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Page number:139 
Remarks (internal):Grandinia spathulata is associated with a white rot (Gilbertson & al. 1974; Ginns 1986a) of woody angiosperms and gymnosperms. It is common and widely distributed throughout the North American continent (Miller & Boyle 1943; Gilbertson et al. 1974, 1975; Gilbertson & Lombard 1976; Lindsey & Gilbertson 1978; Ginns 1986a; Gilbertson & Blackwell 1987). From Table 7 one can see that only G. spathulata and Schizopora paradoxa both produce two-celled drepanocysts in culture. Hassan Kasim & David (1983, p. 144) also observed malocysts in their cultures of G. spathula~a. It is possible that G. spathulata represents a species complex. Cultures from angiospermous wood are slightly different from those found on gymnospermous wood and are excluded from the description above.  
Description type:Culture description 
Description:GRANDINIA SPATHULATA (Schrad.: Fr.) Jülich
Mats white, thin, some isolates around inocula slightly raised, downy, then becoming raised, subtomentose to tomentose toward margins, finally near margins thinner and appressed, but in other isolates appressed, subfelty to silky throughout at 2 wk, by 6 wk white, around inocula moderately thick, appressed to slightly raised, felty to subtomentose, then thinner and becoming subfelty to downy toward margins, occasionally raised and arachnoid at margins, rarely isolates raised and woolly throughout; margins even, appressed; no odor or agar discoloration at 2 and 6 wk; not fruiting by 6 wk.
MEA (tr-)20-30;(46-)58-73(-90); TAA + or 0-tr; GAA + or ++++, 0; TyA -, 0-tr; 0-tr(-20)
Microscopic characters: Marginal hyphae 2-4 µm diam, thin walled, nodose septate, sparsely branched, branches arising opposite, just below clamps, or occasionally from clamps. Submerged hyphae 1.5-4 µm diam, thin walled, nodose septate, moderately branched. Aerial hyphae similar to submerged hyphae except often encrusted with large, coarse, hyaline crystals. Cystidia (Fig. 47b) globose to oblong jr clavate, 15-30 x 6-18 ?m, thin walled to slightly thick walled, sometimes with a short narrow stalk, terminal, clamped at base, often encrusted with coarse, hyaline crystals, numerous in aerial mats at 2 and 6 wk. Drepanocysts (Fig. 47a) clavate, two-celled, curved, 10-15 x 5-7 µm, thin walled, with a slender stalk, terminal, clamped at base, with terminal cell that usually stains deeply in phloxine, scattered to numerous in aerial and submerged mats at 2 and 6 wk.
Sexuality: Tetrapolar (Hassan Kasim & David 1983, p. 144).
Cultural description: Hassan Kasim & David (1983, p. 144).
Species code: 2. 3c. 13. 31b. 32. 36. 38. 45. 47.55. 60.
 
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