Gyromitra leucoxantha (Bres.) Harmaja
no common name
Discinaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Discinaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Species Information
Summary:
Also listed in Morels etc. category. Features include irregularly cup-shaped to wavy-flattened-wrinkled fruitbody that is yellow-ocher or yellow to orange-brown to yellow; underside that is whitish and downy; distinct fluted stem usually buried in ground; growth under conifers; and microscopic characters including rough spores with a projection at each end that is two-pointed at maturity.
Microscopic:
spores 25.9-31.1 x 11.1-13.9 microns, subfusoid to fusoid [somewhat spindle-shaped to spindle-shaped], distinctly roughened to reticulate, colorless, apiculus prominent 1.5-2.8 microns long "with depressed (concave) apiculi at maturity, submature spores with slight apical thickenings, truncate knobs, or small depressed apiculi", with 1 to 3 droplets, one large central round to elliptic one and 0-2 smaller ones at the ends; asci 19.2-22.3 microns wide; paraphyses 6.4-9.0 microns wide at tip, club-shaped, gradually enlarged to abruptly swollen at tip, "brown, contents coarsely granular", (Abbott), spores 28-32 x 14-16 (not including appendages), elliptic, finely punctate and weakly reticulate, colorless, with 1 droplet, usually with appendage on each end, each with 2 projections; asci 8-spored, 280 x 17 microns, inamyloid; paraphyses "cylindric, tips slightly clavate with granular contents", (Breitenbach), spores 30-36 x 12-15 microns, (Dennis), spores 26-31 x 10-13 microns in water (excluding appendages), elliptic, smooth to coarsely wrinkled, colorless, IKI-, appendages one at each end, broad, truncated, usually centrally depressed, 1.8-3.6 microns long, (Ginns), spores 30-40 x 12-18 microns with two-humped tips (Trudell)
Notes:
Gyromitra leucoxantha is found at least in BC, AB, and UT, (Abbott), and OR and ID, (Larsen). It has been reported from WA by Andrew Parker, pers. comm., as well as from ON and PQ, (Ginns), and from eastern North America and Europe (including United Kingdom and Italy,) (Abbott).
Habitat and Range
SIMILAR SPECIES
Gyromitra ancilis has its fresh upper surface colored orange-brown to red-brown or dark brown, and spore apiculi are pointed rather than depressed (concave-truncate appearing as if there are two points instead of one), (Abbott). Gyromitra olympiana spores may develop a broad blunt thickening at both ends. Gyromitra melaleucoides spores are smaller and lack apiculi. Spores of Gyromitra ancilis, Gyromitra olympiana, Gyromitra leucoxantha, and Gyromitra melaleucoides should be mature spores from a spore deposit when a comparison is made (Michael Beug, pers. comm.).Habitat
single to gregarious on soil, litter, or woody debris in coniferous woods, May 10 to June 8 in BC, (Abbott), single to gregarious under larch and spruce, shortly after snowmelt, (Breitenbach), on soil in woods of mixed hardwood and coniferous species, in May and early June, (Ginns)
Status Information
Synonyms
Synonyms and Alternate Names:
Apiocrea chrysosperma (Tul.) Syd. & P. Syd.
Hypomyces boletinus Peck
Sepultaria arenosa (Fuckel) Boud.