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

Steccherinum ochraceum (Pers.: Fr.) Gray
ochre spreading tooth
Meruliaceae

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi

© Jim Riley  Email the photographer   (Photo ID #65775)

E-Flora BC Static Map
Distribution of Steccherinum ochraceum
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Species Information

Summary:
features include 1) growth on hardwood or less often conifer wood, 2) fruitbodies resupinate, or with a cap (especially on vertical surfaces, shelf-like or bent outward from resupinate surface), and sometimes even with a stem, 3) cap when present whitish, grayish, ocherish or grayish orange, tomentose-velvety, concentrically grooved, sometimes zoned, and often shingled, 4) spore-bearing surface pale ochraceous to salmon, with conic to almost cylindric spines, the margin of resupinate parts scalloped, velvety, whitish, without rhizomorphs, 5) spores small, elliptic, smooth, inamyloid, and colorless, 6) cystidia cylindric, projecting, thick-walled, and encrusted, originating in the trama, and 7) hyphal system dimitic, the generative hyphae with clamp connections; found in BC, WA, OR, ID, also MB, NS, ON, PQ, AK, AL, AR, AZ, CA, FL, GA, IA, IL, IN, KY, LA, MD, ME, MI, MN, MO, MS, NC, NH, NJ, NY, OH, OK, PA, SC, TN, TX, VA, WI, WV, (Ginns), Denmark, Norway, Sweden, (Eriksson), Switzerland, Asia, (Breitenbach), apart from Africa with a very wide distribution on either side of the equator, (Maas Geesteranus)
Fruiting body:
effused, "usually small to medium sized, resupinate or with revolute margin" (not distinctly capped or seriate), reflexed part 0.5-1.5cm with the upper side smooth or somewhat zoned, velvety; spore-bearing surface odontioid, pale ochraceous to salmon, acu
Microscopic:
SPORE 3.2-3.5(4) x (2)2.2-2.5 microns, elliptic, smooth, thin-walled; BASIDIA 4-spored, 15-20 x 5 microns, subclavate, with basal clamp connection; CYSTIDIA (pseudocystidia) numerous, especially in the spines, but occurring frequently in the hymenial layer between the spines, "strongly encrusted in the widened upper part, generally more than 100 microns long" and in the encrusted part 7-10(12) microns wide, blunt, projecting 20-30 microns; HYPHAE dimitic, true generative hyphae 2.5-3.5 microns wide, more or less branched, thin-walled, with clamp connections, in the spine trama parallel together with skeletal hyphae and/or pseudocystidia, in the subiculum mixed with skeletal hyphae, which are 2-2.5 microns wide, thick-walled, without septa, "and bound together by richly branched, clamped generative hyphae with thickened walls", (Eriksson), SPORE 3.5-4 x 2-2.5 microns, oval, smooth, inamyloid, colorless, some with one droplet; BASIDIA 4-spored, 15-27 x 3.5-4 microns, narrowly clavate, with basal clamp connection; CYSTIDIA (skeletocystidia) 5-10 microns wide, greater than 100 microns long, usually abundant and projecting beyond the hymenium, +/- cylindric, "thick-walled, incrusted"; HYPHAE dimitic, generative hyphae 2-3 microns wide, thin-walled, with clamp connections, skeletal hyphae 3-7 microns wide, thick-walled, (Breitenbach), SPORE (3.1)3.4-4.5(4.7) x (1.6)1.8-2.5(2.7) microns, elliptic, adaxially flattened, smooth, colorless, with small oblique apiculus; BASIDIA 4-spored, 11-15 x 3.6-5.5 microns, clavate, with basal clamp connection, sterigmata 2.7-3.5 microns long; CYSTIDIA 4-10 microns wide, "of tramal origin, abundant to scarce, evenly distributed over spine", somewhat projecting, encrusted, cylindric to somewhat fusiform in distal part, with obtuse apex, (Maas Geesteranus), spore print white (Lincoff(2))

Habitat / Range

on fallen branches and decaying wood of hardwoods and conifers, (Maas Geesteranus), on hardwood, Corylus (hazel), Fagus (beech), Quercus (oak), Tilia (basswood), Ulmus (elm), (Eriksson), on dead hardwood (especially Fagus), more rarely conifer wood, with or without bark, "resupinate forms principally on trunks and branches lying on the ground", capped forms on standing trunks; throughout the year, (Breitenbach), on a variety of hardwoods, also Cupressus macrocarpa (Monterey Cypress), Juniperus virginiana (Eastern Juniper), Picea pungens (Blue Spruce), Pseudotsuga menziesii (Douglas-fir), (Ginns), June to October, sometimes year-round, (Lincoff(2))

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

Species References

Eriksson(7), Maas Geesteranus(2), Breitenbach(2)*, Lincoff(2)*, Lincoff(1)*, Ginns(5), Buczacki(1)*

References for the fungi

General References