Lasiosphaeriaceae: Keys to genera

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1. DUNG INHABITING (refer to key in Lundqvist, 1972)

A. Known only from dung

Anopodium N. Lundq.
Apodospora Cain & J.H. Mirza
Arniella Jeng & J.C. Krug
Bombardioidea C. Moreau ex N. Lundq.
Emblemospora Jeng & J.C. Krug
Fimetariella N. Lundq.
Periamphispora J.C. Krug
Schizothecium Corda
Triangularia Boedijn
Tripterosporella Subram. & Lodha
Zopfiella G. Winter
Zygopleurage Boedijn
Zygospermella Cain


B. Known from dung and herbaceous substrates or soil

Apiosordaria Arx & W. Gams
Arnium Nitschke ex G. Winter
Camptosphaeria Fuckel
Jugulospora N. Lundq.
Strattonia Cif. (also wood)


C. Known from dung and wood

Bombardia (Fr.) P. Karst.
Cercophora Fuckel
Podospora Ces.


2. OTHER SUBSTRATES

A. Known only from wood

I. Marine
A. Ascospores aseptate

Adomia S. Schatz. ascospores ellipsoid, brown, aseptate, w/ hyaline appendage, 20-33 x 8-12 µm

B.Ascospores septate

Biconiosporella Schaum. ascospores biconical, dark brown, 3-septate, 26-33 x 16-21 µm


II. Terrestrial or freshwater
A. Ascospores scolecosporous


[Acrospermoides - leaf inhabiting, see below]
Ceratosphaeria Niessl, ascospores scolecosporous, hyaline, 5-7 septate, 50-70 x 3-4.5 µm
Lasiosphaeria s. lat. (p.p.)
Mycomedusiospora G.C. Carroll & Munk, ascospores scolecosporous-vermiform-coiled, hyaline, septate, 200? x 1.5-2 µm, disarticulating
Ophioceras Sacc. ascospores scolecosporous, hyaline, 3-7 septate, 94-110 x 2-3 µm


B. Ascospores shaped otherwise
1. Ascospores aseptate

Annulatascus K.D. Hyde (freshwater) ascospores fusiform, hyaline, aseptate, w/ bipolar appendages, 21-30 x 6.5-8.5 µm
Iodosphaeria Samuels et al. ascospores allantoid or inequalateral ellipsoid, hyaline, aseptate, 16-25 x 4-8 µm
Lasiosphaeriella Sivan. (p.p.) ascospores wide cylindric-allantoid-phaseoliform, hyaline becoming pale brown, 0-multiseptate-muriform, 30+ x 10-15 µm
Phaeotrichosphaeria Sivan. (p.p.) ascospores ovoid-ellipsoid, pale brown, 0-1 septate, 8-20 x 4-10 µm


2. Ascospores septate
a. 1-septate
i. hyaline

Chaetosphaeria Tul. & C. Tul. (p.p.) ascospores fusiform, hyaline, septate, various sizes
Lasiosphaeria Ces. & de Not. (p.p.) ascospores cylindrical, basal end geniculate, pointed or not, septate, various sizes
Phaeonectriella Eaton & E.B.G. Jones (freshwater) ascospores ellipsoid, hyaline becoming grey to brown, 1-septate, 26-30 x 9-11 µm
Porosphaerella E. Müll. & Samuels, ascospores ellipsoid-fusiform, hyaline becoming brown, 1-septate, 9-12 x 4-5 µm, pore at each end


ii. brown
aa. uniformly pigmented

Lasiosphaeria Ces. & de Not. (p.p.) ascospores cylindrical, basal end geniculate, pointed or not, septate, various sizes
Phaeonectriella Eaton & E.B.G. Jones (freshwater) ascospores ellipsoid, hyaline becoming grey to brown, 1-septate, 26-30 x 9-11 µm
Phaeotrichosphaeria Sivan. ascospores ovoid-ellipsoid, pale brown, 0-1 septate, 8-20 x 4-10 µm
Porosphaerella E. Müll. & Samuels, ascospores ellipsoid-fusiform, hyaline becoming brown, 1-septate, 9-12 x 4-5 µm, pore at each end
Spinulosphaeria Sivan. ascospores ovoid-ellipsoid, brown, 1-septate, 10-14 x 3.5-4.5 µm
Thaxteria Sacc. (p.p.) ascospores allantoid, brown, 1-3 septate, 20 x 6 µm

bb. not uniformly pigmented

(Ascocodinaea) Litschaueria Petr. (p.p.) ascospores ellipsoid-fusiform, central cells brown, end cells hyaline, 0-2 septate, 10-17 x 4-6 µm
Striatosphaeria Samuels & E. Müll. ascospores ellipsoid, dark brown, septum darker, 1-septate, 19-25 x 7-9 µm, with broad, longitudinal dark ridges and pale furrows


b. >1-septate
i. hyaline

Chaetosphaeria Tul. & C. Tul. ascospores fusiform, hyaline, septate, various sizes
Lasiosphaeria Ces. & de Not. ascospores cylindrical, basal end geniculate, pointed or not, septate, various sizes
Lasiosphaeriella Sivan. ascospores wide cylindric-allantoid-phaseoliform, hyaline becoming pale brown, 0-multiseptate-muriform, 30+ x 10-15 µm
Pseudohalonectria (see under brown spores)

ii. brown
aa. uniformly pigmented

Lasiosphaeria Ces. & de Not. ascospores cylindrical, basal end geniculate, pointed or not, septate, various sizes
Lasiosphaeriella Sivan. ascospores wide cylindric-allantoid-phaseoliform, hyaline becoming pale brown, 0-multiseptate-muriform, 30+ x 10-15 µm
Porosphaerellopsis Samuels & E. Müll. ascospores ellipsoid-fusiform, dark brown, septa darker, 3-septate, 16-24 x 4-6 µm, pore at each end
Pseudohalonectria Minuora & T. Muroi (freshwater) ascospores narrow fusiform-cylindrical, hyaline- yellow to pale brown, 5-7 septate, 55-70 x 4.5-6.5 µm
Thaxteria Sacc. ascospores allantoid, brown, 1-3 septate, 20 x 6 µm

bb. not uniformly pigmented

Chaetosphaerella E. Müll. & C. Booth, ascospores cylindric-allantod, curved, central cells brown, ends hyaline, 3-septate, 32-36 x 6-9 µm
Eosphaeria Höhn. ascospores cylindrical, basal end geniculate, apical 2/3 brown, basal 1/3 hyaline, ~5-septate, 40-48 x 4-5 mm
Litschaueria Petr. ascospores ellipsoid-fusiform, central cells brown, end cells hyaline, 0-2 septate, 10-17 x 4-6 µm
Melanochaeta E. Müll., Harr & Sulm. ascospores fusiform, central cells brown, end cells paler, 3 or more septate, 20-30 x 7-10 µm or 40-55 x 7-9 µm
Porosphaerellopsis Samuels & E. Müll. ascospores ellipsoid-fusiform, dark brown, septa darker, 3-septate, 16-24 x 4-6 µm, pore at each end
Pseudocercophora Subram. & Sekar, ascospores cylindro-clavate, curved, apical part swelling slightly, hyaline, becoming pale brown, septate


B. Known from wood and dung

Bombardia (Fr.) P. Karst.
ascospores cylindrical, sigmoid, basal 1/3rd geniculate, apical 1/3rd swells and becomes brown, basal 2/3rds remains hyaline, septate, various sizes, with gelatinous appendages or not
Cercophora Fuckel
ascospores cylindrical, sigmoid, basal 1/3rd geniculate, apical 1/3rd swells and becomes brown, basal 2/3rds remains hyaline, septate, various sizes, with gelatinous appendages or not
Podospora Ces.
ascospores clavate, apical head swells and becomes brown, basal pedicel remains hyaline, aseptate?, various sizes, with gelatinous appendages or not


C. Known only from monocots (and on herb stems)


1. Ascospores aseptate

Caudatispora J. Frohlich & K.D. Hyde. ascospores fusiform- ellipsoid- clavate, curved, with tail-like extension, hyaline-pale yellow, 29-45 x 8-10 µm

2. Ascospores 1-septate


Lasiobertia Sivan. ascospores narrow fusiform, hyaline, 1-septate, 55-74 x 4.5-6 µm

3. Ascospores > 1-septate

Phragmodiscus Hansf. ascospores fusiform-cylindrical, slightly curved, hyaline, 5-6 septate, 45-50 x 5-8 µm
Plagiosphaera Petr. (and on herb stems) ascospores scolecosporous, loosely spirally twisted, hyaline, 3+ septate, 45-65 x 2-2.5 µm


D. Known only from leaves

Acrospermoides Miller & G.E. Thomps. ascospores scolecosporous, hyaline, aseptate, 145-163 x 1 µm


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