Hallo
Here is the key from Kimbrough and al. in American J. Bot. 1969. My xerox copy is too bad to get a readable scan. SO if anybody can afford a good one, it will be nice.
A. ascospores mostly 30µ or longer. B
A. ascospores shorter. C

B. spores 27-38x20-25 µ, with tack-shaped markings up to 5.0 µ high.I. bermudensis
B. spores 31-35x10-18 µ, with punctate markings less than 1.0 µ in diam. I. durbanensis

C. ascospores smooth, epispore often wrinkled and cyanophilous in cotton blue. I. difformis
C. ascospores with callose-pectic markings. D

D. spore markings less than 0.8 µ, punctate, ends of spores without apiculi or much larger markings. E
D. spores not as above. G

E. ascospores 22-27x14-16 µ, apothecia brownish. I. verrucosporus
E. ascospores smaller, apothecia not brownish. F

F. ascospores 15-20x7.5-10.5 µ, narrowly ellipsoid, excipulum of doliform to elongate cells. coprophilous. I. carneus
F. ascospores 18-22.5x11-14.5 µ, broadly ellipsoid, excipulum of globose, yellowish cells. non coprophilous. I. testaceus

G. ends of spores with apiculi or aggregations of much larger markings. H
G. spores with tack-shaped or rounded markings 1.0 to 2.5 µ. I

H. ascospores 23-27x14-16 µ, markings 0.5µ with clusters 2.0 µ high at each end. I. granulipolaris
H. ascospores 19-25x9.5-11 µ, markings 1.0-1.5 µ and apiculi up to 5.0µ at each end. I. crustaceus

I. asci 300 µ or longer, spore markings 1.0-2.0 µ, rounded, densely covering spores. I. sarcobius
I. asci shorter, spore markings small, tack-shaped. I. helotinus

You can also find a recent key in Fungi fimicoli italici by Doveri, Carotti & Cacialli, both in italian and english. It, is a major work for fimicolous species (basidios and ascos). It has just been reissued.

I only have experience with I. carneus on rabbit dung and I. testaceus on rotten straw.
François

bonsoir francois,

merci beaucoup por le clavet! the doveri i know ;-) i think it must be verrucosporus, but at least i have to check the work of benkert in zmykol 63 to be sure.
herzliche grüße
dirk

What mean tack and callose-pectic in the key ?


Roland

Roland
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