PDD 119633 – Helotiales Nannf. 1932
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 119633
Specimen type:
Packet
Database record added:
18 January 2023
Database record updated:
17 February 2023
Components
Primary component
Active identification
Determined name:
Helotiales Nannf. 1932
Determiner:
P.R. Johnston
Identification date:
2023-01 (Verbatim: Jan 2023)
Preferred name:
Helotiales Nannf. 1932
Division:
Ascomycota
Class:
Leotiomycetes
Order:
Helotiales
Identification type:
Determination
Note:
ITS
Associations:
has host Celmisia
Substrate:
tomentum of living leaf
Other identifications
Identification
Determined name:
Hyaloscypha Boud. 1885
Determiner:
P.R. Johnston
Identification date:
2023-01 (Verbatim: Jan 2023)
Preferred name:
Hyaloscypha Boud. 1885
Determination uncertain:
yes
Active:
no
Identification type:
Determination
Note:
morphology
Other components
Active identification
Determined name:
Celmisia
Determiner:
Identification date:
Preferred name:
Celmisia
Division:
Tracheophyta
Class:
Magnoliopsida
Order:
Asterales
Family:
Compositae
Identification type:
Determination
Collection events
Primary collection event
Collection event type:
Field
Standard locality
Location:
Lewis Pass summit, Tarn Nature Walk
Georeferences:
Latitude and Longitude (WGS84):
-42.3667 172.4
Verbatim locality:
Lewis Pass summit, Tarn Nature Walk
Verbatim collector:
P.R. Johnston, E.M. Gibellini
Standardised collector:
Peter R. Johnston; E. M. Gibellini
Verbatim date:
31 Dec 2022
Start date:
2022-12-31
Country:
New Zealand
New Zealand Area Codes:
Buller
Specimen notes
Public Note:
DNA from dried apothecia, Helotiales incertae sedis, sister to KY462819, 'Helotium' uvidulum
Public Note:
Very small, sessile discs (no basal stipe at all) held within tomentum on living leaf. Dark walled, darker around edge of the cup. Edges of cup somewhat inrolled giving the opening the appearancde of a broad pore. Cells around edge of the cup long-cylindric but not free or hair-like, walls thickened, about 20-30 x 3-4 µm. Excipular cells away from the edge of the cup broad cylindric, 6-10 x 4-5 µm, wall slightly thickened, with scattered small crystals encrusting the cell walls in places. Apothecial wall 20-25 µm thick near margin, 12-15 µm thick elsewhere, of 4-5 rows of cells. Asci about 25-30 x 4.5-6 µm, cylindric-fusoid, tapering to small apex, wall thickened, well-developed p0ore extending all through wall, flaring to outside, ? croziers at base. Spores 10-12 x 1.5 µm, cylindric, more or less straight, ends rounded, 0-septate. Paraphyses 1.5 µm diam., undiff at apex, about same length as asci.
PRJ, Jan 2023
PRJ, Jan 2023
Public Note:
Apothecia forming within the leaf tomentum on the undersides of living leaves of alpine Asteraceae. Apothecia very small, sessile, cupulate to globose, margin rolled in across the top of the hymenium. Wall mostly pale, darker around edge of cup, where the excipular elements are thickly encrusted with dark brown material. Cells of excipulum thick-walled, wall hyaline, becoming long-cylindric and somewhat free towards the edge of the cup, otherwise short and broad cylindric. Asci broad-cylindric to subfusoid, tapering to small, slightly thickened, J+ apex. Paraphyses undifferentiated at apex.
Based on ascospore morphology there are at least four macromorphologically similar species in New Zealand:
PDD 119633 - ascospores narrow-cylindric, 10-12 x 1.5 µm
PRJ D210 - ascospores broad-elliptic, 1-septate, 15 x 5 µm
PDD 48934, PRJ D234 - ascospores short-cylindric, 3-septate, 12-18 x 3-3.5 µm
PRJ D222, PRJ D226, PRJ D236 - ascospores acicular, 3-6 septate, 30-50 x 1.5 µm
Based on an ITS sequence from dried specimen of PDD 119633, these fungi have an isolated position within Helotiales.
D205 and D211 may be the same genus, although notes suggest these specimens are immature
PRJ, Feb 2023
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