Zgorzel pędow borówki wysokiej wywołana przez grzyb Godronia cassandrae f. vaccinii (Peck.) Groves [The canker of highbush blueberry caused by Godronia cassandrae f. vaccinii (Peck.) Groves]

<i>Fusicoccum</i> canker of highbush blueberry was first detected in 1973 in Poland. The diseases appeared on the shoots of variety Jersey in the collection of the Department of Pomology, Agricultural University, Warsaw-Ursyn6w. The disease was caused by the fungus <i>Godronia cassandrae</i> f. <i>vaccinii</i> {Peck.) Groves. The conidial stage is known as <i>Topospora myrtilli</i> (Felfch.) Boermema syn. <i>Fusicoccum putrefaciens</i> Shear.

Mycoflora of the trees and shrubs in the yew reservation Wierzchlas

The author has collected 50 species of fungi. As a result the full life cycle has been studied in 3 species, 28 species occurred only in the conidial stage and 16 species only in the generative stage.

Supplementary notes to the biology of Cordyceps entomorrhiza (Dicks. ex Fr.) Link and the morphology of its conidial stages

<i>Cordyceps entomorrhiza</i> develops on the larvae, pupae and adults on the ground beetles <i>Carabus</i> spp. (<i>Coleoptera, Carabidae</i>) and on the bugs (<i>Heteroptera, Nabidae</i>) ot the genera <i>Himacerus</i> Wolff et <i>Nabis</i> Latr. There are two forms of the conidial sporulation of this fungus with an identical sporogenesis type (<i>Phialosporae</i>) but different as to the arrangement of sporogenous cells (<i>Tilachiadtopsis</i> and <i>Hymenostilbe</i>-like) The names <i>Tilachlidiopsis hippotrichoides</i> (Lindau) Keisler and <i>T. nigra</i> Yakushiji et Kumazawa should be treated as synonymous; they refer to the conidial stage of <i>C. entomorrhiza, Hirsutella dla eleutheratorum</i> (Nees ex Fr.) Petch — contrary to the hitherto existing notion — is not connected with the above mentioned fungus. It constitutes a separate species, close to or identical with <i>H. entomophila</i> Pat.

Observations on the occurrence of Erysiphales on cucumbers in Poland

In the years 1974-79 in Skierniewice and in 12 other places <i>Erysiphe cichoracearum </i>DC (imperfect stage) was observed on cucumbers in 1979 both <i>A. cichoraceum</i> and <i>Sphaerotheca fuliginea</i> were found in Skierniewice, Zielonka and Gołębiewo. Then were distinguished in the conidial stage mainly on the basis of differences in conidial germination and the presence or absence of fibrous bodies, and in the perfect stage on the basis of the number of asci in peridia and the number of spores per ascus.

Anatomical changes in the stems of highbush blueberry (Vaccinium australe Small), caused by the fungus Godronia cassandrae f. vaccinii (Peck) Groves

Some histological changes were observed in blueberry stems infected by the fungus <i>G.cassandrae</i>. Dead cells of subepidermal collenchyma and cortical parenchyma filled with brown flocculent deposits were seen in the lesion areas. Pycnidia characteristic for the conidial stage of the fungus (<i>Topospora myrtilli</i>) were found in the collenchyma layer. The diseased tissues were found to be separated from the healthy ones by a layer of cork cells which was initiated under the epidermis and ended under the pericycle. Beneath this cork layer lamellar collenchyma and collenchyma-like phelloderma formed. Similar histopathological changes were observed in blueberry stems infected by seven other fungi.

Two new Ophiostoma species lacking conidial states isolated from bark beetles and bark beetle-infested Abies species in Japan

Two ophiostomatoid fungi without conidiophores and conidia were isolated from bark beetles and bark beetle-infested Abies spp. The teleomorph characters were similar to species of Ophiostoma, but the absence of the conidial stage hampered their exact generic assignment. Detailed morphological observations and molecular analysis clarified their generic affiliation. Consequently, they were placed in the genus Ophiostoma , but their morphology and DNA sequences did not coincide with any other species of Ophiostoma. Here, we propose these two species as Ophiostoma aoshimae sp. nov. and Ophiostoma rectangulosporium sp. nov. The former species is characterized by perithecial necks ornamented with projections and ellipsoid to oblong ascospores, and the latter species is characterized by perithecial necks ornamented with rectangular ascospores and white colonies.