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Page number:61 
Description type:Culture description 
Description:Poria carbonica Overh., in Nobles, Canad. Jour. Res. C, 21: 232. 1943.
Description of cultures
Key Pattern. A-O-M-1-2-3-10-16, A-O-M-1-2-3-10.
The cultural characteristics of Poria carbonica have been published by Nobles (17, 18, 19, 20).
Available for the present study were nine cultures isolated from basidiocarps or the associated rot and 20 isolates from decay in forest trees, logs at the mill, and wooden products. Most of the 20 decay isolates were from Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), including eight cultures from boats and barges. Other host woods represented were species of Pinus and Tsuga. These cultures were from Mass., N. Y., N. J., Miss., Mont., Oreg., Wash., and B. C.
All of the hyphal elements described by Nobles are readily observed in 14-day-old Petri dish cultures except the stiffly branching hyaline hyphae, which are usually present but may be lacking in an occasional isolate at that age.
The white, soft felty to woolly mat, medium growth rate, negative oxidase reactions, and presence microscopically of chlamydospores, conidia, and stiffly branching hyaline hyphae are the distinctive cultural characteristics of P. carbonica at 14 days.

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