Telimenela ganreaena and Septogloeum oxysporum on grasses in Finland

Authors: Mäkelä, Kaiho & Koponen, Hilkka
Journal: Karstenia, Volume 15 (1976), pages 56-63.
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Abstract:  Material of this study consists of c. 4650 grass samples gathered on leys, field borders, yard swards, and forest meadows and seashore throughout the country during 1966-1974. Collections of Department of Plant Pathology, and Botanical Museum, University of Helsinki, and Mr. Pentti Alanko’s herbarium were also examined.
Telimenella gangraena (Fr.) Petr. was found on 28 samples of six grass species: Deschampsia caespitosa (L.) PB., D. flexuosa (L .) Trin., Festuca rubra L., Melica nutans L., Poa alpina L., and P. nemoralis (L.), throughout the country (60°- 69°N, 19°- 29°E), being most common on D. flexuosa in North Finland.
Ripe perithecia of the fungus were found by the authors on two specimens of D. flexuosa (collected in Aug. 1973), just after keeping them in refrigerator for six months. Besides, mature perithecia were refound on F. rubra and D. caespitosa, collected by Karsten in 1866 and 1867 (in Herb. H) . Mature perithecia were found only in the specimens collected in early spring and late autumn.
Septogloeum oxysporum Bomm., Rouss. & Sacc. was found on 58 samples of 12 grass species: Agrostis tenuis Sibth., A. canina L., A. stolonifera L., Alopecurus pratensis L., Calamagrostis arundinacea (L.) Roth, C. epigeios (L.) Roth, C. lapponica (WG). Hartm., Deschampsia flexuosa (L.) Trin., Festuca pratensis Huds., Melica nutans L., Poa nemoralis L., and P. pratensis L. throughout the country (60°- 69°N, 22-31 °E), being most common on A. tenuis and C. arundinacea, occurring only accidentally on the other gransses. Conidia of the fungus were found to be most abundant in June and August. The both fungi are of negligible importance.