Superregnum: Eukaryota
Regnum: Fungi
Subregnum: Dikarya
Divisio: Basidiomycota
Subdivisio: Agaricomycotina
Classis: Agaricomycetes
Subclassis: Agaricomycetidae
Ordo: Agaricales
Subordo: Agaricineae
Familia: Bolbitiaceae
Genus: Bolbitius
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
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.
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.
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.
Kuo, Michael (February 2012). "Bolbitius titubans". Retrieved October 31, 2013.
"California Fungi—Bolbitius titubans". Retrieved October 31, 2013.
"Rogers Mushrooms — Bolbitus vitellinus Mushroom". Archived from the original on December 5, 2008. Retrieved October 31, 2013.
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