NEW CONTRIBUTIONS TO THE STUDY OF AQUATIC AND PALUDAL FLORA FROM RIVER MORIŞCA (BOTOŞANI COUNTY) Corneliu TĂNASE 1* Introduction

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1 Analele Ştiinţifice ale Universităţii Al. I. Cuza Iaşi s. II a. Biologie vegetală, 2012, 58, 1: ISSN: , E-ISSN: NEW CONTRIBUTIONS TO THE STUDY OF AQUATIC AND PALUDAL FLORA FROM RIVER MORIŞCA (BOTOŞANI COUNTY) Corneliu TĂNASE 1* Abstract: This paper contains preliminary results obtained in the period , materialized in floristic list, and analysis of aquatic and paludal flora in the territory Morişca Valley on the river Morişca. The floristic list (aquatic and paludal plants) contains species of plants that were not cited in these locations from hydrographic basin Morişca Valley. We recorded 265 species of vascular plants and analyzed their taxonomy and composition of floristic elements and ecological indeces. Keyworks: aquatic and paludal plants, Morişca Valley. Introduction Morişca Valley is located in the Botoşani County in northeast Plain Moldavia, with an area of 224 square kilometers. It is characterized by the general orientation of the valleys to the north-west to south-east, with frequent asymmetry due to geological structure. The frequency of categories of altitude shows that most hills have heights ranging from 140 to 200 m. The most common soils are chernozem category in various stages of evolution (Băcăuanu, 1968). Hydrographic network for Morişca Valley is characterized by the presence of a chain of ponds met along the river Morişca (Pantazică, 1974). Morişca Valley has its origin in the forest Crow, near Dorohoi. It can be considered a stream with permanent flow regime mainly due to the leakage from fish ponds: Lipovanul and Iazul Mare of Brăieşti, Staruşte and Jianu of Roma, Iazul Domnesc (Melik) and Ghidu, fish nursery, Pârlogeanu ponds and Popăuţi of Costeşti and Stăuceni ponds (Tănase and Ştefan, 2010). The region is located in an area with excessive temperate - continental. The annual average precipitation is mm, prevailing winds are from north east (Uliciuc, 2004). From the above data result that Morişca Valley is located in an area with excessive continental climate, characterized by large temperature variations, while unevenly distributed rainfall and torrential character, violent winds accompanied by blizzards in winter season and prolonged droughts in summer (Tănase and Ştefan, 2010). Materials and methods The identification and taxonomical classification of the vascular plants were accomplished using a series of guides (Ciocârlan, 2000; Chifu et al. 2006). The floristic list presents the species alphabetically sorted after family, author, the subspecies where it exists and location. The following abbreviations were used in naming the villages where the recorded plant species were found: Dealul Mare DM, Văculeşti Vac., Brăieşti Bra., Cotârgaci Cot., Roma Rom., Nicşeni Nic., Costeşti Cos., Roşiori Ros., Stăuceni 1* Al. I. Cuza University of Iasi, Faculty of Biology, Carol I Bd., no. 20A, , Iasi, Romania, tanase.corneliu@yahoo.com

2 Sta., Victoria Vic. The phytogeographical category of each species was indicated according to the most recent monograph of Moldavian flora and vegetation (Chifu et al., 2006). The establishment of the bioforms and floristic elements was made on the basis of both Flora ilustrată a României. Pteridophyta et Spermatophyta, by Ciocârlan (2000), and the synthesis worked out by Sanda et al. (1983), Popescu and Sanda (1998), Sanda, Biţă- Nicolae, Barabaş (2003). The proportion of each category was presented as a spectrum. Results and discussions The floristic list includes the following species: Fam. EQUISETACEAE: Equisetum arvense L. - Cos., Cot., Nic., Rom.; E. fluviatile L. - Cot.; E. hyemale L. - Cot., Vac.; E. palustre L. - Cos., Cot., Rom., Vac.; E. pratense Ehrh. - Nic.; E. telmateia Ehrh. (E. maximum auct), - Cos., Sta.; Fam. APIACEAE: Aegopodium podagraria L. - Cos., Rom., Vac.; Anthriscus cerefolium L. Hoffman subsp. cerefolium - Cos.; Barbarea vulgaris L. - Cos. (Iazul Melik), Cot., (Iazul Mare), Rom.; Berula erecta (Hudson) Coville (Sium erectum Hudson) - Cos., Cot., Rom.; Cicuta virosa L. - Cot., Rom.; Oenanthe aquatica L. - Cot.; Sanicula europaea L. - Cot., Cos., Nic.; Silaum silaus L. - Cot. (Iazul Mare); Sium latifolium L. - Cos., Cot., Rom., Sta.; Fam. AMARANTHACEAE: Amaranthus blitum L. - Cot.; A. retroflexus L. - Cos., Cot., Nic., Rom., Sta.; Fam. ASTERACEAE: Achillea millefolium L. subsp. millefolium Cos., Vic.; Arctium lappa Mill. - Cos., Cot., Nic., Rom., Vac.; Aster tripolium L. subsp. tripolium - Cos., Rom.; Bidens cernua L. - Cos., Nic., Ros.; B. tripartita L. - Cos., Cot., Vac.; Carduus acanthoides L. - Cos., Cot., Ros., Rom., Vac.; Centaurea cyanus L. - Cos., Cot., Rom.; C. jacea L. - Cot., Sau., Vac.; Cichorium intybus L. subsp. intybus - Cos., Cot., Dim., Dor., Sau., Rom., Ros.; Cirsium arvense L. Scop. Cos., Cot., Dim., Dor., Rom., Vac.; C. oleraceum L. Scop. - Cos., Cot., DM., Nic., Pop., Vac.; C. vulgare (Savi) Ten. (C. lanceolatum (L.) Scop. non Hill) - Cos., Cot., Pop., Rom., Vac.; Conyza canadensis (L.) Cronq. (Erigeron canadensis L.) - Cos., Cot., Nic., Sta., Rom.; Crepis biennis L. - Cos.; Erigeron annuus (L.) Pers subsp. annuus (Stenactis annua (L.) Less.) - Cos., Cot., DM., Nic., Rom., Vac.; Eupatorium canabinum L. - Cot., Vac.; Galinsoga parviflora Cav. - Cos., Cot., Dor., Rom., Ros., Sta.; Inula britanica L. - Cos., Cot., Dac., Dim., Dor., Pop.; Matricaria discoidea DC. (M. matricarioides (Less.) Porter p.p.) - Cot., DM., Sau.; M. perforata Mérat (M. inodora L. nom illegit., Tripleurospermum inodorum Schultz Bip.) - Cos., Cot., DM., Dor., Pop., Rom.; Pulicaria vulgaris Gaertner. - Cos., Cot., Rom., Vac.; Senecio erucifolius L. - Cot.; S. fluviatilis Wallr. (S. sarracenicus L.) - Cot.; S. ovatus (P. Gaertner, B. Meyer & Scherb.) Willd. (S. fuchsii C.C. Gmelin) - Sta.; S. paludosus L. - Cos., Cot.; S. vulgaris L. - Cot., DM., Dim., Sau., Vac.; Serratula tinctoria L. - Cot.; Sonchus arvensis L. subsp. arvensis - Cos., Rom., Vac.; S. asper (L.) Hill. - Cos., Cot., Dac.; S. oleraceus L. - Cos., Pop., Sta.; S. palustris L. - Cot., Sta.; Taraxacum bessarabicum (Hornem.) Hand-Manzz. - Cot., Dim., Rom.; T. officinalis (L.) Weber. - Cos., Cot., DM., Pop., Rom., Ros., Sau., Vac.; Tussilago farfara L. - Cos., Cot., Dac., Dor., Nic., Rom., Sta., Vac.; Xanthium italicum Moretti - Cos., Cot., Dor., Rom., Sta.; X. strumarium L. Cos., Cot., Dac., DM., Dor., Nic., Rom., Pop., Vac.; Fam. BORAGINACEAE: Myosotis arvensis Hill subsp. arvensis - Sta., Vic.; M. scorpioides L. (M. palustris (L.) Hill) - Cos., Cot.; M. sylvatica Ehrb. Ex. Hoffman - Cos., Cot., Nic., Rom., Sta.; Symphytum officinale L. subsp. officinale - Cos., Cot., DM., Rom., Vac.; Fam. BRASSICACEAE: Barbarea vulgaris R. Br. subsp. vulgaris - Cot.; Brassica nigra (L.) Koch - Cot.; Capsella bursa-pastoris (L.) Medik. - Cos., Cot., Dac., Dor., Nic., Pop., Rom., Sau., Vac.; Lepidium latifolium L. - Pop., Vic.; Rorippa amphibia (L.) Bedder - Cos., Cot., Vac.; R. austriaca (Crantz) Besser - Cos., Cot., Rom., Vac.; R. palustris (L.) Besser (R. islandica (Oeder) Borbás) - Cot., Vac.; R. sylvestris (L.) Besser subsp. sylvestris - Cos., Dor., Sau., Vac.; Sinapis arvesis L. - Cos., Dac., Dor., Rom.; Fam. CALLITRICHACEAE: Callitriche palustris L. - Cos., Cot.; Fam. CAPRIFOLIACEAE: Sambucus ebulus L. - Cos., Cot., Dac., Dor., Nic., Pop., Rom., Vac., Vic.; 74

3 Fam. CARYOPHYLLACEAE: Cerastium dubium (Bast) Guépin (C. anomalum Waldst & Kit) - Cot., Pop., Rom., Sta., Vac.; C. holosteoides Fries. - Cos., Pop.; Lychnis flos-cuculi L. - Cos., Pop., Sta.; Saponaria officinalis L. - Cot., Vac.; Spergularia media (L.) C. Presl. (S. maritima (All.) Chiov.) - Cos.; Stellaria aquatica (L.) Scop. (Myosoton aquaticum (L.) Moench) - Cos., Cot., Rom., Vac.; S. holostea L. - Cos.; S. palustris Retz - Cot., Nic.; Fam. CERATOPHYLLACEAE: Ceratophyllum demersum L. subsp. demersum - Cos., Cot., Dac., Nic., Rom.; C. submersum L. - Cos., Sta.; Fam. CHENOPODIACEAE: Atriplex prostrata Boucher ex DC. (A. hastata auct.) - Vic.; Chenopodium album L. - Cos., Cot., Nic., Rom.; C. botrys L. - Cot.; C. glaucum L. - Dor., Nic., Rom., Vac.; C. polyspermum L. - Cos., Nic., Rom.; Suaeda maritima (L.) Dumort. subsp maritima - Cos.; Fam. CONVOLVULACEAE: Calystegia sepium (L.) R. Br. - Cos., Cot., Dor., Nic., Pop., Ros., Rom., Vac.; Convolvulus arvensis L. - Cos., Cot., Dac., Dim., Dor., Nic., Pop., Ros., Rom., Vac.; Fam. CUSCUTACEAE: Cuscuta campestris Yuncker subsp. campestris - Sta. (on the Matricaria perforata L.).; C. europaea (Bab) Beger - Cos. (on the Lotus corniculatus L.) - Cot. (on the Daucus carota L.); Fam. DIPSACACEAE: Dipsacus fullonum L. (D. sylvestris Hudson) - Nic., Rom.; D. laciniatus L. - Cos., Vac.; Fam. EUPHORBIACEAE: Euphorbia cyparissias L. - Cos., DM., Nic.; E. lucida Waldst.şi Kit. - DM.; Fam. FABACEAE: Galega officinalis L. - Cos., DM., Nic., Rom., Vac.; Lathyrus palustris L. - Ros., Vac.; L. pratensis L. - Bra., Cot., Vac.; Lotus glaber Miller (L. tenuis Waldst. şi Kit) - Cos., Cot., Rom.; Medicago lupulina L. - Cos., Cot., DM., Rom., Vac.; Ononis arvensis L. subsp. arvensis (O. hircina Jacq.) - Cot.; Trifolium campestre Schreber. - Cos., Cot., Ros.; T. fragiferum L. subsp. fragiferum - Cos., Cot., Nic., Rom.; T. hybridum L. subsp hybridum - Cos., Cot., Nic., Rom.; T. medium L. subsp. medium - Bra., Cot., Vac.; T. pratense L. - Cos., Cot., Nic., Ros., Rom., Vac.; Bra., Cos., Cot., DM., Rom., Sau., Vac.; Fam. GERANIACEAE: Geranium palustre L. - Cos., Cot., Rom., Vac.; G. pratense L. - Bra., Cot.; G. robertianum L. - Vac.; Fam. HALORAGACEAE: Myriophyllum spicatum L. - Cos., Cot., Nic., Rom., Vac.; M. verticillatum L. - Cos., Cot., Rom., Sta., Vac.; Fam. HYPERICACEAE: Hypericum perforatum L. - Cos., Dor., Vac.; Fam. LAMIACEAE: Ajuga reptans L. - Cos., Cot., Nic., Rom., Vac.; Ballota nigra L. subsp. nigra - Cos., Dim., Dor., Nic., Rom., Vac.; Galeopsis speciosa Miller - Vac.; Glechoma hederacea L. - Cos., Cot., Vac.; Lamium maculatum L. subsp. maculatum - Cos., Cot., DM., Vac.; Leonorus cardiaca L. subsp. cardiaca - Bra., Cos., Cot., DM., Rom., Vac.; Lycopus europaeus L. - Cos., Cot., Nic., Ros., Rom., Vac.; Lycopus exaltatus L. fill. - Cos., Cot.; Mentha aquatica L. - Cos., Cot., DM., Ros., Rom., Vac.; M. arvensis L. subsp. arvensis - Cos., Cot., Rom., Vac.; M. longifolia (L.) Hudson - Cos., Vac.; M. pulegium L. - Cos.; Origanum vulgare L. - Vac.; Prunella vulgaris L. - Cos., Cot., Ros., Vac.; Scutellaria galericulata L. - DM., Vac.; Stachys annua (L.) L. - Cos., Nic., Rom., Vac.; S. palustris L. - Cos., DM., Nic., Vac.; Fam. LENTIBULARIACEAE: Utricularia vulgaris L. - Cot.; Fam. LYTHRACEAE: Lythrum salicaria L. - Cos., Cot., Nic., Rom.; L. virgatum L. - Cos., Cot., Rom., Vac.; Fam. MALVACEAE: Althaea officinalis L. subsp. officinalis - Cos., Cot., DM., Nic., Ros., Rom., Vac.; Malva neglecta Wallr. - Cos., Rom.; M. pusilla Sm. - Dor., Nic., Rom.; Fam. ONAGRACEAE: Chamerion angustifolium (L). Holub (Epilobium angustifolium L.) - Dor.; E. hirsutum L. - Cos.; E. palustre L. - Vac.; E. parviflorum Schreber - Cos., Nic.; E. roseum Schreber - Cos., Nic.; Fam. OXALIDACEAE: Oxalis stricta L. (O. europaea Jordan, O. fontana Bunge) - Cos., Cot.; Fam. PLANTAGINACEAE: Plantago altissima L. - Ros., Sta.; P. lanceolata L. - Cos., Cot., Dor., Ros., Rom., Sau., Vac.; P. major L. subsp. major - Cos., Cot., Dor., Ros., Rom., Vac.; Fam. PLUMBAGINACEAE: Limonium gmelinii (Willd) O. Kuntze (Statice gmelinii Willd.) - Cos., Rom., Ros., Vac.; Fam. POLYGONACEAE: Polygonum amphibium L. - Cos., Cot., Ros., Rom., Vac.; P. aviculare L. - Cos., Cot., Nic., Ros., Rom., Vac.; P. convolvulus (L.) Dumort. (Bilderdykia dumetorum L.) - Cos., Cot., Nic., Rom.; P. hydropiper L. - Cos., Vac.; P. lapathifolium L. subsp. lapathifolium - Cos., Nic., Rom.; P. minus Hudson. - DM.; P. mite Schrank. - Cos., Ros., Rom.; P. persicaria L. - Cos., Cot., Ros., Rom.; Rumex acetosa L. - DM.; R. conglomeratus Murray. - Cos., Cot., DM., Rom., Vac.; R. crispus L. - Cos., Cot., Ros., Rom., Vac., Vic.; R. hidrolapathum Hudson. - Cot., Nic., Ros., Rom.; R. maritimus L. - Cos.; R. obtusifolius L. - Cos.; R. palustris Sm. - Ros.; R. sanguineus L. - Cos., Nic.; R. stenophyllus Ledeb. - Cos., Ros.; Fam. PRIMULACEAE: Lysimachia nummularia L. - Cos., 75

4 Cot., Rom., Vac.; L. vulgaris L. - DM., Vac.; Fam. RANUNCULACEAE: Caltha palustris L. - Cot., Vac.; Ranunculus acris L. - Cos., Cot., Nic., Rom.; R. auricomus L. - Ros.; R. sardous Crantz - Bra., Cos., Cot.; R. sceleratus L. - Bra., Cot.; R. trichophyllus Chaix (Batrachium trichophyllus (Chaix) Bosch) - Cos., Cot., Ros., Rom.; Thalictrum lucidum L. - Vac.; Fam ROSACEAE: Potentilla anserina L. - Ros., Rom.; P. reptans L. - Cos., Cot.; P. supina L. - Cos., Cot., Vac.; Rubus caesius L. - Cos., Cot., DM., Dor., Nic., Sau., Sta., Rom., Ros., Vac.; Fam RUBIACEAE: Galium aparine L. - Cos., Cot., Rom., Vac.; G. palustre L. subsp. palustre - Cos., Cot.; G. rivale (Sibth. & Sm.) Griseb. (Asperula rivalis Sibth. & Sm.) - Cos.; G. uliginosum L. - Cos.; Fam. SALICACEAE: Populus alba L. - Cos., Cot.; Salix alba L. - Cos., DM., Vac.; S. aurita L. (S. caprea L. var. aurita Hudson) - Cot.; S. cinerea L. - Cot., Rom.; S. fragilis L. - Cos.; Fam. SCROPHULARIACEAE: Gratiola officinalis L. - DM.; Scrophularia nodosa L. - Bra., Vac.; Veronica anagallis-aquatica L. - Cos., Cot., Vac.; V. anagalloides Guss. - Cos., Cot., Vac.; V. becabunga L. - Cos., Nic., Ros.; V. chamedris L. subsp. chamedris - Cos., Cot., Nic., Rom.; V. longifolia L. subsp. longifolia - Vac.; V. scardica Griseb. - Rom.; Fam. SOLANACEAE: Datura stramonium L. - Cos., Dor., Nic., Rom., Ros.; Solanum dulcamara L. - Cos., Nic., Rom., Ros., Vac.; S. nigrum L. subsp. nigrum - Cos., Nic., Rom., Vac.; Fam. URTICACEAE: Urtica dioica L. - Cos., Cot., Dim., Dor., DM., Nic., Ros., Rom., Sta., Vac.; Fam. VALERIANACEAE: Valeriana officinalis L. - Nic.; Fam. VERBENACEAE: Verbena officinalis L. - Cos., Ros., Vac.; CLASA LILIATAE - Fam. ALISMATACEAE: Alisma gramineum Lej. - Rom.; A. lanceolatum With. - Cos., Cot., Rom.; A. plantago-aquatica L. - Bra., Cos., Cot., DM., Nic., Vac.; Fam. BUTOMACEAE: Butomus umbellatus L. - Cos., Cot., Nic., Rom.; Fam. CYPERACEAE: Bolboschoenus maritimus (L.) Palla. subsp. maritimus (Scirpus maritimus L.) Cos., Cot., DM., Nic., Rom., Vac.; Carex acutiformis Ehrb. - Cos.; C. distans L. - Cos., Rom., Vac.; C. flava L. - Cos.; C. hirta L. - Cos., DM., Vac.; C. ovalis Good. (C. leporina auct. non L.) - Vac.; C. pairae F. W. Schultz. - DM.; C. pseudocyperus L. - Cos.; C. riparia Curt. - Cos., Cot., Rom., Sta., Vac.; C. rostrata Stokes, - Cos., Cot.; C. vulpina L. - Cos., Cot., DM., Rom., Ros., Vac.; Cyperus fuscus L. - Cos., Nic., Rom.; Eleocharis palustris (L.) Roemer et Schultes - Cos., Cot., Rom.; Schoenoplectus lacustris (L.) Palla. (Scirpus lacustris L.) - Cos., Cot., Nic., Rom., Vac.; S. tabernaemontani (C. C. Gmelin) Palla (Scirpus tabernaemontani C. C. Gmelin ) - Cos., Cot.; Fam. HYDROCHARITACEAE: Hydrocharis morsus-ranae L. - Cos., Nic.; Fam. IRIDACEAE: Iris pseudacorus L. - Cos.; Fam. JUNCACEAE: Juncus articulatus L. - Cos., Cot., Ros.; J. compressus Jacq. - Rom., Vac.; J. conglomeratus L. - DM., Vac.; J. effusus L. - Cot., Rom., Vac.; J. gerardi Loisel. - Cos., Cot., Nic., Ros., Rom.; J. inflexus L. - Cos., Cot., Nic., Ros., Rom.; Fam. ORCHIDACEAE: Orchis laxiflora Lam. subsp. elegans (Heuffel) Soó - Cot.; Fam. POTAMOGETONACEAE: Potamogeton crispus L. - Cos., Cot., Rom., Sta., Vac.; P. lucens L. - Cos.; P. natans L. - Cos., Cot.; P. pectinatus L. - Cos., Cot., Ros., Rom., Vac.; P. trichoides Cham. et Schlecht. - Rom.; Fam. POACEAE: Agrostis capillaris L. subsp. capillaris (A. tenuis Sibth.) - Cos., Cot., Rom., Vac.; A. stolonifera L. subsp. stolonifera - Cos., Nic., Rom.; Alopecurus aequalis Sobol. - Rom.; A. arudinaceus Potret - Cos.; A. geniculatus L. - Cos.; A. pratensis L. subsp. pratensis - Cot.; Beckmannia eruciformis (L.) Host - Vac.; Calamagrostis epigeios (L.), Roth - Cos., Cot., DM., Vac.; Catabrosa aquatica L. - Cos., Ros., Rom.; Echinocloa crus-galli (L.) Beauv - Cos., Dim., Dor., Ros., Rom, Vac.; Elymus repens (L.) Gould (Agropyron repens (L.) Beauv.) - Cos., Cot., DM., Dor., Nic., Ros., Rom., Sau., Vac., Vic.; Glyceria maxima (Hartm) Holmberg - Cot., Ros., Vac.; Leersia oryzoides (L.) Swartz - Rom.; Phalaris arundinacea L. (Typhoides arundinacea (L.) Moench) - Cot., DM.; Phleum pratense L. - Cos., Cot.; Phragmites australis (Cav) Steudel - Bra., Cos., Cot., Dim., DM., Ros., Rom., Vac.; Poa annua L. - Cos., Cot.; P. trivialis L. - Cos., Ros.; Puccinellia distans (L.) Parl. - Cos., Cot., Ros., Vac.; P. limosa (Schur) Holmberg (P. distans (L.) Parl. subsp. limosa (Schur) Jav.) - Cos., Ros.; Setaria pumila (Poiret) Schultes (S. glauca auct. non (L.) Beauv.) - Cos., Cot., Ros., Rom., Vac.; Fam. SPARGANIACEAE: Sparganium erectum L. subsp. neglectum (Beeby) K. Richter - Cos., Cot., DM., Nic., Rom., Vac.; Fam. TYPHACEAE: Typha angustifolia L. - Cos., Ros., Rom.; T. latifolia L. - Cos., Cot., DM., Nic., Ros., Rom., Vac.; Fam. LEMNACEAE: Lemna minor L. - Cos., Cot., Nic., Ros., Rom., Vac.; L. trisulca L. - Cos., Cot., Nic.; Spirodela polyrhiza (L.) Schleichen - Ros. 76

5 The above list contains a number of 265 species of angiospermous, dicotyledonous and monocotyledonous. These species belong to 50 families and 136 genera. The dominant families on the Morişca Valley are these: Asteraceae; Chenopodiaceae; Fabaceae; Lamiaceae; Polygonaceae; Cyperaceae; Juncaceae; Poaceae. Life forms. Concerning the life forms, the most numerous species are hemicryptophytes (H %), the next being the helohydatophytes (HH 8. 48%), a normal situation for a meadow where perennial and biennial herbaceous plants prevail. There is a certain number of annual therophytes plants (Th %) and biannual plants (TH 2. 47%), the next being the geophytes (G 11. 3%). Also, the phanerophytes (Ph 2. 47%) and the chamaephytes (Ch 1. 06%) are in small number (Fig. 1). Phytogeographical elements. Concerning the phytogeographical elements (Fig. 2), the most numerous species are, normally, eurasian (Eua %). Also, a high percentage was recorded for circumpolar and cosmopolitan elements (Circ %; Cosm %). Then follow elements: european (Eur %), adventive (Adv 2. 8%), pontic-mediterranean (Pont. medit %), eurasian-mediterranean (Eua. medit. - 0,7%), submediterranean (Submedit %), balcanic-panonic (Balc. pan. 0. 7%), continentall (Cont. - 0,35%). Regarding the preferences of the species for temperature (T) (Fig. 3), the best represented are the mesothermophytic (T %), followed by the amphytolerant species (T %) and the subthermophytic species (T4 9. 6%), microthermophytic species (T %) and criophylle species with T %. Thermophytic categories not are represented. This distribution is largely dependent on the altitude and latitude of the different phytocoenoses, but also on the exposure of the field, all these being decisive factors in the thermic final assessment specific to every station, one of the main elements when it comes to the spreading of the vegetal species. With regard to the preferences of the species for soil humidity (U) (Fig. 4), best represented are the mesophytes (U %), which prefer humid soils, followed by the mesohydrophytes species (U %), hydrophytes species (U %), ultrahydrophytes species (U %), mesoxerophytes (U %) and amphytolerant species with U %. Regarding the tolerance of the species to the soil reaction (R) (Fig. 5), the amphitolerant species hold the majority (R %), followed by the species which prefer acidophil - neutral soils (R %) and acidophil soils with R %. And the species from the category which marks the transition to the basic soils (R %). There are also 6 extreme-acidophil species (R %). Figure 1. Life forms spectrum Figure 2. Phytogeographical elements spectrum 77

6 Figure 3. Ecological spectrum depending on the temperature Figure 4. Ecological spectrum depending on the soil humidity Figure 5. Ecological spectrum depending on the soil reaction Conclusions - The most numerous species are hemicryptophytes; - Concerning the phytogeographical elements the most numerous species are, normally, eurasian; - Regarding the preferences of the species for temperature (T) the best represented are the mesothermophytic; - With regard to the preferences of the species for soil humidity (U) best represented are the mesophytes; - Regarding the tolerance of the species to the soil reaction (R) the amphitolerant species hold the majority. Acknowledgement This paper was realised with the support of Phd. Ion Sîrbu and Phd. Nicolae Ştefan at Al. I. Cuza University of Iaşi, Faculty of Biology. 78

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