Marisia - Maros Megyei Múzeum Évkönyve 32-34. (2014)
Botany
Silvia ORO IAN, Mihaela SÄMÄRGHIJAN 715. Trisetum flavescens (L.) Beauv. — Cozma, Färägäu, Herghelia, Ulie§; Arrhenatherion, Polygono-Trisetion, Pbyteumo-Trisetion, Molinio-Arrhenatheretea-, H, Euras (subMed); 2n=28, P; L TxUxRxN ; anemophily, endozoochory, anthropochory. ARALES ARACEAE 716. Arum maculatum L. — Ulie§; Fagetalia, Lathyro-Carpinion, Tilio-Acerion-, G, Eur (centr.&V)Med; 2n=56, P; L3T6U7R7Ng; entomophily, proterogyny, endozoochory. LEMNACEAE 717. Lemna minor L. — Cozma, Färägäu, Ulie§; Lemnetalia-, Hh, Cosm; 2n=40, 42, 50, P; Conclusions The floristic inventory of plants in the Transylvanian Plain includes 717 taxa, of which 693 species, 24 subspecies and 2 forms, distributed in 96 families, represents 20.45% of the total known spontaneous cormophytes in the current flora of our country. The flora analysis by ecological preferences shows the dominance of light species tolerant to part shade and of light species that tolerate shade only exceptional or temporary; of plants that prefer dry soils and moderately humid and moist; of species common in hillock and hilly areas, a xero-mesothermal flora specific to transition regions from plains to hills. According to soil reaction, the most common species are spread on the neutral soils, from slightly acidic to slightly alkaline. And according to nitrogen content of the soil, a significant percentage of plants are particularly spread on poor mineral nitrogen soil or on very poor nitrogen soil. Hemicryptophytes prevail in the bioforms spectrum, and in terms of floristic elements, we have noticed the predominance of Eurasian elements, with some tendencies towards mainlanders, followed by Europeans and Circumboreals. This area is also characterised by the presence of a significant contingent of Europeo-Mediterranean and Mediterranean species. The karyological analysis of the flora reveals a high number of diploids in this area, which forms the basis of allopolyploid speciation and demonstrates the age of this flora. On these old groups, new ones have developed, richer in polyploids, hence their high frequency. 33 taxa in various stages of endangerment were identified in the flora of the studied area. CONTRIBUTU LA STUDIUL FLOREI SPONTANE VASCULARE DIN CAMPIA TRANSILVANIEI (JUDEJUL MURE§) (Rezumat) Obiectivul acestui studiu este realizarea inventarului floristic al cormoflorei din Cámpia Transilvaniei (judeful Mures). Cämpia Transilvaniei este partea centralä a Depresiunii Transilvaniei si se intinde pe téri toriul a trei judefe: Bistrifa-Näsäud, Mures si Cluj. Pe teritoriul judefului Mures, Cämpia Transilvaniei, situatä la nord de Raul Mures, este о regiune formatä din dealuri cu altitudine medie de 400 m si este bräzdatä de väile largi ale afluenplor räului Mures. Ca о consecinm a localizärii regi unii, a diversitäpi formelor de relief (dealuri, lunci), a variatelor expozipi si inclinapi a versanplor Cämpia Transilvaniei se caracterizeazä printr-o mare diversitate de taxoni vegetali, inventarul floristic cuprinzánd un numär de 716 taxoni vasculari, incluzänd 692 spécii, 24 subspecii si 2 forme, repartizap in 96 de familii. 64
