Summary:
{See also Morels Table.} Features include conic cap with vertical ridges, frequent sunken horizontal ridges, and pits, the ridges dark brown to nearly black, the pits primarily vertically elongated, pale tan to brownish yellow, and finely tomentose; stem equal or sometimes basally subclavate, whitish and finely mealy with whitish granules, the ridges and folds not prominent; trough between cap and stem not deep; fruiting outside of burn areas especially under hardwoods, and microscopic characters. According to Kuo(6), this species corresponds to PS A (natural black morel) in Pilz(2), and to Morchella angusticeps in the 1995 edition of Weber(3). The description is derived from Kuo(6) except where noted.

Microscopic:
spores 22-36(40) x 14-20(25) microns, elliptic, smooth, contents homogeneous; asci 8-spored, 225-300 x 17.5-22.5 microns, cylindric, colorless in 2% KOH; paraphyses 150-250 x 7.5-17.5 microns, cylindric, colorless in 2% KOH, "apices rounded to subclavate, clavate, or widely fusiform", septate; elements on sterile ridges 75-160 x 12.5-27.5 microns, with colorless to brownish contents in 2% KOH, septate, "terminal cell clavate (sometimes strikingly so), subcapitate or widely subfusiform"

Notes:
The collections examined are from OR; Michael Beug''s attached photographs from WA. Although not specifically documented yet, this species is likely to occur in BC and more widely in the Pacific Northwest.

Synonyms and Alternate Names:
Dasyscyphus cerinus (Pers.) Fuckel
Lachnella cerina (Pers.) W. Phillips