Search on : Taxa descriptions


 Add this item to the list  Daedalea unicolor (Bull.) Fries
Page number:317 
Remarks (public):The species having the same key patterns as Daedalea unicolor are difficult to separate in culture. The lacunose surface and growth of mycelium across the lid of the Petri dish in cultures of D. unicolor may be sufficiently distinctive to separate it from the other species in the group. 
Description type:Culture description 
Description:Daedalea unicolor (Bull.) Fries
KEY PATTERN: (1,2) 1 1 1 9 2 2 2 1 2 3
CULTURES EXAMINED: CANADA. Quebec: lberville, F8022; Ile Jésus, on Betula papyrifera, 10202. Ontario: Lake of Bays district, on B. papyrifera, 10196.
Cultural characters: (Pl. I, Fig. 7; Pl. II, Figs. 25 and 26).
Growth characters. Growth rapid, plates covered in two weeks. Advancing zone even, raised aerial mycelium extending to limit of growth. Mat white, raised, loosely arranged, cottony-floccose, becoming collapsed, cottony-woolly in older part, with irregular thickenings giving lacunose effect, grown to top of Petri dish and extending over inner surface of lid in thick layer. Reverse unchanged for three to four weeks, then bleached. Odor strong, like Psalliota campestris. On gallic and tannic acid agars diffusion zones moderately strong, no growth on gallic acid agar, diameter 2.0-2.5 cm on tannic acid agar.
Hyphal characters. Advancing zone: hyphae hyaline, nodose-septate, 1.5-4.5 µm diameter. Aerial mycelium: (a) hyphae as in advancing zone; (b) fiber hyphae numerous, with walls thick and refractive, lumina apparently lacking, aseptate, rarely branched, 1.5-2.2 µm diameter. Submerged mycelium: hyphae as in advancing zone, up to 6.0 µm diameter.
Type of rot: white rot of broad-leaved or, rarely, coniferous trees, frequently found decaying sapwood and causing cankers of living trees (Campbell (43) ).
Descriptions of cultural characters: Davidson, Campbell, and Blaisdell (64); Humphrey and Siggers (92).

Taxon name: