PART 1

TRYPETHELIUM Sprengel
1. Thallus or ascomatal wart KOH+ purple ................................................................................................... 2
2. Thallus usually yellowish or brownish, KOH-; ascomata aggregated
in raised pseudostromata which are often constricted at base,
contents KOH+ purple.......................................................................................................................... 3
3. Ascospores 10-14-celled, 40-50 × 9-12 µm; powder in pseudostromata
yellow to tan; pseudostromata and/or thallus often pruinose;
peninsular Florida..............................................................................................T. eluteriae Sprengel
3. Ascospores 13-16-celled, 60-75(-85) × 11-12 µm; powder in
pseudostromata orange; pseudostromata orange to brown,
not pruinose; Alachua, Gilchrist, Polk and Sarasota counties..............................................................
................................................................................................................. T. subeluteriae Mak. & Pat.
2. Thallus orange; ascomata mostly immersed, solitary and scattered
to aggregated; ascospores 4-celled, 21-28 × 8-9 µm; peninsular Florida ...............................................
.................................................................................................................. T. aeneum (Eschw.) Zahlbr.
1. Thallus and warts KOH- ............................................................................................................................ 4
4. Ascomata covered by thallus or in pseudostroamta ......................................................................... 5
5. Ascospores 4-celled, IKI- .............................................................................................................. 6
6. Ascospores smaller, less than 20-27 × 7.5-10 µm long ..............................................................
....................................................................................................Trypethelium variolosum Ach.
The trypethelioid morphs with pseudostromata containing 1-many simple ascomata have been
recognized as follows. Some may find it more satisfying to continue to do so.
A. Thallus UV+ yellow (lichexanthone);throughout the state
........................................................................................................ T. ochroleucum (Eschw.) Nyl.
A. Thallus UV-; throughout the state.................................................T. nitidiusculum (Nyl.) R. C. Harris
6. Ascospores large, 35-43 × 12-15 µm; ascomata solitary or
grouped, covered by yellow green thallus except at apex which
is black with a pale ring; hymenium not inspersed; peninsular Florida .......................................
........................................................................ T. floridanum (Zahlbr. ex Choisy) R. C. Harris
5. Ascospores 8-12-celled, 38-52 × 7-10 µm, IKI+ weak violet;
pseudostromata not raised; south to Marion County........................T. virens Tuck. ex Michener
4. Ascomata black, naked, solitary or aggregated; hymenium inspersed;
ascospores 4-celled, 20-26 × 6-8 µm; throughout the state................................................................
............................................................................................................T. tropicum (Ach.) Müll. Arg.
NOTES
Trypethelium aeneum (Eschw.) Zahlbr.
Trypethelium ferrugineum Müll. Arg., Bot. Jahrb. Syst. 6: 392. 1885. Type. CUBA. Wright, Verr.
Cub. 157, Lich. Cub. II, 593, 594 (FH-Tuck 3972, isosyntypes), syn. nov.
Trypethelium ferrugineum β. inornatum Müll. Arg., Bot. Jahrb. Syst. 6: 392. 1885. Type. CUBA.
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