PART 1

CHAENOTHECA Th. Fr.
1. Base of capitulum brown to whitish, not pruinose; photobiont
Chlorococcalean........................................................................................................................................ 2
2. Thallus PD+ yellow (unknown); apothecia relatively tall and slender;
ascospores 2.7-4.3 µm in diameter, more or less smooth (Tibell,1980);
common, penisular Florida.....................................................................C. brunneola (Ach.) Müll. Arg.
2. Thallus PD+ red-orange (virensic acid); apothecia relatively short and
stout; ascospores 4-5 µm in diameter, rather coarsely ornamented;
Hillsborough, Levy, Putnam and Sarasota counties.........................................C. floridana R. C. Harris
1. Base of capitulum yellow pruinose; photobiont Trentepohlia;
ascospores 3-4 µm in diam.; Bay County............................................. C. hispidula (Ach.) Zahlbr. s. lat.
NOTES
Chaenotheca brunneola (Ach.) Müll. Arg. s. lat.
I cannot make out the chemistry reported by Tibell (1980,1987) for the brunneola-hygrophilastemonea
complex. Most Florida collections of C. brunneola contain an unknown identical to that found in
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