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Species MB501111 Hoornsmania pyrina Crous 2007   Bibliography: Crous, P.W., 2007, Fungal Planet no. 11: (more info) Year of publication: 2007 Status of the name: basionym; legitimate MycoBank's opinion: currently used Classification: Fungi, Hyphomycetes, Hoornsmania Obligate synonym(s): none Anamorph-teleomorph connection: unknown Taxonomic synonym(s): Ordered by epithet name none Descriptions: Latin diagnosis Conidiophora solitaria, erecta, brunnea, ex hyphis superficialibus oriunda, 1-6-septata, 40-120 x 4-6 µm. Cellulae conidiogenae 20-30 x 5-7 µm, brunneae, leves vel exigue verruculosae, elongato-ellipsoideae vel fusoideae, 1-2 cicatricibus truncatis, modice inspissatis et pigmentatis neque refringentibus praeditae. Conidia brunnea, levia vel exigue verruculosa, late ellipsoidea vel modice fusoidea, catenas ramosas formantia, (18-)20-22(-25) x (9-)10-11(-15) µm; hila 2-4 µm diam, modice fuscata, inspissata neque refringentia. Original description Hyphomycetes. Mycelium superficial, consisting of branched, brown, septate hyphae, 3-8 µm wide, colonising perithecia of Neonectria ditissima, visible as a grey-brown mass on perithecia. Conidiophores solitary, erect, brown, smooth to finely verruculose, arising from superficial hyphae, 1-6-septate, 40-120 x 4-6 µm, giving rise to 1-2 secondary branches; secondary branches aseptate, 15-30 x 4-6 µm, giving rise to conidiogenous cells. Conidiogenous cells 20-30 x 5-7 µm, brown, smooth to finely verruculose, elongate-ellipsoid to fusoid, widest in the upper third, tapering gradually to the base, but abruptly to the apex, which is clavate with 1-2 truncate loci, somewhat thickened and darkened, but not prominently refractive, 2-4 µm wide. Conidia brown, smooth to finely verruculose, broadly ellipsoidal to somewhat fusoid, occurring in branched, acropetal chains, (18-)20-22(-25) x (9-)10-11(-15) µm; hila 2-4 µm diam, somewhat darkened, thickened, but not refractive; conidia aseptate, but developing up to 2 septa with age, conidium body collapsing once mounted in water or lactic acid. Etymology Named after its host plant, Pyrus malus. Date entered: 05/06/2006 02:17:38 Entered by: Mycobank administration Illustration #1: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #2: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #3: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #4: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #5: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #6: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #7: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #8: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #9: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #10: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #11: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #12: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #13: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #14: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #15: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #16: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #17: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #18: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #19: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #20: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #21: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #22: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #23: Description: Conidia of Hoornsmania pyrina Author(s): P.W. Crous Illustration #24: Description: Conidiophores of Hoornsmania pyrina Author(s): P.W. Crous Illustration #25: Description: Conidiophores of Hoornsmania pyrina Author(s): P.W. Crous Illustration #26: Description: Conidiophore and conidia Author(s): P.W. Crous Illustration #27: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Illustration #28: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Illustration #29: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Illustration #30: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Illustration #31: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Illustration #32: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Illustration #33: Description: Perithecia of Neonectria ditissima with Hoornsmania pyrina Author(s): P.W. Crous Type specimen Herbarium number: CBS H-19769 Collected by: P.W. Crous, 2005 Substrate: Neonectria ditissima, perithecia, on twigs of Malus sp. Location: Netherlands, Utrecht Province, Bilthoven, Evert Cornelislaan