Tremella parmogardneri Diederich, Etayo & Millanes

• Region

  North America

• Country

  United States of America

• State/Province

  Florida

• County/Municipio

  Hernando Co.

• Locality

  Withlacoochee State Forest, Richloam Wildlife Management Area, N. Grade Rd. at Lion Rd., 0.7 mi E of Fla. Hwy 471, 16.5 mi N of US 98

• Coordinates

  28.48, -82.07

• Location Notes

  [Map associated with specimen]

• Distribution

  Map all specimens of this taxon

Tremellomycetes - Tremellales
Class Tremellomycetes
Order	Tremel
by P. Diederich, A. M. Millanes & M. Wedin
Diederieh, P., A. M. Millanes & M. Wedin. 2022. Class Tremellomycetes, order Tremellales. In: Diederich et al. (eds.), Flora of Lichenicolous Fungi,
Vol. 1, Basidiomycota. National MusTum of Natural History, Luxembourg: 105-282.
_________________________________________________________________  Tremellomycetes	-	Tremellales
Tremella parmogardneri, USA, Florida, isotype. Basidiomata on Par-	Tremella parmogardneri, USA, Florida, holotype (modified from
motrema gardneri. Scale bar: 1 mm.	Diederich 1996). Basidia and basidiospores. Scale bar 10 pm.
rather well delimited, medium to dark brown, matt, waxy-
gelatinous, 1-4 mm diam. Context hyphae not observed;
subbasidial hyphae thick-walled, 2.5-4 pm diam.; haustoria
present, basal clamp not observed. Hymenium containing
numerous ellipsoid probasidia with a basal clamp. Basidia,
when mature, elongate ellipsoid, transversely 1-septate, 16-
28(-36) x 6-10 pm, exceptionally longitudinally septate,
15-16 x 11-12 pm; epibasidia cylindrical, 2.5-4.5 pm thick,
at least 12 pm long. Basidiospores shortly ellipsoid, 6-8 x
5-7 pm. Asexual stage unknown.
Notes. This species differs from the other sexual Tremella
species confined to Parmotrema hosts by the entirely flat
basidiomata. From T. parmohypotropi and T. parmoperfo-
rati, it further differs by the constantly 1-septate basidia,
and from T. parmeliarum by the mainly transversely sep-
tate basidia.
Ecology and host. On the thallus of Parmotrema gardneri.
Distribution. North America (USA: Florida) and South
America (Bolivia).
Additional specimen examined. Bolivia: Dept. La Paz: Prov.
Larecaja, near Achiquiri village and Charapampa, 18 km from
Mapiri on the road to Apolo, Yungas inferior secondary forest,
Tremella parmogardneri
15¦13Æ31öS, 68¦13Æ49öW, 1071 m, on Parmotrema gardneri,
2011, Etayo 27223 (BR, LPB, herb. Etayo); Prov. Murillo, Sai-
nani, Valle del Zongo, open area with shrubs and scattered trees,
16¦07Æ01öS, 68¦04Æ49öW, 2100 m, on P. cf. gardneri, 2014, Etayo
34342 (LPB, herb. Etayo).
Tremella parmohypotropi Diederich, Gockman & Mil-
lanes, sp. nov.'
Diagnosis: Characterized by the large, strongly convex, basally con-
stricted, pale to dark brown galls over the thallus of Parmotrema
hypotropum, 0.3-5 mm diam., Ihe large, mainly longitudinally or
obliquely 2-4-celled basidia, 17-36 x 12-18 pm, and the large,
subspherical to shortly ellipsoid basidiospores, 7.5-9.S * 7-9 pm.
Etymology. From Parmo[trema\ hypotropum, die host lichen.
Type-. USA, Texas, Limestone Co., c. 4.2 km S of Groesbeck and
9.3 km NE of Thornton, 31.4837¦N, 96.5282¦W, on the bark
of Prosopis glandulosa in a pasture, on Parmotrema hypo-
tropum, 10 Dec. 2018,0. Gockman 5784 (BR - holotype).
MycoBankr. MB844675
Basidiomata inducing the formation of strongly convex
galls with a constricted base, pale to dark brown, often
with a greyish pm tinge, 0.3-5 mm diam.; surface matt,
at the beginning often with a irregular central depression,
sometimes becoming slightly lobulate or tuberculate. Con-
text hyphae not observed; subbasidial hyphae thick-walled,
2-4 pm diam.; haustoria not observed. Hymenium contain-
ing numerous subspherical to ellipsoid probasidia with a
basal clamp. Basidia, when mature, ellipsoid, occasionally
with an attenuated stalk-like base, 2-4-celled, with longi-
tudinal, oblique or rarely transverse septa, 17-36 x 12-18
pm; epibasidia cylindrical, up to 85 pm long, 3-5 pm thick.
Basidiospores subspherical to shortly ellipsoid, 7.5-9.5 x
7-9 pm. Asexual stage unknown.
Notes. This species differs from Tremella parmeliarum by the
basidiomata that are more greyish brown, not chestnut brown,
Tremella parmogardneri Diederich, Etayo & Millanes,
sp. nov.
Diagnosis: Characterized by the resupinate, medium to dark brown
basidiomata over the thallus of Parmotrema gardneri, 1-4 mm
diam., the elongate ellipsoid, 1-septate basidia, 16-28(-36) x
7-10 pm, and the shortly ellipsoid basidiospores, 6-8 x 5-7 pm.
Etymology: A noun in apposition, from Parmo[trema] and gard-
neri, the host lichen.
Type: USA, Florida, Hernando Co., Withlacoochee State Forest,
Richloam Wildlife Management Area, N Grade Rd. at Lion
Rd., 0.7 mi E of Fla. Hwy 471,16,5 mi N of US 98,28¦29ÆN,
82¦04ÆW, small cypress dome, on Taxodium, on Parmotrema
gardneri, 4 Dec. 1992, R. C. Harris 29787-A (NY 02690975
- holotype; BR - isotype).
MycoBank: MB844674
Basidiomata not gall-inducing, resupinate over the thallus of
the host, flat or very slightly convex, roundish to elliptical,
?
The New York Botanical Garden
LICHENS OF FLORIDA, U.S.A.
on Parmotrema gardneri (Dodge) STrusiaux
on Taxodium
Hernando County: Withlacoochee State Forest,
Richloam Wildlife Management Area, N.
Grade Rd. at Lion Rd., 0.7 mi E of Fla.
Hwy 471, 16.5 mi N of US 98, 28¦29'N,
82¦04'W; small cypress dome.
NEW YORK BDTAHun.. ½
4 December 1992
Tren
Richard C. Harris 29787-A
U2+90975
det. Paui l^icuciicu V i j~j? j iAA/A>p\.* vmmfg .	/
HOLOTYPE OF: