PART 1

..............................................................Syncesia [treated in 1990 as Chiodecton perplexum Nyl.]
1. Exciple not evident or byssoid (when pruina dissolved in KOH); hypothecium colorless
or light brown and small, confined to base of ascoma ............................................................................ 11
11. Hypothecium light brown, small, only at base of ascoma.............................................................. 12
12. Exciple not evident; epithecium not byssoid; ascomata immersed, asteriform;
disk exposed, orange or red brown; ascospores 4-celled, 15-20 × 5 µm;
psoromic acid; Duval, Leon and St. Lucie counties ....................................................................
................................................................................ Sclerophyton inscriptum (Nyl.) Müll. Arg
12. Ascomata densely pruinose; exciple and epithecium pale, byssoid
hypothecium brown; ascospores 4-celled, ± clavate, ca. 24-31 × 6 µm;
Bay County.......................................................................................... Genus? sp. Harris 35756
11. Hypothecium colorless ................................................................................Enterographa/Mazosia
BACTROSPORA Massal.
Since "Some Florida Lichens" was published Egea and Torrente have revised the genus
(Lichenologist 25: 211-255. 1993). Their study has resulted in the reduction of one of the Florida species to
synonymy and the addition of one species to the mycota.
1. Ascospores narrow, 3-4 µm wide.............................................................................................................. 2
2. Ascospores long, 35-130 µm ................................................................................................................ 3
3. Ascospores 12-26-celled; exciple or exciple and epithecium containing
small granules; tissues IKI-, KOH/IKI + bluish................................................................................... 4
4. Ascomatal margin smooth; ascospores 12-20-septate,
47-85(-90) × 2-3(-3.5) µm; Collier, Duval, Lee, Levy and
Polk counties ........................................................................ B. myriadea (Fée) Egea & Torrente
4. Ascomatal margin with sparse, small teeth; ascospores
70-130 × 2-2.5(-3) µm; Dade, Levy and Monroe
counties ........................................................................ B. denticulata (Vainio) Egea & Torrente
3. Ascospores 10-celled, 35-50 × 3 µm; exciple and epithecium lacking
granules; parts of exciple and base of hymenium IKI+ bluish,
KOH/IKI+ deep blue; thallus IKI+ bluish; common, south to
Sarasota County......................................................................................B. mesospora R. C. Harris
2. Ascospores short, (4-)6-celled, 22-27 × 3-4 µm; on lignum or bark
of Taxodium; Franklin, Liberty and Wakulla counties...................................B. brevispora R. C. Harris
1. Ascospores broad, 18-20-celled, 80-90 × 7-10 µm; Calhoun,
Duval and Nassau counties........................................................................... B. macrospora R. C. Harris
NOTES
Bactrospora denticulata (Vainio) Egea & Torrente
3