Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 73. (Budapest 1981)
Szujkó-Lacza, J.: Revision of three Astragalus taxa (Leguminosae) and their cenological relations
spann or in other word belong to the Th life-form (RAUNKIAER 1907) 18 species are present but among the perennial species the annual Arenaria serpillifolia, Br omit s mollis, B. ramosus, Cerastium semidecandrum, Erysimum diffusum, E. pannonicum, Minuartia verna ssp. pannonica, Poa bulbosa var. vivipara, Saxifraga tridactylites, Syrenia cana are always characteristic on the calcifilous sandy soil. Only the remained seven plants seem to be ruderale. The 2nd sample has fortythree species. The species composition shows here that of the perennials and annuals are growing here but they are tallgrasses species in a deeper deposition at the margin of "Varsány hegy". This sandy hill subsequently losses the hillic character and begins the narrow transitional zone to the wet marshy land beside the river Duna. The 3rd sample has the less species, only forty. Consequently the species have the largest •covering values in this sample: Artemisia campest ris 10%, Car ex liparicarpos 5%, Cynodon dactylon 15%, the two Festuca species 10-10%, Koeleria glauca 35%, Sedum acre 5%, and S. sexangulare 40% ! and the 50% of the surface is covered by the two Thymus species. In June the yellow and lilac colours of the Sedum and Thymus species are predominant in this sample plot. The following species are present in the three samples (Table 3): Astragalus onobrychis, Festuca rupicola var. sulcata, Galium verum, Eryngium campestre, Thymus praecox. In the 1st and 3rd samples occur together twenty-one species. The 1st and 2nd samples are similar by seven species, the 2nd and 3rd samples contain only four common species. Nine species had already been over the flowering at that time —phenophase 41, 42—or just had finished in the first flower or in the blossoming —phenophase 34—twenty species. Only seven species had been in the vegetative developmental phenophase (24). But the fortyeight species were in blossoming time. Festuca vallesiaca — Erysimum crepidifolium ass. The number of species/sample alter from 29-38 in Bohemia (Table 4). Only in Mont. Radobyl (sample 1, 2) grown at that time; Astragalus exscapus, A. e. var. caulifer, Car ex supina, Centaurea rhenana, Dianthus carthusianorum, Elytrigia intermedia, Eryngium campestre. Lithospermum arvense, Muscari tenuiflorum, Stachys recta, Stipa pennata (but it may occur in Mont. Oblik too, out of the sample). There are present only in Mont. Oblik: Adonis vernalis, Agrimonia eupatoria, Brachypodium pinnatum, Crategus monogyna, Fragaria viridis, Oxytropis pilosa, Pilosella cymosa, Taraxacum sp. The following species are common in the four samples in both investigated localities of the Bohemian Central Mountain: Achillea pannonica, Euphorbia cyparissias, Thymus cf. glabrescens and no more. In all the three samples are present: Astragalus exscapus, Erysium crepidifolium, Festuca valesiaca (in the sample 4th grow the F. rupicola), Koeleria gracilis, Sanguisorba minor, Teucrium chamaedrys, Verbascum lychnitis. The Mont. Radobyl and in the Bohemian Central Mountain the Oblik appears as an isolated basaltic cone. The bigger part of the Oblik is covered by a mixed forest. (In Mont. Radobyl the patches of forest is much smaller.) The 4th sample in Oblik was taken from near to the forest margin. But the 3rd sample has also shown the same calciphilous oak-forest steppe characters by the species Adonis vernalis, Brachypodium pinnatum, Carex humilis, the two Helictotrichon species, Oxytropis pilosa, Pilosella cymosa. Phenologically, thirty-nine species —more of them are shrubs —was only in the vegetative phenophases (22-24), three finished or standing near to the blossoming phases (phenophase 34), the Pulsatilla nigricans was in the seed ripening stage or over this, and the remaining forty-seven species were in the blossoming phenophases. Though the difference in days are only 26 between the recording time in the two localities in Hungary and Bohémien Central Mountain, much more species were only in the vegetative developmental phases in Czechoslovakia than in Hungary. Making a comparison between the samples of the Great Hungarian Plain (i.e. at Dunavarsány) and of the Bohemian Central Mountain, we can conclude: the former is more luxuriant in species than the latter.
