PART 1
PART 1
PART 1
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SCLEROPHYTON Eschw.<br />
Only the single species, S. inscriptum (Nyl.) Müll. Arg., is in Florida. Egea & Torrente (Bryologist 98:<br />
207-217. 1995) have revised Sclerophyton s. lat. for North America. They provide excellent illustrations. In<br />
1990 I suggested that Sclerophyton should be restricted to the hyaline spored species with dendroid,<br />
immersed ascomata and I am still of this opinion. Egea and Torrente retained the old, broad definition,<br />
recognizing that there are two distinct groups in the genus so constituted, but provided no reasons as to why<br />
they should be joined in a single genus. Superficially S. inscriptum (North America) and S. elegans Eschw.<br />
(Brazil) are identical and both contain psoromic acid. My first thought was to synonymize them. Egea and<br />
Torrente suggested that they are conspecific but did not formally make the synonymy. However, examination<br />
of an isotype of S. elegans (H-Nyl 4583) revealed that the ascospores are slightly smaller (13-14.5 × 4-5 µm)<br />
than in S. inscriptum, (15-20 × 5 µm). Pending study of more material, I agree the two should be kept<br />
separate.<br />
GRAPHIDALES<br />
GRAPHIDACEAE Dumortier<br />
I had hoped to completely revise this family. However, I have had to be content with a few minor additions and corrections. I<br />
now have collections of at least a dozen species not treated in 1990 and expect that more will turn up, making this one of the most<br />
speciose families among the lichen-forming fungi in Florida.<br />
KEY TO GENERA<br />
1. Ascomata immersed to sessile, mostly elongated with a narrow, often slit-like disk;<br />
not aggregated in a pseudostroma ......................................................................................................................................................... 2<br />
2. Spores colorless................................................................................................................................................................................... 3<br />
3. Spores transversely septate...................................................................................................................................................Graphis<br />
3. Spores submuriform to densely muriform........................................................................................................................... Graphina<br />
2. Spores brown ....................................................................................................................................................................................... 4<br />
4. Spores transversely septate....................................................................................................................................... Phaeographis<br />
4. Spores submuriform to densely muriform................................................................................................................ Phaeographina<br />
1. Ascomata with brown disk, cup-like or aggregated in a pseudostroma................................................................................................. 6<br />
5. Ascomata cuplike with a thick raised margin; disk brown; hymenium not inspersed;<br />
ascospores colorless to weakly tinted, muriform with 9-11 longitudinal cells,<br />
33-48 × 13-16 µm; no substances; throughout Florida......................................................Gyrostomum scyphuliferum (Ach.) Nyl.<br />
5. Ascomata aggregated in a pseudostroma.......................................................................................................................................... 6<br />
6. Spores muriform, colorless becoming brownish in age, 35-50 × 8-9 µm;<br />
pseudostroma well developed, usually gray pruinose; hymenium not inspersed;<br />
no substances; throughout Florida......................................................................................................... Glyphis cicatricosa Ach.<br />
6. Spores transversely 4-6-celled, brown; pseudostroma poorly developed,<br />
usually whitish............................................................................................................................................................. Sarcographa<br />
GLYPHIS Ach.<br />
Only a single species in North America. Redinger (1934) in his treatment for Brazil synonymized the names which also appear in<br />
the North American list, choosing Glyphis cicatricosa Ach. from among the competing synonyms. See generic key for diagnosis.<br />
GRAPHINA Müll. Arg.<br />
1. Lirellae not carbonized ............................................................................................................................................................................ 2<br />
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