GROWING GOURMET - Anto2ni.it

298 GROWTH PARAMETERS
Figure 270. Mycelium of P.
djamor 14 days after inoculation
Originally published by Fries in 1838 as Lentinus djamor Fr., the Friesian concept has been
amended to include many varieties. No type collection survived the passage of time. Corner (1981)
proposed the pink gilled forms be called P. djamorvar. roseus. He reports that the spores of this variety
are cream color. Guzman et al. (1993), calls "P. djamour" (sic) synonymous to P flabellatus
describing the spores as white to grey to light honey yellow. However, my studies reveal that the color
of the fruitbody directly influences the color of the spores. Pink mushrooms give pink spores. White
to beige mushrooms, from the same dikaryon that produced the pink mushrooms, gives an off-white to
light gray-beige spores. As the pink mushrooms fade with maturity, the spore color also changes. Redhead
(1993) suspects this pigment is present in the cytoplasm and not in the outer spore coat.
One contradiction with this proposed synonymy is with the cellular arrangement of the flesh, best
seen at the stem base. According to Singer (1986) and Pegler (1983) P flabeilatus has a monornitic
hyphal system whereas P. salrnoneo-Stralflineus has dimitic hyphae. Corner (1981) considers P.
djamor and P flabellatus synonyms and states that both have dimitic hyphae, in apparent contradiction
to Singer and Pegler. Guzman (1993) notes that young specimens of P.djarnor appear to have
monomitic hyphae, with dimitic forms developing in age. P. ostreato-roseuS Singer is included within
the P djamor complex. Another pink Oyster mushroom is the Himalayan Pleurotus eous (Berkeley)
Saccardo. P eous 'relationship to P djamor should be carefully checked for synonymy. They maybe
the same species. (See Corner (1981), Pegler (1972), and Zadrazil (1993)).
This large group of pink Oyster varieties needs further study. The pink Oyster mushrooms represent
a large complex of varieties in a state of rapid convergent andlor divergent evolution. Until DNA
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