Apodospora, a new genus of the Sordariaceael - ASCOfrance

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892 CANADIAN JOURNAL OF BOTANY. VOL. 48. 1970rubido-brunneis, haud translucidis. Ascis octosporis,cylindraceis, superne late rotundatis,annulo claro incrassato in apice sito praeditis,inferne in stipitem longissimum gracilem crocabasi praeditum paulatim attenuatis, 250-350 X13-1 6 p. Paraphysibus filiformibus, septatis,hyalinis, numerosis, cum ascis mixtis, 3-4 p diametris.Ascosporis uniseriatis, plerumque ascoin parte superiore obliquis et in parte inferioreparallelis et minus stipatis, 20-25 X 9-11 p,oblongo-ellipsoideis, uniguttulatis, deinde olivaceo-brunneis,postremo paene nigris et haudtranslucidis, foramine germinali hyalino, rotundo,in apice sito, 2 p diametro, in parvotuberculo posito praeditis, strato mucoso continuo,hyalino, crasso 3-5 p, super foramen germinalenon interrupt0 circumventis. Mycelio inagaro cano-brunneo, aerio; phialidibus numer-osis in hyphis sparsis. Phialidibus pallido-brunneis,apice dilato praeditis. Phialosporis parvis,ovatis, in globo in apice phialidis dispositis.TYPUS: in fimo Alcis americatzae, Twp. lB,Little White River, Algoma D., Ontario, Canada,15 Sept. 1956, Cain, TRTC 32365. In Universityof Toronto Cryptogamic Herbarium.Perithecia black, immersed or with upper conicalpart erumpent between fibers of substratum,dispersed or loosely aggregated in small clusters,500-600 X 400450 p, broadly pyriform to subglobose,smooth, bare except for fine hyphalfilaments by means of which they are closely adherentto fibers of substratum, constricted aboveto form a very short, stout, conical neck with acircular ostiole, 35 p in diameter at apex. Perithecialperidium dark reddish-brown, 2540 p inthickness, membranaceous to slightly coria-FIGS. 1-2. Apodosporn sitnulans. Fig. 1. Two perithecia.X 80. Fig. 2. Cells in upper part of peridiurnshowing areas of elongated cells, surface view. X 700.FIGS. 3-5. A. simulans. X 700. Fig. 3. Cells of lowerpart of peridiurn, surface view. Fig. 4. Two asci with veryyoung ascospores. Fig. 5. Immature ascospores.
CMN AND MIRZA: APODOSPORA 893ceous, with cellular structure obscure. Cells inlower part of peridium very thin-walled, angular,reddish-brown, 5-15 pin diameter. Cells in upperpart angular, polygonal, arranged in platesseparated by narrow zones of linear cells, withwalls slightly thickened, dark reddish-brown,very opaque. Asci eight-spored, cylindrical,broadly rounded above, with a distinct thickenedring in apex, tapering gradually below into avery long slender stipe with a crozier at the base,250-350 X 13-1 6 p. Paraphyses filiform, septate,hyaline, abundant, mixed with asci, 3-4 indiameter. Ascospores uniseriate, usually lyingoblique to ascus in upper part and parallel andless crowded in lower part, 20-25 X 9-11 p,oblong-ellipsoidal, with one large refractive globule,becoming olivaceous-brown and finallynearly black and opaque, with hyaline, circular,apical germ pore measuring 2 p in diameterlocated in a small, tubercular projection, surroundedby a continuous, gelatinous, hyalinesheath measuring 3-5 p in thickness and notinterrupted over germ pore. In culture producingcolonies with gray-brown aerial mycelium withabundant phialides scattered on hyphae. Phialideslight brown, with flaring collarette. Phialosporessmall, ovate forming globose mass at apexof phialide.ETYMOLOGY: Latin, simulans = imitating, fromthe superficial resemblance to Sordaria jimicola(Rob.) Ces. & de Not.HABITAT: on dung of moose. A single collectionrecorded on cow dung.SPECIMENS EXAMINED: All specimens collectedon moose dung by Cain unless stated otherwise.CANADA: ONTARIO: Algoma D.: Twp. 1 B, LittleFIG. 6. A. sirnulans. X 700. Asci with immature, partiallycolored ascospores.FIGS. 7-8. A. simulans. X 700. Fig. 7. Asci withmature ascospores. Fig. 8. Mature ascospores.
Page 1: Apodospora, a new genus of the Sord

Apodospora, a new genus of the Sordariaceael - ASCOfrance

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