Cyphobasidium crocodiicola Diederich & W.R.Buck

• Region

  Oceania

• Country

  New Zealand

• Locality

  South Island: Boyle River Lodge.

• Coordinates

  -42.52, 172.38

• Location Notes

  [Map associated with specimen]

• Distribution

  Map all specimens of this taxon

Gi(COc^Lq
det. Paul Diederich, Luxembourg (	.2021)
Cyphobasidium crocodiicola Diederich & W. R. Buck,
sp. nov.
Diagnosis: Characterized by the basidiomata inducing brown,
convex, irregular galls with a strongly constricted base, 0.2-5
mm diam., on the thallus of Crocodia rubella, with ellipsoid
probasidia, 14-22 * 5.5-10 pm, cylindrical, 3-transseptale
meiosporangia, 50-70 pm long, 2.5-6.5 pm wide, short epi-
basidia, 1.5-2 pm thick and 2.5-4.5 pm long, and pyrifotm to
ellipsoid basidiospores, up to at least 10 * 4.5 pm.
Etymology: From Crocodia, the host lichen, and incola, dweller.
Type: New Zealand, South Island, Boyle River Lodge, 42¦31ÆS,
172¦23ÆE, Discaria toumatou groves on river-flat, Leptospermum
ericoides and L scoparium shrubland on terrace behind lodge
and Nothofagus, on Leptospermum scrub, on Crocodia rubella,
13 Sept. 1981, W. R. Buck 7000 (NY - holotype; BR - isotype).
MycoBank: MB844627
Basidiomata inducing the formation of brown, convex, often
irregular galls on the host thallus, with a smooth, often partly
NEW YORK BOTANICAL GARDEN
York Botanical Garden
04285316	OF	NEW	ZEALAND
? Tremella
on Pseudocyphellaria rubella (Hook.f. & Tayl.)
in Leptospermum scrub	D.	Galloway
SOUTH ISLAND:	Boyle	River Lodge. 172 23'E,
42¦31fS. Discaria toumatou groves on river-
flat- Leptospermum ericoides and L.scoparium
schrubland on terrace behind lodge and
Nothofagus 13 Sept 1981
Collected by William R. Buck 7000
I'JVoiWcK. kWK' _UOp
HOLothpvs
det. Paul Diederich, Luxembourg (0 ú-2022)
Cyphobasidium crocodiicola, New Zealand, holotype. A, Lunate conidia. B, Thick-walled probasidia with emerging meiosporangia. C, Meiospo-
rangia with epibasidia and basidiospores. D, Basidiospores. In phloxine. Scale bar: 10 pm.
concave surface and a strongly constricted base, 0.2-5 mm
diam. Context hyphae, subbasidial hyphae and clamps not
observed; haustoria absent. Hymenium containing numer-
ous probasidia that are rather indistinct in thin sections (in
phloxine), and are still difficult to observe in squash prepa-
rations using DIC optics, usually ellipsoid to elongate ellip-
soid, sometimes irregular in form with apparent outgrowths,
without a stalk-like base; basal clamp not observed. Basidia,
when mature, composed of an elongate ellipsoid, thin- to
thick-walled probasidium, 14-22 * 5.5-10 pm, often col-
lapsing after meiosporangium-production, and a cylindrical,
thin-walled, frequently deciduous meiosporangium (upper
part), 50-70 * 2.5-6.5 pm; upper part with 3 transverse
septa, each cell with a median epibasidium; epibasidia more
or less perpendicular to the basidium, subulate, 1 5-2(-2.5)
pm thick, 2.5-4.5 pm long, poorly to distinctively refiactive
at the apex. Basidiospores pyriform to ellipsoid, with no or
an indistinct apiculus at the lower end, only observed when
fixed at the basidium and then mostly immature, the largest
observed 10 * 4.5 pm; morphologically similar free-swim-
ming cells could not be identified with certainty as basidi-
ospores. Asexual stage: lunate conidia abundant, but conid-
iogenesis not observed and thus not certainly belonging to
this species, 2.5-3.5 pm thick, the entire conidia (considered
as an open ellipse) c. 8-10 x 7-8 pm.
Notes. This taxon is distinguished from the other gall-
inducing Cyphobasidium species developing on macroli-
Cyphobasidium crocodiicola, New Zealand, holotype. Basidiomatal
galls on the thallus of Crocodia rubella. Scale bar: 1 mm.
chens by the very small epibasidia, and the particularly
long meiosporangia (only C. usneicola has similar ones).
Ecology and host. On the thallus of Crocodia rubella.
Distribution. Oceania (New Zealand: South Island), known
only from the type locality.
Cyphobasidium crocodiicola
HOLOTYPE OF:
Cyphobasidium crocodiicola Diederich & W.R.Buck
See. Diederich, P., A.M. Millanes, A. Flakus, P. Rodriguez-Flakus, J. Etayo
and M. Wedin. 2022. Class Cystobasidiomycetes, order Cyphobasidiales.
Flora of Lichenicolous Fungi 1: 305-324. [on p. 309]
Det. J.C. Lendemer, 2022
04285316