Volume 20-21/1990-1991

The Laccaria species of Transylvania (in French)

pp 5-16 Pazmany D.

New data regarding hypogeous mushrooms of Romania (III) (in German)

pp 17-21 Pap G., D. Pazmany, Zs. Misky

Survey of hypogeous fungus Transylvanians (in Latin)

pp 23-36 Pazmany D.

Features of the Broad Bean Vicia faba L., growing in Transylvania. Diseases and pests (in French)

pp 37-43 Stana Doina, I. Ghizdavu

Entomofauna of Centaurea sp. and their economic importance (in English)

pp 45-53 Perju T., I. Moldovan

Dubious or disappeared phanerogamic species from Romania (in Romanian)

pp 55-62 Pazmany D., Eugenia Chirca

Research on the biology of Echinacea pallida Nutt. and Echinacea purpurea (L.) Moench (II) (in French)

pp 63-72 Muntean L., A. Salontai, C. Botez, M. Tamas, S. Cernea, G. Morar, F. Vaida

Competition between Medicago sativa and Dactylis glomerata in mixed culture (in Romanian)

pp 73-80 Rotar I., A. Moldovan

The chlorophyllian and carotenoidical pigments content variations in the fresh and dryed leaves of Taraxacum officinale depending on some drying conditions and of the harvesting period (in Romanian)

pp 81-87 Tabacaru C., Carmen Socaciu, G. Neamtu

Research regarding the medium contents for "in vitro" meristem micropropagation of grape vine (in French)

pp 89-95 Suciu T., Stefania Gadea, O. Henegariu