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Species Information
Summary: Also listed in Polypores category. Features include 1) resupinate growth on wood, especially hardwood, 2) a fruitbody that is white to yellowish, with a poroid or sometimes maze-like toothed surface, 3) spores that are elliptic, smooth, inamyloid, and colorless, 4) capitate cystidia in the hymenium, and capitate hyphal ends in the subiculum and outer edges of the pores, and 5) a hyphal system that is either monomitic (with generative hyphae often thick-walled) (Hallenberg) or pseudodimitic (Langer), the hyphae with clamp connections. Schizopora radula was separated from Schizopora paradoxa in 1983, and previous descriptions of Schizopora paradoxa refer to both species. Langer(1) and Hallenberg(5) separate them slightly differently, see SIMILAR. With respect to Schizopora radula and Schizopora paradoxa, "Usually there are no problems in distinguishing the two species just by a look at the hymenophore (25 X) - at least for C. and N. European specimens. However, there are also specimens which are difficult to interpret, especially among perennial ones or when the fruitbody has grown on a vertical substrate. In these cases the microstructure is distinctive.", (Hallenberg).
Schizopora radula has been found in BC, SC, Argentina, Denmark, France, Norway, Spain, Turkey, and Taiwan, (Langer). It has been found in BC, Austria, Denmark, and Sweden, (Hallenberg).
Fruiting body: resupinate, cream-colored - ochraceous - pale reddish brown; poroid, pores of variable size, 1-3 per millimeter, "angular, in some specimens strongly lacerate", "pore walls thin, in old specimens sometimes rather thick", (Hallenberg), resupinate, irpicoid to poroid, beige with light orange tinge, 1-4 pores per millimeter, pore walls up to 0.01cm thick and pores about 0.2cm deep; subiculum apart from pores up to about 0.01cm thick, (Langer), tightly attached; pores 2-4 per mm, angular but becoming elongated or +/- labyrinthine; flesh soft, fibrous, cream; spore deposit white, (Buczacki)
Microscopic: SPORES 4-5 x 2.8-3.8 microns, elliptic; CYSTIDIA: capitate cystidia frequent; HYPHAE monomitic, hyphae more or less thick-walled, regularly with clamp connections; "some hyphal endings in the trama are - in limited parts - very thick-walled, with a narrow, but unevenly wide lumen"; hyphal endings in pore mouth generally thin-walled, much incrusted, (Hallenberg), SPORES 4-5.5 x 3-4 microns; BASIDIA 4-spored, 13-18 x 3.5-5 microns; CYSTIDIA capitate in the hymenium and also capitate hyphal ends in the subiculum and in the outer edges of the pores, the hyphal ends in the outer edges of the pores incrusted with small crystal masses; HYPHAE pseudodimitic: skeletoid hyphae 3.5-4.5 microns wide, walls up to 1.5 microns thick, generative hyphae 2-4 microns wide, walls up to 1 micron thick; primary septa of all hyphae with clamp connections, (Langer), SPORES 3-4.5 x 2-3 microns, elliptic to nearly round, smooth, inamyloid; CYSTIDIA sparse, clavate, projecting, heavily encrusted; HYPHAE dimitic, (Buczacki)
Habitat / Range
collections examined from Abies (fir), Alnus (alder), Castanea (chestnut), Fraxinus (ash), Quercus (oak), (Hallenberg), on Eucalyptus, Populus, Sorbus (mountain-ash), Quercus, (Langer), all year (Buczacki)
Similar Species
Schizopora paradoxa has 1) a hydnoid-denticulate-labyrinthiform spore-bearing surface, 2) spores measuring 5-5.5 x 3.3-4 microns, 3) capitate hyphal endings that are few in number, and 4) a dimitic hyphal system, the skeletals with a narrow lumen, whereas Schizopora radula has 1) a poroid spore-bearing surface, with angular pores, sometimes lacerate, 2) spore measuring 4-5 x 2.8-3.8 microns, 3) capitate hyphal endings that are frequent in the hymenium and in the pore mouths, and 4) a monomitic hyphal system (generative hyphae in S. radula are thick-walled and could be mistaken for skeletal hyphae but the cell lumen is wide and the septa have clamp connections), (Hallenberg), Schizopora paradoxa has 1) a white to yellowish fruitbody, 2) spores measuring 5.5-6.5 x 3.5-4.5 microns, and 3) hyphal ends from the outer edges of the pores that are obtuse, whereas Schizopora radula has 1) an orange-tinged fruitbody, 2) spores measuring 4-5.5 x 3-4 microns, and 3) hyphal ends from the outer edges of the pores that are capitate, (Langer).
