¹ Gradina Botanica “A. Fatu” Iasi
² Universitatea “A. I. Cuza”, Facultatea de Biologie

Abstract: In this paper we point out the histo-anatomical peculiaritieas of the 1,2 and 3 years old stems of the three wooden lianas come from Extrem Orient cultivated as ornamental plants in Romania: Actinidia arguta (Sieb. et Zucc.) Miq. (familia Actinidiaceae), Akebia quinata (Houtt.) Decne. (familia Lardizabalaceae) and Schisandra chinensis (Turcz.) Baill. (familia Schisandraceae).The stems elongations of all of them are as results of the fibers and medullar rays lengths.

Key words: stems histo-anatomy, Actinidia arguta, Akebia quinata, Schisandra chinensis.

CARACTERE MICROSCOPICE PENTRU IDENTIFICAREA LEMNULUI LA UNII ARBORI ORNAMENTALI CULTIVATI ÎN GRADINA BOTANICA DIN IASI
LACRAMIOARA IVANESCU¹, RODICA RUGINA², CONSTANTIN TOMA¹, DIANA-ELENA MICU¹

¹ Universitatea “A. I. Cuza” Iasi, Facultatea de Biologie
² Gradina Botanica “A. Fatu” Iasi

Abstract: Les auteurs étudient la structure de xylème secondaire de quatre espèces d’arbre et arbrisseau exotiques (en appartiennent des genres Ailanthus, Paulownia, Phellodendron et Rhus) cultivés dans les conditions pedoclimatiques d’est de la Roumanie. Les individus analysés sont âgé de 40 et 50 années. Des coupes transversales et longitudinales (radiaires et tangentielles) ont été analysés sur le tronc, en suivrant: la disposition, le groupement et le diamctre des vaisseaux, leur nombre sur l’unité de surface, le type de parenchyme ligneuse, la fréquence, l’hauteur et la largeur des rayons médullaires, la quantité de libriforme etc.; pour toutes les espèces étudiées nous avons en égard tant la structure de xylème précoce tant que la structure de xylème tardif. Les distinctions en ce qui concerne la structure des individus cultivés dans le Jardin Botanique de Iasi et les données qui sont trouvées dans la littérature specialisée sont seulement d’ordre quantitative; elles se référent a l’épaisseur des anneaux annuelles, le rapport entre le xylème précoce, xylème tardif, la quantité de libriforme et son degré de lignification.

Key words: la structure de xylème secondaire, Ailanthus, Paulownia, Phellodendron, Rhus.

STUDII DE MORFO-BIOMETRIE SI ANATOMIE A GLANDELOR NECTARIFERE EXTRAFLORALE LA UNELE SOIURI DE PRUNUS AVIUM L.
VIOLETA TANASESCU¹, RODICA RUGINA¹, C. TOMA²

¹ Gradina Botanica “A. Fatu” Iasi
² Universitatea “A. I. Cuza” Iasi

Abstract: This paper present the results of the morphology and anatomy of the extrafloral nectarifers glands at the Prunus avium L, species in different phases of the development. At the same time it is marc an account about Prunus avium L., sorts with genetical different bases. This researches pursued the diagnostical characters in taxonomical purpose.

Key words: anatomy, extrafloral nectarifers glands, Prunus avium L., sorts.

¹ Gradina Botanica “A. Fatu” Iasi

Abstract: In this work we point out the histo-anatomical peculiarities of the green leaves belonging to Aspidistra elatior Bl. and Ophiopogon jaburan (Sieb.) Lodd. and the variegated leaves of the Aspidistra elatior Bl. ‘Variegata’ and Ophiopogon jaburan (Sieb.) Lodd. ‘Variegatus’.

Key words: histo-anatomy, green and variegated leaves, Aspidistra, Ophiopogon.

¹ Gradina Botanica “A. Fatu” Iasi
² Universitatea “A. I. Cuza” Iasi, Facultatea de Biologie
³ Institutul de Cercetari Biologice

Abstract: The authors present the influence of the pest treatment (Fastac, Sanazole, Topsin) on the Crysanthemum varieties. The paper present the plant responde at the attack of the patogen agents (Septoria chrysanthemela Sacc., Erysiphae cicoraceorum DC.). Plant repond is analised by: the contents of the assimilatory pigments the amount of the dry substance, the dynamics of the all glucides and each of them; the activity of the peroxides. These physiological indexes were followed at the control plants and the treatment plants in the cuttings and bloom phases.

Key words: Chrysanthemum varieties, treatments, physiological indexes

¹ Universitatea de Stiinte Agricole si Medicina Veterinara, Bucuresti
² Muzeul Olteniei - Craiova

Abstract: L’ auteurs présentent un espéce nouvelle dans la flore de Roumanie.

Key words: Ranunculus neapolitanus, flore Roumanie.

¹ Universitatea de Stiinte Agricole si Medicina Veterinara, Bucuresti

Abstract: The author publishes the following new taxa in the Romanian flora: 1.Lemna minuta Humb., Bonpl. et Kunth; 2. Anemone narcissifolia L. subsp. biarmiensis (Juz.) Jalas; 3. Centaurea napulifera Rochel subsp. thirkei (Schultz Bip.) Dostál; 4. Trapa natans L. subsp. muzzanensis (Jäggi) Schinz. În the same time the occurrence in Romania of the taxa: 1. Centaurea napulifera Rochel subsp. napulifera and 2. C.napulifera subsp. tuberosa (Vis.) Dostál is denyed.

Key words: floristical novelties, floristical denies, Romanian Flora

¹ Universitatea de Stiinte Agricole si Medicina Veterinara, Bucuresti
² Gradina Botanica “A. Fatu”, Iasi

Abstract: The authors make a first proposal - to remove the species Astragalus glaucus Bieb. from the Romanian Flora. Also, the authors make an other proposal here – to subordinate the taxa Astragalus publiflorus DC. at A. excapus L.

Key words: new proposals, remove Astragalus glaucus, subordination, Astragalus pubiflorus, Astragalus excapus

" Universitatea “A. I. Cuza “ Iasi, Facultatea de Biologie

Abstract: La détérioration de l’environement et la diminuation des surfaces des fôrets, ajoutés aux agression humaines dans les écosystèmes naturels imposent des mesures urgents ayant comme but la pré-servation des habitats et de la biodiversité et aussi de mettre fin aux efects destructifs de toute sorte.
Par la protection de la mycobionte des marais oligotrophes on poursuit la stabilisation des espèces des champignons qui pourraient être inscrites sur une liste rouge preliminaire. Cette liste imposera l’inclusion des ces taxons dans les categories qui sont considérées comme ménacées.
Cette initiative est nécessaire pour adapter la législation de notre pays aux normes internationales concernant la préservation de la biodiversité.
Les marais oligotrophes étant inscrites dans les zones forestières de la premiere groupe de protection absolue, la protection de toutes espèces des champignons caractéristiques à ces ecosystèmes, en particulier des ceux ménacées par l’extinction s’imposé.

Key words: macromycètes, marais oligotrophes, la Dépression Dornelor

¹ Universitatea “A. I. Cuza” Iasi, Facultatea de Biologie
² Gradina Botanica Iasi

Abstract: Les observations sur la diversité mycologiques met en évidence la présence dans les écosystèmes étudiés de 105 espèces des champignons. Parmi eux, 52 espèces sont considérées patogènes, la plupart sont parasites sur des arbres, des arbustes et des plantes herbacées. 61 sont des espèces des macromycètes des forêts des charmes et hêtres (Cretestii de Sus) et des rouvre (Quercus dalechampii) du Cretestii de Sus, Barbosi, Padureni et Urlati.

Key words: biodiversité, mycobionta, écosystème forestier, le Plateau Bârlad

¹ Institutul de Cercetari pentru Protectia Plantelor, Bucuresti
² Institutul de Cercetari si Amenajari Silvice – Statiunea de Cercetari si Productie Silvica, Cluj-Napoca

Abstract: Establishing in vitro parameters of fungal development (carbon sources, nitrogen sources, reaction of culture medium) in the Laboratory of Mycology at Research Institute of Plant Protection Bucharest it was concluded that:
- the most favourable carbon sources for the development of Ph. occulta proved to be monosaccharides: manite, glucose (dextrose), arabinose and dulcite, the disaccharide saccharose (fructose) and the polysaccharide starch;
- the most favourable nitrogen sources were the aminoacids: L-norvaline and L-leucine, the amide L-asparagine and among salts ammonium sulphate;
- the most favourable pH values of culture media between 4.0 and 6.5.

Key words: Phomopsis occulta, conifers dieback, developmental parameters in vitro, carbon and nitrogen sources, pH of culture media

¹ Universitatea “A. I. Cuza” Iasi, Facultatea de Biologie

Abstract: This paper synthesises the information regarding the Class Querco-Fagetea from Moldavia (Romania) and compares this information with the one from the other Romanian provinces. The conclusion is that certain Moldavian syntaxons are substantially different from other-provinces equivalents.

Key words: Querco-Fagetea Class, Moldavia (Romania)

¹ Universitatea “Al. I. Cuza” Iasi, Facultatea de Biologie
² Gradina Botanica “A. Fatu” Iasi

Abstract: The authors describe the vegetation on sand banks of Saele-Istria and Chituc. There were identified other thirty-four vegetal associations, all of these being new for those two investigated areas. Also, there were proposed, for the first time, three new coenotaxons, namely:
1. Ass. Festucetum arenicolae ass. nov.; 2. Ass. Limonio bellidifolii-Puccinellietum convolutae ass. nov.; 2a. subass. parapholietosum incurvae subass. nov. 3. Ass. Orchido-Schoenetum nigricantis Oberd. 1957; 3a. subass. plantaginetosum cornuti subass. nov.

Key words: maritime sand banks, vegetation, new coenotaxons

¹ Universitatea “A. I. Cuza” Iasi, Facultatea de Biologie
² Gradina Botanica “A. Fatu” Iasi

Abstract: As a result of geobotanical researches made on Cernovca River Island (Danube Delta Biosphere Reserve), we present a number of 27 aquatic and mire vegetal associations. For every of these, the specific features, the floristic structure, and composition are also given out.

Key words: Danube Delta, aquatic and mire vegetation

¹ “Al. I. Cuza” University, Faculty of Biology, Department of Plant Biology, Iasi, Romania
² „Anastasie Fatu” Botanical Garden, Iassy, 7 – 9 Dumbrava Rosie Str., Romania

Abstract: Betula nana L. is a species spreaded on circumpolar-northern area. This species is, also, present into the Romanian flora as a relictic one, being met only in two places, namely: the peat-bog Luci, Harghita county, and the peat-bog Lucina, Suceava county. It seems that species reach its southern worldwide range in Romania (in the Natural Reserve Luci), at 46º17'40" northern latitude, and at 1.080 m. s. l.
The authors analyse flora and vegetation from the 2nd place where is met Betula nana L. in Romania: the Natural Reserve Lucina-Gaina. There, Betula nana L. make up a well-defined population on a one ha surface of that natural reserve. Also, in the paper there is a proposal of a new status for that vegetal association, edificated by Betula nana L., and having as a characteristic species, Eriophorum vaginatum L.

Key words: relict, peat-bog, association, Betula nana L.

Universitatea “A. I. Cuza” Iasi, Facultatea de Biologie

Abstract: Après la caractérisation d'espèce Menyanthes trifoliata du point de vue morfologique, on présente, d'une manière synthetique, les conditions stationelles de la zone étudiée.
On décrit, par la suite, ayant pour la base le tableau phytocénologique 1, qui contient 6 relevées, la composition cénotique et écologique d'association Carici-Menyanthetum Soó (1938) 1955, al. Magnocaricion, cl. Phragmitetea, dans lequel fait partie la végétation de notre station.

Key words: menyanthes trifoliata, loyer

Gradina Botanica “A. Fatu” Iasi

Abstract: This paper describ 16 taxons which were introduced recently in the Rosarium from Botanical Garden of Jassy.

Key words: rose varieties, rose species

¹ Gradina Botanica “A. Fatu” Iasi

Abstract: It analysed the chorology of 12 taxons having a special (particular) status in the Romanian flora ( Alyssoides utriculata ssp. graeca, Anthericum liliago, Iris graminea ssp. brandzae, I. sibirica, Linum uninerve, Lychnis viscaria ssp. atropurpurea, Menyanthes trifoliata, Petrorhagia saxifraga, Prangos carinata, Pulsatilla vulgaris ssp. grandis, Scutellaria orientalis ssp. sosnovskyi, Sedum album ). The areal bounds was included in three map. All of these taxons are cultivated in Botanical Garden of Iasi.

Key words: protected taxons, chorology

¹ Gradina Botanica “A. Fatu” Iasi

Abstract: Green spaces from most of the Moldavian cities are smaller than standars areas.

Key words: green areas

¹ Institutul de Geografie al Academiei Române, Bucuresti, Colectivul de Biogeografie
² Ocolul Silvic Grivita, Jud. Vaslui, Directia Silvica Focsani

Abstract: In the glade of Tihulesti (Talasmani) Woods in the north of Galati County, one finds 22 secular trees (oak, beech and ash species). Some of them stand in the yard of the children's camp, some others grow along the Budai Brook. Their age ranges between 140 and 400 years (4 specimens - 140 years; 3 specimens - 150 years; 7 specimens - 200 years; 6 specimens - 300 years and 2 specimens - 400 years). Height goes from 18 m to 30 m. Apart from the above, two more secular tree specimens did exist in this perimeter: a beech - tree (126 years old) destroyed in l983 and an oak - tree (133 years old) destroyed in 1998. The vegetation of secular trees is good, given that they are protected under the Galati County Council's Decision No. 46/Nov. 10, 1994.

Key words: protected secular trees, Tihulesti - Beresti Woods (Galati County).