A bibliography of Podospora and Schizothecium, a key to the ...

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A.M.B. Centro Studi Micologici
but the other microscopic features resemble those of sect. Malinvernia (Rabenh.) N. Lundq.
9) Podospora phaeotricha (Rehm) P. Syd. (nom. inval.) because the systematic position of
this taxon is unclear: according to Lundqvist (in litt.), who studied the type material, “its
spore septum is formed”, like in most Podospora spp., “at the same time as the start of
the brown pigmentation”, whereas “its cell agglomerations on the perithecia remind of
Schizothecium and some Cercophora species”.
1) Perithecia glabrous or with filiform, rigid hairs, lacking swollen, articulated hairs. Exoperidium
of polygonal cells (textura angularis). Spores usually late septate, with an empty, easily
collapsing pedicel. True paraphyses, mixed with the asci, present. Podospora 27
1*) Perithecia with swollen hairs, both articulated and agglutinated to form triangular scales,
often crowning the neck base, or sometimes with only swollen (non-agglutinated) hairs, or
with single inflated and rounded, apically pointed, peridial cells. Exoperidium of (sub)globose
cells (textura globulosa or globulosa-angularis). Spores early septate, with a plasma-filled,
hardly collapsing pedicel. True filiform paraphyses absent, replaced by moniliform
“jacket”paraphyses, enveloping the asci. Schizothecium 2
2) Features intergrading with those of Zopfiella (see GUARRO ET AL., 1991), i.e. spore head often
inequilateral, pedicel ephemeral, caudae or sheaths absent or occasional and soon
disappearing, and preference for growth on soil or plant debris, rather than on dung. Asci
cylindrical, rarely clavate, with an indistinct or absent apical ring, and uniseriate, rarely
biseriate spores, with an apical or subapical or even lateral germ pore. 3
2*) Spore head usually equilateral and with an apical germ pore. Pedicel persistent. Gelatinous
equipment well developed, usually formed of two lash-like caudae, one upper at or near the
apex of the spore head, and one lower at the end of the pedicel. Asci rarely with a distinct
apical ring. Preference for dung. 8
3) Asci 4-spored. Spore head strongly inequilateral (one side flattened), 19-21 × 9.5-10.5 µm
(17-24 × 10-13, MIRZA & CAIN, 1969), with a subapical germ pore. Pedicel 4-5 × 1-1.5 µm,
clavate. Swollen agglutinated hairs very short, widespread but denser at the neck. On
vegetables, soil, and dung. Schizothecium inaequale (Fig.34)
3*) Asci 8-spored. 4
4) Spore head 22-27.5 × 14-19.5 µm, hardly inequilateral, with an apical germ pore. Pedicel
cylindrical to slightly obclavate, 8-14 × 2 µm. Swollen agglutinated hairs 10-18 × 7-16 µm,
covering the upper part of perithecium and the neck base. On dead leaves of Carpinus.
Schizothecium carpinicola
4*) Spore head smaller. 5
5) Spore head 18-22 × 11-13 µm, equilateral, with a subapical germ pore. Pedicel triangular, 3-
7 × 3 µm. Asci clavate with biseriate spores. Neck base and upper portion of perithecium
with scales of swollen agglutinated hairs, up to 80 × 30 µm. On dung, occasionally on soil.
Schizothecium nannopodale
5*) Spore head smaller, strongly inequilateral. Pedicel obclavate. Asci cylindrical with uniseriate
spores. Swollen hairs shorter. 6
6) Spore head 14-16 × 7.5-8.5 µm (17.5-19.5 × 7.5-8.5, SCHMIDT, 1912), flattened at one side, with
an apical germ pore. Pedicel obclavate, 6-7.5 × 2-3 µm. Perithecial neck completely covered
with swollen agglutinated hairs, up to 50 µm long, with strongly fimbriate apical cells. Usually
on dung. Schizothecium vratislaviense (Figs.52-53)
6*) Spore head shorter, strongly curved and concave at one side. Swollen hairs shorter, with
some fimbriate apical cells. 7
7) Spore head 11-13 × 6-8 µm, with an apical germ pore. Pedicel 2.5-5 × 1 µm. On seeds and
dung. Schizothecium curvisporum
7*) Spore head 10-12 × 9-10 µm, with a lateral germ pore on the convex side. Pedicel 4-6 × 1-1.5
µm. Isolated from soil. Podospora (Schizothecium) selenospora
8) Asci 4-spored. Spores uniseriate. Pedicel cylindrical, sheathed by the lower cauda. 9
8*) Asci more than 4-spored. Spores uni- or bi- to multiseriate. Pedicel variously shaped. 10
PdM 29.pmd 104
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