Bolbitius titubans
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Agaricales
Family:
Bolbitiaceae
Genus:
Bolbitius
Species:
B. vitellinus
Binomial name
Bolbitius titubans
(Bull.) Fries
Synonyms

Bolbitius titubans, also known as Bolbitius vitellinus, and commonly known as the sunny side up[1] is a widespread species of mushroom found in America and Europe. It grows chiefly on dung or heavily fertilized soil, and sometimes on grass. It is nonpoisonous.[2]

Description

The mushroom cap is between 1.5–7 cm,[3] and grows from egg-shaped when young to broadly convex, finally ending up nearly flat.[4] The cap's color starts yellow or bright yellow, and fades to whitish or greyish with age.[5] The gills are free from the stem or narrowly attached to it, are fragile and soft, and fade from whitish or pale yellowish to rusty cinnamon with age.[4] The stem is 3–12 cm tall and 2–6 mm wide,[3] is whitish-yellow with a fine mealy powdering, and is very delicate.[6] The spores are brown, elliptical, and smooth.[3]

The mushroom's edibility is unknown but it is too small to be worthwhile.[3]

A similar species is Bolbitius aleuriatus.[3]

References

Bolbitius titubans
View the Mycomorphbox template that generates the following list
Gills on hymenium
Cap is ovate or flat
Hymenium is adnate or free
Stipe is bare
Spore print is brown
Ecology is saprotrophic
Edibility is edible, but unpalatable
  1. ↑ Arora, David (1986). Mushrooms demystified: a comprehensive guide to the fleshy fungi (Second ed.). Berkeley: Ten Speed Press. pp. 474–475. ISBN 978-0-89815-169-5.
  2. ↑ Miller Jr., Orson K.; Miller, Hope H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, CN: FalconGuide. p. 270. ISBN 978-0-7627-3109-1.
  3. 1 2 3 4 5 Davis, R. Michael; Sommer, Robert; Menge, John A. (2012). Field Guide to Mushrooms of Western North America. Berkeley: University of California Press. p. 248. ISBN 978-0-520-95360-4. OCLC 797915861.
  4. 1 2 Kuo, Michael (February 2012). "Bolbitius titubans". Retrieved October 31, 2013.
  5. ↑ "California Fungi—Bolbitius titubans". Retrieved October 31, 2013.
  6. ↑ "Rogers Mushrooms — Bolbitus vitellinus Mushroom". Archived from the original on December 5, 2008. Retrieved October 31, 2013.


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