Welcome to Mushroom World
Step into the enchanting world of fungi with Mushroom World – your trusted companion for learning about mushrooms.
Whether you're a curious beginner or a seasoned nature enthusiast, our site provides clear, accessible information and beautiful images to help you better understand and appreciate the mushrooms you encounter.
If you're curious about what fungi actually are, and how they differ from plants and animals, be sure to visit our what are fungi? page for an easy-to-understand explanation.
With thousands of mushroom species known to science, we've chosen to focus on the most common and easily recognisable ones. Each entry includes helpful descriptions, identification tips, and high-quality images, and we’re always working to expand our collection with new species and updated content.
Come and explore the wonders of mushrooms with us. We hope you find our site informative, inspiring, and a valuable resource on your journey of mushroom discovery.
What you can do on Mushroom World
Browse the database
Explore mushrooms from the alphabetical list or search by name or properties.
Identify a mushroom
Know some characteristics but not the name? Use our mushroom identification helper to narrow it down.
New to identification? Start with identification basics.
Test your knowledge
Try our identification quiz and see how many mushrooms you recognise. Each run gives you new questions.
Upload your photos
Have good mushroom photos to share? Use the upload form and we will see if we can include them on the site.
Today's Mushroom
A quick highlight from our database
Today's mushroom is Bolbitius titubans (Yellow Fieldcap). It grows in Europe, North America.
Dimensions: Cap 2.5-6 cm diameter, stem 3-12 cm tall * 0.3-0.6 cm thick
Description:
Bolbitius titubans, commonly known as the Yellow Fieldcap, is a small, delicate agaric mushroom often appearing in grassy areas such as lawns, pastures, and meadows, particularly after rainfall. Distinguished by its bright yellow, slimy cap when fresh, which soon fades and becomes fragile, this species is notable for its short-lived nature, sometimes collapsing within hours of emerging. The stem is slender and hollow, supporting pale gills that quickly turn brown as the spores mature. As a saprobic fungus, it contributes to the decomposition of organic matter in soil and grass. Its sudden appearance and rapid disappearance make it a fascinating, fleeting find for both mycologists and casual observers alike.
Cap bright yellow when young, egg-shaped to conical, soon expanding to convex or flat and quickly fading to whitish or pale tan. The surface is smooth, viscid when fresh, often becoming lined or striate with age. Gills narrowly attached or almost free, fragile and soft, starting pale yellowish and turning cinnamon to rusty brown as the spores mature. Stem slender, hollow, white to yellowish, finely powdery or downy near the apex and base, very delicate and easily collapsing. The stem has no ring. Spore print cinnamon to rusty brown.
Microscopic Features: Spores are ellipsoidal, smooth, measuring 11–15 × 6–9 µm.
Bolbitius titubans on the First Nature Web site.
Bolbitius titubans on the MushroomExpert.Com Web site.
If you are interested in this mushroom, look it up in our database for more detailed photographs and additional information.
Many mushrooms are poisonous, and some can be lethally toxic. Distinguishing between edible and poisonous mushrooms can be very challenging. Therefore, we strongly advise against consuming wild mushrooms. This website does not contain any information about the edibility or toxicity of mushrooms.
Although efforts have been made to ensure accuracy on this website, the information may contain errors and omissions. Therefore, all content provided is for educational and informational purposes only and should not be relied upon or used as a basis for consuming any plants or mushrooms.
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