Name: Lactarius fragilis var. rubidus Hesler & A.H. Sm.
Most Confident Observations:
Copyright © 2009 Darvin DeShazer (darv)
Copyright © 2013 Darvin DeShazer (darv)
Copyright © 2013 Darvin DeShazer (darv)
Copyright © 2013 George Riner (mycogeo)
Version: 7
Previous Version 

First person to use this name on MO: Nathan Wilson
Editors: Darvin DeShazer, Jason Hollinger, walt sturgeon, Erlon Bailey, Joseph D. Cohen


Rank: Variety

Status: Deprecated

Name: Lactarius fragilis var. rubidus

[#117712] Index Fungorum

[#117712] MycoBank

GSD Species Synonymy

Author: Hesler & A.H. Sm.

Citation: North American Species of Lactarius (Ann Arbor): 505 (1979)

Preferred Synonyms:Lactarius rubidus (Hesler & A.H. Sm.) Methven

Misspellings: Lactarius fragilus var. rubidus


Domain: Eukarya

Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Russulales

Family: Russulaceae

Genus: Lactarius

Species: Lactarius fragilis

Brief Description: [See More | Edit]

Candy caps are small to medium-size mushrooms, with a pileus that is typically about 5 cm or less, and with coloration ranging through various burnt orange to burnt orange-red to orange-brown shades, but most typically a “ferruginous” tone in the deep orange-red range. The pileus shape ranges from broadly convex in young specimens to plane to slightly depressed in older ones; lamellae are attached to subdecurrent. The entire fruiting body is quite fragile and brittle and the stipe is hollow. Like all members of Lactarius, the fruiting body exudes a latex when broken, which in this species is whitish and watery in appearance, and is often compared to whey or nonfat milk. The latex may have little flavor or may be slightly sweet, but should never taste bitter or acrid. These species are particularly distinguishable by their scent, which has been variously compared to maple syrup, camphor, curry, fenugreek, burnt sugar, Malt-O-Meal, or Maggi-Würze. This scent may be quite faint in fresh specimens, but typically becomes quite strong when the fruiting body is dried.

Microscopically, they share features typical of Lactarius, including round to slightly ovular spores with distinct amyloid ornamentation and sphaerocysts that are abundant in the pileus and stipe trama, but infrequent in the lamellar trama123.

Descriptions: [Create]


Add Comment
By: Jason Hollinger (jason)
2012-04-02 23:07:19 CDT (-0500)

From Darvin DeShazer:

The western candy cap is correctly called Lactarius fragilis var. rubidus. I just published an article in Biochemical Systematics and Ecology on the chemistry of the maple syrup odor and had to search out the real accepted name. The name Lactarius rubidus and that name was NEVER published. Andy Methuven was suppose to publish it in 1998 and it never happened.

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