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From the — Key to the genera of the operculate cup-fungi (PEZIZALES) of the Pacific Northwest and Rocky Mountain Region:
Pulvinula carbonaria (Fuckel) Boud.
CUP 0.1-0.4 cm wide, at first spherical, becoming platter-shaped to disc-shaped, flat to slightly concave, pale orange, the outside a little paler than the spore-bearing surface, margin even or wavy. STEM none. HABIT and HABITAT gregarious or crowded on burned ground that has been overgrown with mosses. DISTRIBUTION at least OR, CA, MT. MICROSTRUCTURES spores up to 15-18 um in diameter, round, smooth, colorless, containing one oil droplet that almost fills the spore; asci reaching 225 × 18-20 um; paraphyses threadlike or slightly enlarged at tip, reaching 3-4 um wide at tip, strongly curved or hooked and extending far beyond the asci.
Pulvinula convexella (P. Karst.) Pfister
CUP 0.3-1.2 cm wide, top-shaped to cushion-shaped to disc-shaped, orange to pink to scarlet, margin smooth and often strongly wavy, exterior lighter in color, to whitish pink. STEM none. HABIT and HABITAT single to gregarious or in clusters on bare sandy ground or burned ground or among mosses. DISTRIBUTION at least OR, AK, CA, CO, MT. MICROSTRUCTURES spores 13-18 um in diameter, round, smooth, colorless, with one or several droplets; asci 8-spored, 200-250 × 18 um; paraphyses slender, tips bent over like a cane and not thickened, not septate but forked.
Just a couple ideas…
Created: 2008-06-25 18:35:45 PDT (-0700)
Last modified: 2016-07-18 08:27:54 PDT (-0700)
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