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1. Thallus and apothecial margin greenish yellow; ascospores Pachysporaria-type,<br />

20-27 × 11-13 µm; central Florida ...................................................................................................................R. lepida (Nyl.) Müll. Arg.<br />

PERTUSARIALES<br />

PERTUSARIACEAE Körber<br />

OCHROLECHIA Massal.<br />

1. Thallus not pustulate-isidiate, smooth to rugose, rugae often vermiform;<br />

apothecial cortex C-, medulla C+ red (gyrophoric acid with accessory<br />

lichexanthone and methylhiascic acids); throughout the state...................................................................................O. africana Vainio<br />

1. Thallus pustulate-isidiate; pustules and thalline rugae very irregular, occasionally<br />

breaking down into a granular sorediose crust; apothecia mostly without<br />

cortex; apothecial medulla C+ red, (gyrophoric acid and 5-O-methylhiascic acid);<br />

Liberty and Marion counties ................................................................................................................................... O. antillarum Brodo<br />

PERTUSARIA DC.<br />

1. Ascomata discoid, lecanorate, often heavily pruinose or sorediate above or sterile and<br />

soraliate; ascospores l-2/ascus when present [if photobiont is Trentepohlia or chemistry<br />

is not one of those below, these will be treated in key to sterile sorediate crusts]................................................................................ 2<br />

2. Thallus UV+ yellow (lichexanthone)..................................................................................................................................................... 3<br />

3A. Lecanoric acid; wart C+ red; often fertile; south to Lake County....................................................................P. pulchella Malme<br />

3B. Hypothamnolic acid; wart KOH+ lavender, KC+ red, PD-;<br />

sometimes fertile; Duval, Liberty and Walton counties ......................................................................P. hypothamnolica Dibben<br />

3C. Picrolichenic acid; wart KOH-, C-, KC+ violet, PD-;<br />

sterile; Putnam and Wakulla counties ...............................................................................................................P. ventosa Malme<br />

3D. Baeomycesic acid, unknowns, squamatic acid (tr.);<br />

wart KOH-, C-, KC-, PD+ yellow; often fertile;<br />

south to Lee County ........................................................................................................................................ P. floridana Dibben<br />

3E. Haemathamnolic acid; wart KOH+ yellow becoming brownish,<br />

C-, KC-, PD+ orange; rarely fertile; throughout the state ..............................................................................P. copiosa Erichsen<br />

3F. Thamnolic acid; wart KOH+ yellow, C-, KC-, PD+ orange;<br />

south to Lake County.....................................................................................................................................Pertusaria sp. 25229<br />

3G. Stictic acid; wart KOH+ yellow, C-, KC-, PD+ pink-orange;<br />

Marion County .....................................................................................................................................Pertusaria sp. Buck 16889<br />

2. Thallus UV- or UV+ pinkish [if appropriate chemistry is not found, specimen is either a<br />

lichexanthone deficient form of the above group or not a Pertusaria] ............................................................................................... 4<br />

4. Thallus UV-, cortical xanthone lacking; usually fertile ..................................................................................................................... 5<br />

5A. Lecanoric acid; wart C+ red; south to Orange County........................................................................... P. velata (Turner) Nyl.<br />

5B. Picrolichenic acid; wart KOH-, C-, KC+ violet, PD-; Duval County.......................................................... P. amara (Ach.) Nyl.<br />

5C. Thamnolic acid; wart KOH+ yellow, C-, KC-, PD+ orange;<br />

Volusia County..................................................................................................................................P. trachythallina Erichsen<br />

5D. Fumarprotocetraric acid; wart KOH-, C-, KC-, PD+<br />

orange-red; Leon and Wakulla counties........................................................................................ P. multipunctoides Dibben<br />

4. Thallus UV+ pinkish (coronatone); stictic acid agg.; wart KOH+ yellow, C-, KC-,<br />

PD+ pink-orange; sterile; Duval, Highlands, Liberty and Nassau counties ............................................... P. expolita R. C. Harris<br />

1. Apothecia with small pore-like disk......................................................................................................................................................... 6<br />

6. Ascospores 8/ascus ............................................................................................................................................................................. 7<br />

7. Cortex UV+ orange, pink or UV- ...................................................................................................................................................... 8<br />

8. Cortex UV+ orange (thiophaninic acid)......................................................................................................................................... 9<br />

48

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