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Species Information
Summary: Features include tiny, nearly spherical fruitbodies that open to become urceolate to turbinate, the exterior dark olive-brown or reddish brown to black, and striate to wrinkled, the spore-bearing area whitish to grayish or pale greenish, the stem short, clustered growth in spring on cankered areas near the base of Prunus saplings, conspicuous conidial state, and microscopic characters.
Collections were examined from BC, ON, PQ, MN, NH, and NJ, (Groves).
Upper surface: apothecia [sexual fruitbodies] 0.03-0.12cm across, 0.08-0.2cm high, at first nearly spherical, opening circularly and becoming urceolate [goblet-shaped] to turbinate; spore-bearing surface concave, whitish to grayish or pale greenish, more fleshy than the exterior; margin even or slightly fimbriate [fringed], inrolled when dry; conidial fruitbodies 0.02-0.06cm across, 0.05-0.08cm high, "erumpent, gregarious, cespitose or occasionally single", nearly spherical to ovoid, flask-shaped or cylindric, bald, olivaceous brown to black, consistency similar to that of the apothecia [sexual fruitbodies]
Flesh: consistency of fruitbody hard, brittle, coriaceous-waxy [leathery-waxy], more coriaceous-fleshy when moist
Underside: fruitbody exterior dark olive-brown or reddish brown to black; "more or less striate to wrinkled or rugose"
Stem: narrowed in lower part, with short stem
Microscopic: spores (40)45-60(70) x 1.5-3.0 microns, filiform [thread-like], straight or slightly curved, pointed at the ends, 3-septate to mostly 5-septate, more or less fasciculate in the ascus; asci 8-spored, (85)90-115(130) x (5.0)6.0-8.0(10.0) microns, cylindric to cylindric-clavate, tapering to a slender stem, pore turns blue with iodine; paraphyses 1.5-2 microns wide, filiform, colorless, septate, simple or branched, "tips not or very slightly swollen, not forming an epithecium"; conidia (10)12-18(25) x (1.5)2.0-3.0(3.5) microns, cylindric-fusoid, straight or slightly curved, colorless to yellowish green, 1-celled to 4-celled, pointed at the ends, conidiophores variable in length, 6-25 x 2.0-3.0 microns, cylindric-subulate, colorless, septate, simple or branched
Habitat / Range
"erumpent, densely gregarious and cespitose with up to 40 or more in a cluster but usually much less and occasionally single", "usually found in the spring or early summer on cankered areas near the base of Prunus saplings" (genus name italicized)
Similar Species
Godronia urceolus has collections listed through MyCoPortal from BC, OR, NS, ON, AK, CA, CO, GA, MA, ND, NH, NJ, NY, and VT, but it is unknown whether those identifying Pacific Northwest collections had access to descriptions of the full range of Godronia spp.
