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Page number:1112 
Description type:Non-original description 
Description:Lasiosphaeria ovina (Pers. : Fr.) Ces. & de Not., Comm Soc Critt Ital 1:229. 1863. Figs. 24-45
Sphaeria ovina Pers., Syn Meth Fung 1:71. 1801.
Sphaeria ovina Pers. : Fr., Syst Myc 2:446. 1823.
Leptospora ovina (Pers. : Fr.) Fuckel, Symb Myc 23-24:143. 1870.
= Lasiosphaeria ovina (Pers. : Fr.) Ces. & de Not. var. aureliana Fairman, J Myc 10:229. 1904.
= Lasiosphaeria chrysentera Carroll & Munk, Mycologia 56:83. 1964.
This nomenclature is not complete.
Lectotype: Switzerland (possibly). Hb. Pers., 910.269-84, L10261 No. 12 (as Sphaeria ovina Pers., L).
Ascomata ampulliform to ovoid, rarely obpyriform, papillate, 360-620 µm diam, 380-680 µm high, numerous, scattered to gregarious, superficial; young as-comata tomentose, white, tomentum becoming tightly appressed, crust-like and cream to brownish-gray with age, occasionally areolate, tomentum then partially wearing away and forming a thin, waxy, grayish coating, finally tomentum completely worn away and ascomata appearing glabrous and black; neck conical, glabrous, black. Ascomatal wall of textura angularis in surface view, commonly containing globular, refractive crystals in squash mounts, in longitudinal section 3-layered, 42.5-86 µm thick, inner layer pseudoparenchymatous, 8-9.5 µm thick, composed of 4-6 layers of elongate, flattened, hyaline to pale brown cells, middle layer pseudoparenchymatous, 16.5-35 µm thick, composed of 5-8 layers of polygonal to angular, pale brown cells, outer layer prosenchymatous, 18-41.5 µm thick, composed of several to few layers of hyphae depending on age of ascomata, hyphae 1-3 µm wide, hyaline to pale brown, septate, thin-walled. Ascomatal apex with periphyses. Centrum with yellow to yellowish-orange or rarely greenish-yellow pigments that quickly diffuse in water. Paraphyses filiform, 1.5-5.5 µm wide, longer than asci, hyaline, numerous, septate, unbranched, persistent, contents rarely containing blue pigments in fresh specimens only. Asci cylindrical, 140-250 x 12-23 µm, medium-to long-stipitate, stipe 30-85(-120) x 3-6.5 µm, numerous, unitunicate, thin-walled, apex truncate; ring narrow, shallow, refractive; subapical globule large, 3.5-6 µm diam, smooth to verrucose, with 8, biseriate to tetraseriate ascospores. Ascospores cylindrical, ends rounded, 35-55(-60.5) x 3-6 µm [45.5 ± 4.5 x 4.5 ± 0.5], straight when first produced, hyaline, aseptate, bipolar appendages occasionally present, 5.5-12 µm, gelantinous, spike-like or awl-like, evanescent; becoming slightly sigmoid or geniculate, lower one-third to one-quarter bent 45° or less, appendages rarely present at this stage; after liberation from the ascus up to 7-septate or rarely 9-septate, each cell with a single globose, refractive oil droplet; finally becoming yellowish, yellowish-brown or pale brown with age, sometimes constricted at clamps and appearing worm-like, occasionally producing phialides directly from the ascospore.
Colonies on WA moderately slow-growing, 21-40 mm diam in 21 d, moderately fast-growing on CMA and PDA, covering the CMA plate in 21 d and the PDA plate in 28 d, silky on WA and CMA, wooly on PDA, becoming hispid with long, erect, white hairs composed of agglutinated, thin-walled hyphae, mat appressed on WA and CMA, appressed to aerial on PDA, hyaline on all media, becoming whitish to grayish-yellow (4A1-4B4) on PDA; margin even in all media, appressed, hyaline; reverse same as the mat in all media; anamorph produced abundantly over entire mat on WA and CMA and sparsely at the margin on PDA within 14 d.
Hyphae largely undifferentiated, 1-4 µm wide, thin-walled, hyaline. Conidiogenous cells phialides, produced laterally or occasionally terminally, delimited by a basal septum, monophialidic or sometimes polyphialidic, obclavate to lageniform, 6.5-16.5 x 2.5-3.5 µm at widest part, hyaline to pale brown, constricted below the collarette, 0.5-1.5 µm below collarette; collarette minute, flaring, same color as phialide. Conidia pyriform, truncate at base, 3-4 x 2-3 µm, hyaline, produced enteroblastically, aggregated in slimy heads; slightly larger blastoconidia also commonly produced directly from hyphae or branches, branches produced laterally, not delimited by a basal septum, extremely short to long, cylindrical, 1.5-24 x 1-3 µm at widest part, hyaline, without collarette; blastoconidia subglobose to pyriform or occasionally obclavate, 3-4.5(-6) x 2.5-3.5 µm, hyaline.
Substrate.. On dead, decorticated deciduous trees.
Distribution.. Canada, Costa Rica (as L. chrysentera Carroll & Munk), Denmark, England, France, Germany, New Zealand, Philippines, Russia, Switzerland, USA.
Specimens examined.. Canada. Ontario: Granton, on rotten wood, 23 Aug 1895, J. Dearness, (NY). Costa rica. Vulcan Irazu, rough road, second bridge from San Jose, on wood, 22 Jun 1962, G. Carroll 85 (holotype of Lasiosphaeria chrysentera, NY; isotype, G. Carroll herbarium).
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