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Hydropisphaera peziza (Tode) Dumort. 1822

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Hydropisphaera peziza (Tode) Dumort., Comment. Bot. 90 (1822)
Hydropisphaera peziza (Tode) Dumort. 1822

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Indigenous, non-endemic
Present
New Zealand
Political Region

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(Tode) Dumort.
Tode
Dumort.
1822
90
Fr.
ICN
species
Hydropisphaera peziza

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SPECIMENS EXAMINED: NEW ZEALAND: Auckland Province, Auckland City, Orakei, on unidentified bark, McKenzie, Dec. 1948 (PDD 7491); same location, on Poria sp., McKenzie, Nov. 1948 (PDD 20068) ; Manukau County, c. 3 miles S of Kawakawa Bay, along track vic. Papakauri Hill, on bark of Nothofagus sp., Dingley & Samuels 73-81, 23 May 1973 (PDD 30878) ; Waitemata County, Waitakere Ranges, Piha Valley, on Rhopalostylis sapida Wendl. & Drude, Brook, Jan. 1956 (PDD 15910) ; Waitakere Ranges, Purewa Bush, on wood of Melicytus ramiflorus Forst., McKenzie, Apr. 1953 (PDD 14188); Waitakere Ranges, Titirangi, Woods Bay, on bark of Hoheria populnea A. Cunn., Dingley, 31 Mar. 1946 (PDD 5127).

CONIDIAL STATE: Acremonium sp.

Mycelium not visible, or white and growing around the perithecial bases; hyphae unbranched, septate, thin-walled, c. 4 µm wide, arising from the cells of the base of the perithecia. Perithecia solitary to gregarious, yellow to orange, globose to urniform, 370-420 µm high x (250-) 370-430 (-550) µm wide, becoming collabent when dry, not changing colour in 3% potassium hydroxide. Perithecial wall 30-50 (-70) µm thick. Surface view: cells circular, 10-15 µm in greatest dimension, thin-walled. Longitudinal section: outer region 15-30 (-50) µm wide, cells circular, 10-15 µm in greatest dimension, thin-walled. Inner region 15 µm wide, cells flattened and compacted, thin-walled. Perithecial hairs lacking, or short, triangular, orange; composed of a fascicle of septate, unbranched, thin-walled hyphae. Perithecial papilla lacking or short and acute; formed of narrow hyphal elements arising from the inner region of the perithecial wall; ostiolar canal periphysate. Asci clavate, (40-) 60-75 (-100) x (5-) 8-10 (-14) µm, 8-spored; apices flat, simple; bases pointed; ascospores biseriate above, uniseriate below, forming throughout the length. Ascospores ellipsoidal, (9-) 11-14 (-17) x (3-) 5-6 µm, equally 2-celled, striate or smooth, not constricted or slightly constricted at the septum, hyaline.

CHARACTERISTICS IN CULTURECMD : 1-5 cm diam., opaque, white to pale pink or pale brown, sparse aerial mycelium, margin slightly undulate, non-aromatic, medium non pigmented, perithecia forming within 1 month, homothallic. ME: 0.5-2 cm diam., opaque, white to pale pink, aerial mycelium sparse, margin undulate, nonaromatic, medium non-pigmented. OA: 1.5-7 cm diam., opaque, white to tan, flat, with hyphal rope-like strands, margin slightly undulate, non-aromatic, medium non-pigmented, perithecia forming within 1 month, homothallic. WAS: 1 cm in diam., translucent, nearly invisible, aerial mycelium lacking, margin slightly undulate, non-aromatic, medium non-pigmented. Phialophores forming only on CMD and OA from surface of agar and aerial mycelium, unbranched, monophialidic, aseptate or rarely sep tate, straight, smooth, (23-) 30-40 (-65) µm long, 2-3 µm wide basally, 1-2 µm wide at the unflared tip. Phialoconidia ellipsoidal becoming elongated, (3.5-) 7-9 (-13) x 3-4 µm, unicellular, hyaline, without a basal abscission scar; arising in basipetal succession, held in a hyaline drop of liquid at the tip of each phialide.

HABITAT: On decorticated wood, less frequently on bark, dung, decaying cloth, herbaceous tissues, and basidiocarps.
NOTES: Cultures were obtained from only one collection of N. peziza from New Zealand. The colonies grow more slowly than northern hemisphere isolates (Booth 1959, Gams 1971, Samuels 1976). The New Zealand isolate did not produce conidia. Morphologically the perithecia of the New Zealand collections cannot be distinguished from northern hemisphere collections.
Nectria peziza is common in the northern hemisphere and has many synonyms (Samuels 1976). It has been µmply described and illustrated by Booth (1959), Hanlin (1963), Gams (1971), and Samuels (1976).
Nectria peziza is closely related to N. suffulta. The usually smooth perithecial wall of the ascocarp of N. peziza is not as wide as the hirsute wall of N. suffulta. Short, inconspicuous hairs may occasionally arise from the perithecial wall of N. peziza, but they are apparent only under high magnification. N. peziza is temperate in distribution and homothallic whereas N. suffulta is tropical in distribution and heterothallic (Samuels 1976).
Superficially N. peziza resembles N. vulpina and N. manuka. It is readily distinguished from these two species by the thin-walled, globose cells that make up its much thicker perithecial wall.
According to Nannfeldt (1932) the type species of Perrotiella Naoumoff (P. uralensis Naoumoff), described as a discomycete, is N. peziza.

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Hydropisphaera peziza (Tode) Dumort. 1822
Hydropisphaera peziza (Tode) Dumort. (1822)
Hydropisphaera peziza (Tode) Dumort. 1822
Hydropisphaera peziza (Tode) Dumort.
Hydropisphaera peziza (Tode) Dumort. 1822
Hydropisphaera peziza (Tode) Dumort. 1822
Hydropisphaera peziza (Tode) Dumort. (1822)
Hydropisphaera peziza (Tode) Dumort. 1822
Hydropisphaera peziza (Tode) Dumort. (1822)

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taxonomic status
Has anamorph taxon Acremonium

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1cb1b347-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2001
12 November 2012
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