GROWING GOURMET - Anto2ni.it

254 GROWTH PARAMETERS
Hypsizygus ulinarius (Bulliard: Fries) Redhead
Figure 225. H. ulmarius mycelia at 4 and 8 days on malt yeast agar mewa.
Introduction: A relatively rare mushroom which usually grows singly or in small groups on elms
and beech, Hypsizygus ulmarius closely parallels the morphology of an Oyster mushroom but is far
better in flavor and texture. Unique microscopic features qualify its placement into the Genus
Hypsizygus. Increasingly popular in Japan, H. ulmarius has yet to be cultivated commercially in
NorthAmerica where I believe it would be well received by discriminating markets. This mushroom
can become quite large.
Common Names: The Elm Oyster Mushroom
Shirotamogitake (Japanese for "White Elm Mushroom")
Taxonomic Synonyms & Considerations: An Oyster-like mushroom, Pleurotus ulmarius (Bull.:
Fr.) Kummer, became Lyophyllum ulmariurn (Bull. :Fr.) Kuhner and is most recently placed as
Hypsizygus ulmarius (Bull.: Fr.) Redhead. H. ulmarius and H. tessulatus are closely related, living in
the same ecological niche. Hypsizygus ulmarius is not as common, but much larger, lighter in color,
and has a flared, thin, uneven and wavy margin at maturity. H. ulmarius is similar to an Oyster mushroom
in form. H. tessulatusis smaller, stouter, with a thicker stem and a cap that is speckled with dark
"water" markings. To my eye, H. tessulatus is closer in form to a Lyophyllum or a Tricholoma while
H. ulmarius looks more like aPleurotus. (Please refer to the taxonomic discussion of H. tessulatus on
page 248).
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