DESCRIPTION

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Genus Kretzschmaria
Key to Taxa of Kretzschmaria
Accepted Taxa
List of Names
Bibliography


Jack
Yu-Ming Ju
Michael J. Adams

 Stromata clavate, turbinate, obconical, peltate, discoid, restricted-pulvinate, or effused-pulvinate, usually gregarious, discrete, densely aggregated, or fused into crust, bearing umboes or spines on top in certain species, attached to substrate by simple or branched stipes or by narrow connectives, with entire or crenate, thick or thin margins; mature stromata lacking KOH-extractable pigments; surface plane or with inconspicuous perithecial mounds, smooth or with major cracks or scales; carbonaceous tissue forming a thick crust immediately beneath surface; tissue between and beneath perithecia whitish or grayish, coriaceous or woody, usually darkening and disintegrating.

Perithecia spherical to obovoid, distributed monostichously only on upper part of stromata.

Ostioles higher than stromatal surface and with openings finely papillate, coarsely papillate, or conical.

Asci eight-spored, cylindrical, stipitate, fugacious or persistent, with apical ring tubular, amyloid.

Ascospores brown, dark brown, or blackish brown, unicellular, ellipsoid or fusoid, inequilateral, with acute, narrowly rounded, or broadly rounded ends, with straight or sigmoid germ slit spore-length to much less than spore-length on less convex side; perispore indehiscent in 10% KOH; epispore smooth.