06 September 1989, Volume 8 Issue Z1

    

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  THE GENUS PYTHIUM PN CHINA

  Mycosystema. 1989, 8(Z1): 1-110.

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  Fifty-four species of Pythium so far recorded from China are reviewed. The morphology,physiology, ecology, and taxonomy of the species found in China have been studied. Description, host orsubstratum, distribution, and discussions of every taxon are provided, and a key to the Chinese species isalso included. For ten recorded species no authentic material for comparison was obtained.
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  A REDEUMITATION OF THE SPECIES OF PILOBOLUS

  Mycosystema. 1989, 8(Z1): 111-133.

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  Nine species of Pilobolus were accepted by Zheng & Hu (in Tai, 1979). All of these werecollected and studied recently. Though they are distinguishable from each other, in this paper they areredelimitated as five species comprising nine varieties in order to achieve concordance with the other generaof the Mucorales where the existing species concept for classifying Pilobolus, including ours in the past,is too small and needs revising. The taxa now accepted are:Pilobolus crystallinus (Wigg.) Tode var.crystallinus;P. crystallinus var. hyalosporus (Boedijn) Hu & Zheng, comb. nov.;P. crystallinus var. kleinii(van Tieghem) Zheng &G.-q. Chen, comb. nov.;P. lentiger Corda var. lentiger;P. lentiger var. minutus(Speg.) Zheng &G.-q. Chen, comb. nov.;P. longipes van Tieghem;P. oedipus Mont.;P. roridus (Bolt.)Pers. var. roridus;P. roridus var. umbonatus (Buller) Hu &Zheng, comb. nov. A study of the diagnosesgiven in the literature of some synonyms, which were referred to different taxa by different authors, wasmade to determine their correct placement. Twelve names are listed here as doubtful since no diagnosescould be found or no conclusion could be drawn from the diagnoses. These include:Mucor obliquus Scop.,M. urceolatus Dicks., Pilobolus urceolatus Purt., P. pestis-bovinae Hallier (= P. hallierii Rivolta), P. nanusvan Tieghem, P. intermedius (Coem.) P. A. Karsten (= P. oedipus var. intermedius Coem.), P. pullusMassee, P. proliferens McVickar, P. ramosus McVickar, P. simplex McVickar, P. lentiger forma kleiniiReyn. &Laysa, and P. lentiger forma minutus Reyn. &Laysa.
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  THE STATUS OF THE GENUS Llanoa DODGE AND THE DELIMITATION OF THE GENERA IN THE UMBILICARIACEAE (ASCOMYCOTINA)

  Mycosystema. 1989, 8(Z1): 135-150.

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  A brief history and the current situation of generic classification in the lichenizedascomycete family Umbilicariaceae is considered. A revised family with two genera has been recognized bymost recent authors, but in recent years a monotypic genus Llanoa described by Dodge in 1968 has beenaccepted by some authors in addition to Lasallia and Umbilicaria. The type species of Llanoa, Umbilicariacerebriformis Dodge &Baker I=Llanoa cerebriforrnis (Dodge &Baker) Dodge], is very closemorphologically to Umbilicaria decussata (Vill.) Zahlbr., and the genus Llanoa Dodge therefore needed tobe reexamined and its status clarified on the basis of the type material. A reexamination showed the typespecies of Llanoa to be a synonym of the well-known Umbilicaria decussata, and so the monotypic genus Llanoa is a synonym of the genus Umbilicaria Hoffm. In addition, a cluster analysis based on 35 speciesand 52 morphological characters favoured the revised concept of the family.
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  A TAXONOMIC INVESTIGATION OF Penicillium CITRINUM VARIANTS BY BIOCHEMICAL AND ELECTR- OPHORETIC TECHNIQUES

  Mycosystema. 1989, 8(Z1): 151-158.

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  Two variants of Penicillium citrinum Thom were isolated from nature. One was white(complete lack of wnidial wlour) and the other nutritionally deficient (unable to utilize nitrate nitrogen).Physiological and biochemical characters and electrophoresis of protein patterns and zymograms wereused as an aid to the determination of the taxonomic status of these two variants. The results show thatboth the two variants are extremely similar to the normal strain, and so should not be treated as separatetaxa. It is appropriate to consider them as natural variants with no special taxonomic status.
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  SOME CLAVARIOID FUNGI FROM NORTHERN CHINA

  Mycosystema. 1989, 8(Z1): 159-174.

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  Clavarioid fungi (Basidiomycotiti, Aphyllophorales) from Jilin and Heilongjiang Provnces are described, with notes on systematic position xnd biogeography. Taxa discussed are placed in Clavaria, Lentaria. Multiclavula Pterula.Ramaria and Ramariopsis. Ramaria americana var. orientalis is proposed as new.
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  SPECIES OF PUCCINIA ON THE LILIIFLORAE IN CHINA

  Mycosystema. 1989, 8(Z1): 175-198.

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  Twenty-one species of Puccinia parasitizing families of the Liliiflorae in China arereported, of which two species are described as new, viz. P. lioui and P. oedopoda. All species are describedin full and accompanied by line illustrations. A key to the species on the Liliaceae is given.
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  A TAXONOMIC STUDY ON THE PUCCINIA SPECIES ON THE UMBELLIFERAE IN CHINA

  Mycosystema. 1989, 8(Z1): 199-216.

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  This is a preliminary result of the taxonomic study on the Puccinia that parasitize the plantfamily Umbelliferae in China. Nineteen species are described including 4 new records for China. All specimenscited except one are kept in HMAS, Beijing.
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  ADDITIONS TO THE GRAMINICOLOUS RUST FUNGI OF CHINA

  Mycosystema. 1989, 8(Z1): 217-220.

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  Five species of graminicolous rusts are added to those previously recorded from China.Two form species, Uredo calamagrostidis-emodensis S. X. Wei and Uredo agrostidis-myrianthae S. X. Wei,are described as new. Three species, viz. Puccinia arundinariae Schw., Uromyces archerianus Arth. &Fromme, and Uromyces dactyloctenii Wakef. &Hansf., are recorded for the first time from China. All thespecimens cited are kept in HMAS, Beijing.
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  TWO NEW RECORDS OF THE SMUT FUNGI FOUND IN CHINA

  Mycosystema. 1989, 8(Z1): 221-223.

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  Sporisorium arthraxonis (Pat.) comb. nov. on Arthraxon lanceolatus(Roxb.) Hochst. andSphacelotheca fagopyri H. &P. Syd &Butl. on Fagopyrum esculentum Moench. are described. These twospecies are new to China.
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  STUDIES ON THE GENUS PSEUDOCERCOSPORA IN CHINA I

  Mycosystema. 1989, 8(Z1): 225-240.

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  Sixty species of the genus Pseudocercospora found in China are reported. One new species,25 new combinations, and 3 new records are included here. Latin diagnosis, description and illustration ofthe new species P. alangii are given. Specimens examined, including the type of the new species, are depositedin HMAS.
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  MYXOMYCETES FROM CHINA Ⅱ: TWO NEW SPECIES OF TRICHIA

  Mycosystema. 1989, 8(Z1): 241-246.

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  Two new species of Trichia from China, Trichia heteroelaterurn and T. rnicrospora, are describedand illustrated by scanning electron micrograph (SEM), light micrograph (LM) and line drawing.The type of the former species is preserved in HMAS and the latter in HJAU
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  BRIEF REPORT ON THE THIRD CONGRESS OF THE SCIENTIFIC COUNCIL OF SMLL

  Mycosystema. 1989, 8(Z1): 247-250.

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  The Third Congress of the Scientific Council of SMLL was held in Beijing on 13-15 October 1988. Seven members of the Scientific Council of SMLL, including Prof. R. P. Korf of Cornell University, USA, were present at the meeting. Other participants were head of each research group of SMLL and the Director of theInstitute of Microbiology. All members of SMLL in Beijing also attended the meeting to listen to the scientific reports and a three-year work report of SMLL. Prof. Wei Jiang-chun and Prof. Zheng Ru-yong, Director and Deputy Director of the Scientific Council respectively, presided at the meeting. At the congress, Prof. Korf presented a lecture entitled "Discomycete systematics today: a look at some unanswered questions in a group of unitunicate Ascomycotina" andmade many valuable suggestions for the future work of the laboratory. Three items on the agenda were completed.