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Danny’s DNA Discoveries – Pluteus, Volvopluteus and Volvariella of the PNW
Click here for my Pictorial Key to Pluteus, Volvopluteus and Volvariella |
Introduction
This part of the Pluteaceae family is easy to recognize, having evolved free gills and pink spores. Pluteus grow on wood and do not have a volva at the bottom of the stem. Volvopluteus and Volvariella do have a sac volva (like some Amanita) and are found in a variety of habitats like wood, cultivated soil, grass, and parasitic on other mushrooms. Volvopluteus has a smooth, viscid cap. Volvariella has a fibrillose, dry cap. They are often tall, thin, statuesque mushrooms, whose caps may flatten out. This stature, the free gills and the volva that some have, are shared by their sister family, Amanitaceae, which did not evolve the pink spores. Melanoleuca is the other common genus in the Pluteaceae, but with attached gills and white spores, the only feature they have in common with their other family members is their tall statuesque, often flat capped nature, which is sometimes key to identifying a Melanoleuca. abundant common uncommon rare - colour codes match my Pictorial Key and are my opinions and probably reflect my bias of living in W WA. Rare species may be locally common in certain places at certain times. Click here to download the FASTA data of all my DNA sequences |
Summary of Interesting Results
Here are some of the newest, most interesting results of the study:
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![]() No sac volva. Growing on wood. This section smells and tastes like radish and has pleurocystidia on the gill faces that are fat and spindle shaped and look like they are wearing a jester cap.
Species mentioned: Pluteus cervinus, exilis, elaphinus, primus, orestes, parilis n.p., pouzarianus, atromarginatus, laricinus, salicinus, petasatus, magnus, leucoborealis, brunneidiscus, washingtonensis, heterocystis, pellitus, nothopellitus, hongoi |
![]() No sac volva. Growing on wood. This section does not smell of radish and does not have the jester capped pleurocystidia. The microscopic cap cuticle is composed of rounded elements, which makes the cap susceptible to wrinkling. (There may also be elongated elements like section Hispidoderma, but that section should not have any rounded elements). Usually they are colourful and have a smooth cap, but they might have a felty or fibrillose cap like section Hispidoderma, so if you don't have a microscope, also check that section. Species mentioned: Pluteus fulvibadius, fulvobadius, romellii, chrysophlebius, rugosidiscus, aurantiorugosus, phaeocyanopus, thomsonii, tomentosulus, nanus, hispidulus, podospileus, inflatus |
![]() No sac volva. Growing on wood. This section does not smell of radish and does not have the jester capped pleurocystidia. The microscopic cap cuticle is composed of elongated elements. (Section Celluloderma may also have elongated elements, but it should have at least some rounded elements too). Usually they have a fibrillose or velvety cap, but not always, so if you don't have a microscope, also check section Celluloderma. Species mentioned: Pluteus leoninus, flavofuligineus, umbrosus, granularis, plautus, latifolius |
![]() Sac volva. Growing on the ground, but often in rich soil or grass. The cap is viscid and smooth. Species mentioned: Volvopluteus gloiocephalus, Volvariella speciosa |
![]() Sac volva. Growing on wood, the ground, rich soil, grass or other mushrooms. The cap is dry and fibrillose. Species mentioned: Volvariella volvacea, bombycina, surrecta, pusilla, hypopithys, smithii |