E-Flora BC: Electronic Atlas of the Flora of British Columbia

Summary:
Features include 1) an amber to dark red-brown, firm-gelatinous, obconic to more irregular fruitbody with a central attachment, 2) growth on hardwood in loose clusters without much anastomosis, and 3) microscopic characters.

Klett(2) designates Bandoni 945 and 2743 from BC (the latter deposited at University of British Columbia as E. recisa), as well as six of his own collections from WA as Exidia crenata (Schw.) Fr., but says that he cannot say whether the latter species is the same as E. recisa of Europe. E. recisa has been reported from OR (Zeller). There are collections from BC at the University of British Columbia by R. Bandoni and others. The distribution of E. recisa includes ID, AB, NS, ON, PQ, YT, CA, GA, LA, MD, MN, NC, and OH, (Ginns), North America, Europe including Switzerland, and Asia (Breitenbach), Mexico and Germany, (Lowy), and the Philippines (Raitviir).

Fruiting body:
about 0.4cm high and up to 1cm in diameter, when fresh inflated, somewhat fan-shaped in vertical cross-section, consistency soft-gelatinous; pale liver-brown, drying blackish; surface wavy to brain-like, drying with distinct folds, spore-bearing surface bald, non-spore-bearing surface drying dull and pruinose; centrally attached, substipitate (almost with a stem), (Ginns(9)), 0.3-1.5(2)cm tall, 0.5-3cm wide, irregularly conic to plate-shaped or conchate (like an oyster-shell) and lobed, flesh gelatinous and tough, limply elastic, and dry, when dry fruiting body forms only inconspicuous brown crust; amber to dark red-brown; upper spore-bearing surface "almost smooth or undulating to honeycombed-wrinkled, slightly shiny, without small warts", underside slightly rough and dull, (Breitenbach), "lobate or pileate, usually in clusters, but with little anastomosis, firm-gelatinous, yellowish brown to deep cinnamon brown, drying black", (Martin), spore deposit white (Buczacki)

Microscopic:
spores 9-14 x 3.5-4(5) microns, cylindric with broadly rounded ends in face view, in side view somewhat curved, smooth, inamyloid, colorless, thin-walled; basidia 4-spored, (14)17-19 x 8-9 microns, narrowly clavate when mature, broadly ovoid, ellipsoid, or narrowly clavate when younger, sessile, with a basal clamp connection, longitudinally and cruciately septate, with 4 elongated epibasidia; spore-bearing surface about 30 microns thick of immature and mature basidia, and colorless dendrohyphidia; on non-spore-bearing surface there is in vertical sections from dried specimens "an external layer 15-30 microns thick, impregnated with a yellow-brown, resin-like substance, and comprised of rather closely arranged dendrohyphidia (similar to those in the hymenium)"; context of colorless thin-walled hyphae 1.5-3.5 microns wide, with clamp connections, and having some segments with a roughened surface due to minute amorphous deposits, these hyphae being loosely woven and embedded in a gelatinous matrix, (Ginns(9)), spores 14-15 x 3-3.5 microns, cylindric, allantoid (curved), smooth, inamyloid, colorless, often with several drops, also conidia 5-6 x 1.5-2 microns; hypobasidia 8-15 x 6-10 microns, nearly spherical to pyriform [pear-shaped], longitudinally septate, usually with 4 finger-like basidia; hyphae 1-3 microns wide, gelatinized, septa with clamp connections, (Breitenbach), spores 10.5-14 x 3-5 microns, allantoid, colorless, white in mass; probasidia 10-16 x 4-11 microns, elongate, becoming cruciate-septate; hymenium unilateral, mostly confined to inferior parts, smooth, the sterile upper parts covered with minute scale-like patches, (Martin)