PART 1

no substances; not yet found in Florida .........................................................................................[P. inusta (Ach.) Müll. Arg.]
4. Hymenium not inspersed............................................................................................................................................................... 8
8. Lirellae densely branched or crowded and irregular, surrounded by
distinct whitish area ................................................................................................................................................................... 9
9. Norstictic acid; whitish area weakly raised, not mealy; ascospores 15-20 × 5-6 µm;
Polk and Seminole counties.......................................... Sarcographa intricans sensu Harris 1990 non (Nyl.) Müll. Arg.
9. No substances; lirellae in mealy decorticate patches, brown, irregular,
crowded ; ascospores 13-16 × 5-6 µm; Puntnam County .............................................................Phaeographis sp. 23697
8. Lirellae simple to loosely branched, not surrounded by whitish area;
ascospores 15-18 × 5-6 µm; norstictic acid or norstictic acid plus
stictic acid or rarely acid deficient; Duval, Polk and Volusia counties.......................................P. subtigrina (Vainio) Zahlbr.
3. Ascomata erumpent with more or less erect bark flaps ................................................................................................................ 10
10. No substances; hymenium inspersed; ascospores 16-20 × 7-8 µm;
Volusia County...............................................................................................................................P. subfulgurata (Nyl.) Zahlbr.
10. Norstictic acid; hymenium not inspersed; ascospores 19-21 × 7-8 µm;
Florida, without locality, Wilson...............................................................................................................Phaeographis sp. 1233
2. Ascospores 6-10-celled....................................................................................................................................................................... 11
11. Ascomata round to slightly elongated, not branched .................................................................................................................. 12
12. Thallus UV+ yellow (lichexanthone); margin not raised; ascospores 6-celled,
18-24 × 6-7 µm; south to Polk County............................................................................ P. punctiformis (Eschw.) Müll. Arg.
12. Thallus UV-(no substances); margin often erect, jagged; ascospores 8-10-celled,
25-40 × 7-10 µm; south to Polk County......................................................................................P. lobata (Eschw.) Müll. Arg.
11. Ascomata elongate, often branched ............................................................................................................................................ 13
13. Exciple not carbonized; hymenium not inspersed ................................................................................................................. 14
14. Margin not striate............................................................................................................................................................... 15
15. Lirellae simple or sparingly branched; disk weakly white pruinose;
ascospores (4-)6-celled, 20-25 × 7-9 µm; norstictic acid;
Highlands and Volusia counties.......................................................................................... Phaeographis sp. 23787B
15. Lirellae much branched, angular, crowded, surrounded by poorly
developed whitish area; disks bluish white pruinose; ascospores
(4-)6-celled, 22-24 × 6-7 µm; stictic acid; Highlands, Lake and
Volusia counties ....................................................................................... Sarcographa medusulina (Nyl.) Müll. Arg.
14. Margin striate; lirellae long, flexuose, branched; disk becoming
exposed, brown; ascospores 6-celled, 25-27 × 9-10 µm;
Florida, without locality, Wilson......................................................................................................Phaeographis sp. 1259
13. Exciple carbonized, at least at apex ..................................................................................................................................... 16
15. Ascomata not erumpent ................................................................................................................................................... 17
17. Hymenium inspersed with orange pigment, KOH+ dull purple;
lirellae black, short, little branched; exciple carbonized at apex;
ascospores 8-celled, 30-40 × 8-11 µm; norstictic acid;
Monroe County ..................................................................................................................... P. multicolor R. C. Harris
17. Hymenium colorless, KOH-; exciple entire; ascospores 6-8-celled,
26-42 × 8-11 µm; norstictic acid; not yet found in Florida..............................................[P. dendritica (Ach.) Müll. Arg.]
16. Ascomata erumpent with distinct erect bark flaps; exciple entire;
hymenium inspersed; thallus often with a reddish tinge; ascospores
6-7-celled, 27-32 × 8-9 µm; no substances; northern Florida ............................................ P. erumpens (Nyl.) Müll. Arg.
NOTES
14