Tremella synarthoniae Diederich & Common

• Region

  North America

• Country

  United States of America

• State/Province

  Florida

• County/Municipio

  Collier Co.

• Locality

  Collier-Seminole State Park, just W of boat basin

• Coordinates

  25.98, -81.58

• Location Notes

  [Map associated with specimen]

• Distribution

  Map all specimens of this taxon

Tremella synarthomae
ture, ellipsoid, rarely with a stalk-like base, 2-celled,
with a longitudinal or oblique, rarely transverse septum,
11-20 x 7.5-11 pm; epibasidia cylindrical, at least 42
pm long. Basidiospores ellipsoid, 6-9.5 * 5.5-7.5 pm.
Asexual stage unknown.
Notes. Amongst the known lichenicolous Tremella spe-
cies with brownish gelatinous basidiomata developing
on the host thallus, mainly longitudinally 1-septate ba-
sidia and relatively large basidiospores, Tremella phae-
ographidis differs by the slightly larger, often darker ba-
sidiomata, and the frequently transversely septate basidia;
T. montis-wilhelmii, T. normandinae and T. parmeliellae
differ by the strongly convex, less gelatinous basidioma-
ta. Tremella coniocarpi, a species growing on a related
host, differs by pale (not orange) brown basidiomata and
4-celled basidia.
Ecology and host. On the thallus of corticolous Synariho-
nia inconspicua.
Distribution. North America (USA: Florida), known from
two nearby localities.
Additional specimen examined. USA: Florida-. Collier Co., Faka-
hatchec Strand State Park, trail east of Big Cypress Boardwalk
area, on US 41,25.9475¦N, 81.4714¦W, 5 m, on hardwood scrub
and Sabal Palm, on Synarihonia inconspicua, 2014, Common
98531 (BR).
Type USA, Texas, Parker Co., c. 6.4 km S of Authon and 14 km E
of Mineral Wells, 32.8233¦N, 97.9179¦W, on Quervus stellata
in a post oak savannah community, on Teloschistes exilis, 29
Jan. 2019,0. Gockman & J. Walden 5783 (BR - holotype).
MycoBank: MB844696
Basidiomata gall-inducing, resulting in orange, often
curved swellings of the host thallus contrasting with the
more yellow intact thallus, up to 1 x 0.3 mm. Context hy-
phae not observed; subbasidial hyphae thick-walled, 2-3.5
pm diam.; haustoria present, basal clamp not observed.
Hymenium containing numerous subspherical to ellipsoid
Tremella teloschistis, USA, Texas, holotype. Basidiomata on the thal-
lus of Teloschistes exilis. Scale bar: 500 pm.
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BOTANICAL
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HOLOTYPE OF:
Tremella synarthoniae Diederich & Common
See. Diederich, P., A.M. Millanes and M. Wedin. 2022. Class
Tremellomycetes,order Tremellales. Flora of Lichenicolous Fungi 1: 105-
282. [on p. 2591
Det. I.C. Lendemer, 2022
The New York Botanical Garden
LICHENS OF FLORIDA, U.S.A.
Tremella synarthoniae Diederich & Common
Det. P. Diederich, 2022 HOLOTYPE
on Synarthonia inconspicua
on Arthonia
Collier County: Collier-Seminole State
Park, just W of boat basin, 25¦59'N,
81¦35'W; mangroves (mostly Avicennia)
at edge of salt marsh.
NEW YORK BOTANICAL GARDEN
7 December 1992
04285313
Richard C. Harris 30019-A
Tremella synarthoniae Diederich & Common, sp. nov.
Diagnosis: Characterized by the flat or slightly convex, orange-
brown, gelatinous basidiomata on the thallus of Synarthonia
inconspicua, 0.3-0.6 mm diam., the 2-celled basidia with a
longitudinal or oblique septum, 11-20 x 7.5-11 pm, and the
relatively large basidiospores 6-9.5 x 5.5-7.5 pm.
Etymology: From Synarthonia, the host lichen.
Type: USA, Florida, Collier Co., Collier-Seminole State Park, just
W of boat basin, 25¦59ÆN, 81¦35,W, mangrove, on Synar-
thonia inconspicua, 7 Dec. 1992, R. C. Harris 30019-A (NY
- holotype).
MycoBank:. MB844695
Basidiomata superficial, flat or slightly convex, round-
ish, elongate or irregular in form, gelatinous, orange-
brown, not gall-inducing, 0.3-0.6 mm diam. Context hy-
phae 1.5-2 pm diam.; subbasidial hyphae thick-walled,
3-4.5 pm diam.; haustoria present, with a basal clamp.
Hymenium containing numerous subspherical to ellip-
soid probasidia with a basal clamp. Basidia, when ma-
Tremella synarthoniae, USA, Florida, holotype. Basidiomata on the
thallus and apothecia of Synarthonia inconspicua. Scale bar: 500 pm.
Diederich, Millanes, Wedin & Lawrey - Flora of Lichenicolous Fungi - Vol. 1. Basidiomycota - 2022
Tremella synarthoniae, USA, Florida, holotype. A, Basidia in different stages of development. B, Basidiospores. In phloxine. Scale bar: 10 pm.
Tremella teloschistis Diederich, Gockman, Walden &
Millanes, sp. nov.
Diagnosis: Characterized by the orange, slightly convex, elon-
gate, waxy-gelatinous basidiomata on the thallus of Tel-
oschistes exilis, up to 1 x 0.3 mm, the elongate ellipsoid to
subclavifbrm, transversely 1-septate basidia, 12-23 x 5.5-10
pm, and the medium sized, subspherical basidiospores, 5-7.5
x 4.5-6.5 pm.
Tremellomycetes - Tremellales