GROWING GOURMET - Anto2ni.it

GROWTH PARAMETERS 247
spores of species in the Genus Pleurotus whose spores are more cylindrical and greater than 7 microns
in length. Otherwise, mushrooms in these three genera closely resemble each other
macroscopically, making cultivated mushrooms difficult to differentiate without the use of a microscope.
To my eye, Hypsizygus ulmarius looks much more like an Oyster mushroom while Hypsizygus
tessulatus resembles the terrestrially bound Lyophylluin species, especially when young.
For cultivators, another notable advantage of Hypsizygus tessulatus and H. ulmarius over
Pleurotus species is their much reduced spore load. Oyster mushroom growers in this country might
want to follow the lead of the Japanese in switching over to Hypsizvgus cultivation for the many clear
advantages.
Hypsizygus tessulatus (Bulliard: Fries) Singer
Figure 218. H. fessulatus mycelium 4 and 8 days after inoculation onto malt extract agar.
Introduction: A delicious species, H. tessulatus falls under the umbrella concept of the Japanese
"Shimeji" mushrooms. Firm textured, this mushroom is considered one of the most "gourmet" of
the Oyster-like mushrooms. Recently, this mushroom has been attributed to having anti-cancer
properties. (Ikekawa, 1990). Increasingly better known, this obscure mushroom compares favorably
to P. ostreatus and P pulmonarius in North American, European and Japanese markets.
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