollow stems, and lastly tribe Eccilia had umblicilate caps and adnate gills. Paul Kummer raised Entoloma, Nolanea, Leptonia and Eccilia to genus-level in 1871, though Lucien Quélet created a new genus Rhodophyllus uniting all those fungi with pinkish-red adnate or sinuate gills and angular spores, similar in scope to the original Hyporhodius. The two classifications coexisted until recently, with those taxonomists favoring a broader genus concept following Quélet, and the others Kummer. French mycologist Henri Romagnesi took up study of the genus in what was to last over forty years, describing new species and creating a new infrageneric classification making it one of the most studied and best known agaric genera to date. Over time, more authors and texts have followed Kummer.

The genus as it stands appears to be polyphyletic when looking at data produced by the molecular study by Moncalvo in 2002, with species of Nolanea, Leptonia and Inocephalus interspersed with various pinkgill species in a broadly monophyletic entolomatoid group.


Most species are saprotrophic, though some may form mycorrhizal relationships. They may be found in a wide variety of habitats, including grasslands, woodlands, peat-bogs and moors, and Arctic or alpine conditions. Several species including Entoloma saepium, E. clypaetum, E. aprile and E. saundersii are thought to form mycorrhizal relationships with members of the Rosaceae including Malus, Pyrus, Crataegus and Prunus.


Pinkgills are found the world over, from the equator to polar regions. Some Arctic species are circumpolar in their distribution. Others are widely distributed and some, such as E. sericeum and E. incanum may have been spread by man.


Although some of the spring entolomas, such as E. clypeatum, are consumed, especially in Europe, edibility is unknown for many species, and some are definitely poisonous and dangerous. E. rhodopolium has been found to contain significant quantities of the mycotoxin muscarine. Most Entolomas are very difficult to identify, but Entoloma abortivum is edible.


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