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Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914

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Clypeostroma spilomeum (Berk.) Theiss. & Syd., Ann. Mycol. 12 272 (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914

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Endemic
Present
New Zealand
Political Region

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(Berk.) Theiss. & Syd.
Berk.
Theiss. & Syd.
1914
272
ICN
NZ holotype
species
Clypeostroma spilomeum

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Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914

ITS, LSU, and mtSSU gene trees for Clypeostroma together with GenBank accessions selected from BLAST search results. The two Clypeostroma spp. appear to be congeneric. Johnston (NZJBot 40: 265-268, 2002) earlier noted that based on morphology they may represent different genera. The phylogenies from the three genes support their position in the Teratosphaeriaceae. ML-like trees generated using FastTree in Geneious. [PRJ, Oct 2018]
Orbicularis, convexa (1-1/2 mm. diam.) atra, glabra, subnitida, intus olivacea. Ascis clavatis, subsessilibus, octosporis, sporidiis oblongis, uniseptatis, medio leniter constrictis, dilute olivaceis, 22 x 5 µ.
On leaves of Veronica elliptica. New Zealand. (Kirk, 338.)

Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914

SPECIMENS EXAMINED: NEW ZEALAND: AUCKLANDISLANDS: on Hebe elliptica (as Veronica elliptica), K (M 85261) ex Herb. Berk. - Holotype of Dothidea spilomea; on H. elliptica (as V. elliptica), J. D. Hooker, PDD 61540 ex Reliquiae Petrakianae 821 - Isotype of Dothidea spilomea;Ewing Island, on H. elliptica (as V. elliptica), J. Kirk 338, K (M 85262) - Holotype of Rhytisma discoidea; Enderby Island, Sandy Bay, on H. elliptica, P. R.Johnston AK65, 21 Mar 2000, PDD 73062. CAMPBELL ISLAND: Shoal Point, on H. elliptica,P. R. Johnston CAM 157 & S. L. Stephenson, 16 Mar 2000, PDD 73063; Mt Honey, on H. elliptica, P. R.Johnston CAM 165 & E. H. C. McKenzie, 7 Mar 2000, PDD 73064. STEWART ISLAND: Deep Cove, on beach, on H. elliptica, P. R. Johnston & E. M. Gibellini, 11 Jan 1998, PDD 68726; DeepCove, on beach, on H. elliptica, P. R. Johnston &E. H. C. McKenzie, 19 Nov 1998, PDD 69731; Ulva Island, Boulder Beach, on H. elliptica, P. R. Johnston & E. H. C. McKenzie, 21 Nov 1998, PDD 69732. NORTH ISLAND: Wellington, on Hebe sp.(as Veronica sp.), H. Cockayne, 1908, PDD 451.
Ascomata developing and maturing on lower surface of living leaves, forming black, tar-spot-like symptoms, more or less round in outline, 0.7-1.4 mm diam., slightly raised, tapering gradually to margin,often with numerous ascomata on a single leaf; no chlorosis of surrounding leaf tissue. Ascomatal surface black, more or less smooth, with tiny, round ostioles barely visible. Ascomata subcuticular, not becoming erumpent, with several pseudothecia covered by a single clypeus. Pseudothecia more or less globose, 70-80 µm diam., wall 8-10 µm thick, comprising 2-3 rows of cylindric, flattened cells with pale brown, thin walls; opening through a simple, round ostiole at apex. Upper part of pseudothecial wall merging with clypeus. Clypeus subcuticular, up to 35 mm thick, comprising 3-4 rows of angular cells with dark, thick walls. Scattered hyphae with thin, hyaline walls forming beneath clypeus, between and below pseudothecia and amongst the largely intact cells of the host leaf. Asci 90-105 x 15-20 µm, cylindric to subsaccate, tapering abruptly to small, foot-like base, and gradually to rounded apex, fissitunicate, 8-spored. Ascospores (23-)25.5-34.5x 6-7 µm, cylindric, 1-septate, constricted slightly at the more or less central septum, upper cell slightly wider than lower, rounded at apex and base, wall becoming pale brown, sometimes finely punctate.Paraphyses not seen.

Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914

Loculi immersi subepidermales, discreti, sphaerioidei, stromato epidermali clypeiformi juncti, ostiolo atypico dehiscentes. Asci octospori, aparaphysati. Sporae fuscidulae (demum obscure brunneae?) 4-cellulare

Beide Kollektionen wurden auf den Auckland-Inseln gesammelt auf Blättern von Veronica elliptica and stellen genau denselben Pilz dar. Die Phyllachora-artigen Stromata sind kreisförmig, scharf umrandet, halbglänzend, leicht gewölbt, etwa 1 mm im Durchmesser, schwarz; Oberfläche feinkörnig. Das Stroma erfüllt als Clypeus die Epidermis; die perithezienartigen Gehäuse liegen einzeln, aber ziemlich dicht gedrängt unter der Epidermis, im oberen Teil mit dem Stroma verwachsen und dort auch unter sich stromatisch verbunden, im unteren Teil untereinander frei; Wand gut differenziert. Bei der Reife bricht die stromatische Deckschicht erst mit einer feinen Öffnung auf, welche nachträglich durch weiteres Auseinanderweichen der Ränder sich stark vergrössert. Paraphysen fehlen. Die Schläuche sind nur ganz kurz gestielt, am Grunde bauchig nach oben sehr allmählich sich verengend and über den unteren sporenführenden Teil weit ausgezogen. Sporen 2-3-reihig, länglich schmal zylindrisch, vierzellig, 30-34 ´ 6-7 µm, in jeder Zelle einen grossen rundlichen Öltropfen führend, an den Enden nicht spitz, höchstens am oberen Ende etwas zugespitzt. Die Fruchtschicht ist noch jung, viele Sporen noch farblos, zweizellig oder noch einzellig, die vierzelligen schon tiefgolden oder bräunlich, bei der Reife zweifellos braun.

Von Telimena Rae. weicht die Gattung durch gefärbte and gleichzellige Sporen ab, ferner durch Form and Lage der Gehäuse.

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Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd.
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
Clypeostroma spilomeum (Berk.) Theiss. & Syd. (1914)
Cocconia discoidea (Cooke & Massee) Sacc.
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914

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Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
New Zealand
Auckland Islands
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
New Zealand
Campbell Island
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
New Zealand
Stewart Island
Clypeostroma spilomeum (Berk.) Theiss. & Syd. 1914
New Zealand
Wellington

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1cb1ad47-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
17 February 1999
19 October 2012
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