PART 1

.................................................................................... Mycocalicium albonigrum (Nyl.) Fink
4. Stalk almost colorless to pale olive or pale brown; hyphae irregularly arranged.......................... 7
7. Ascospores arranged end to end ............................................................................................. 8
8. On Sabal palmetto; ascospores 7-9 × 3-4 um; common,
south to Collier County ............................... Chaenothecopsis rappii (Nadv.) R. C. Harris
8. On pine bark; ascospores 6-7 × 2.5-4 µm; rare,
Franklin County ........................................................................Chaenothecopsis sp. 1393
7. Ascospores obliquely arranged, 7-8 × 3.5-4 µm; on Quercus;
rare, Citrus County .................................................................... Chaenothecopsis nana Tibell
3. Exciple and stalk reddish, redder in KOH; exciple incurved, longitudinally
rugose; ascospores 8-11 × 4.5-5.5 µm; on old wood; Santee Canal,
South Carolina, not yet found in Florida ...................... [Mycocalicium ravenelii (Tuck. ex Nyl.) Fink]
2. Apothecia sessile or with a very short stalk, hairy due to projecting
excipular hyphae; ascospores simple; growing on thallus of sterile
Tylophoron protrudens; Wakulla County................................Chaenothecopsis pilosa Tibell & Kalb
1. Apothecia containing norstictic acid; ascospores 2-celled, ± cylindrical
with rounded ends, 7-11 × 3-3.5 µm; on old wood; Bradford County and
Okefenokee Swamp, Georgia............................................... Chaenothecopsis norstictica R. C. Harris
NOTES
CHAENOTHECOPSIS Vainio
Chaenothecopsis norstictica R. C. Harris, sp. nov.
Unica Mycocalicacearum acidum norsticticum continens.
Type. GEORGIA. Charlton County: Okefenokee National Wildlife Refuge, Suwanee Canal Recreation Area,
along "Swamp Trail" on Chesser Island, swamp forest, 12 Dec 1987, Buck 15462 (NY, holotype).
Thallus not evident, on lignum, no algae seem to be associated with stalk bases. Cladonia ravenelii
Tuck. is also on the wood but the Chaenothecopsis does not seem to be directly associated with it. Apothecia
dark brown, slightly shiny, ca. 0.9 mm tall. Stalk dark brown; hyphae seem more or less parallel but hard to
tell. Capitulum obconical, ca. 0.3-0.4 mm in diameter. Exciple and upper stalk bleeding yellow in KOH with
subsequent formation of typical crystals of norstictic acid (confirmed by TLC), norstictic acid apparently
present in substantial concentration. Asci with tip pierced by narrow canal. Ascospores pale brown, more or
less cylindrical with rounded ends, 2-celled, 7-11 × 3-3.5 µm; septum dark.
Chaenothecopsis norstictica is apparently unique among the Mycocaliciaceae in producing a
depsidone. The chemistry of the family otherwise seems confined to various unknown pigments or rarely the
pulvinic acid group.
Additional specimens. FLORIDA. Bradford County: Lake Butler Wildlife Management Area, Raiford
Tract, along Co. Rd. 125, 6.1 mi ENE of U.S. 301 at Lawtey, 30°04'N, 82°09'W, pine scrub around Taxodium
swamp, 3 Dec 1994, Buck 27333, 27343, 27348 (NY).
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