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