Kitaibelia vol. 7 – no. 2. (2002) p.237-245.
A Lathyrus pallescens (Bieb) C. Koch Magyarországon, és más adatok a Budai-hegység flórájának ismeretéhez
Somlyay Lajos – Pifkó Dániel
All known localities of the sub-Mediterranean-Pannonian-Pontian element L. pallescens (Bieb.) C. Koch (Meusel et al. 1965) in Hungary are clarified. At present only two localities in the Buda Mts are confirmed, though there are old herbarium data from several other localities of the Buda Mts, from the Mátra Mts and the Bakony Mts as well. The latter record (near Várpalota, J. Sadler, 1817, BP) has been overlooked so far.
All records of L. pallescens (Bieb.) C. Koch from the region of Lake Balaton (Balatonfüred, Tapolca, Sümeg) seem to be uncertain as no herbarium material exists. The supposed localities at Balatonfüred and Tapolca mentioned in the recent literature come from the works of Neilreich (1866) and Borbás (1900). The first locality (Balatonfüred) is originally based on Sigmund’s compilation (1837, pp. 45–48.) of the data of earlier botanists. Nevertheless Sigmund (1837) might have used Sadler’s manuscript („Iter Fürediense”, 1817) in a broad sense, regarding all records and localities (e.g. L. pallescens: Várpalota) as belonging to Balatonfüred. The second locality (Tapolca) is originally based on Kitaibel’s Iter Baranyense (1799), but the record of „L. albus” Kitaibel had noted at Tapolca may refer to L. pannonicus (Jacq.) Garcke s. str. (see Gombocz 1945, p. 402.). The supposed locality at Sümeg mentioned first in Jávorka (1924–1925) might have been based on a single sheet (LVIII. No 128) of the Kitaibel Herbarium. Nevertheless the text of its label („angustifolius? E Cottu Sümegh. Ich bitte um Samen od. Pflanzen.” – see Jávorka 1934, p. 180.) and a concerning sentence („A. Festetits schickte an den Botanischen Garten dieselbe Orobus aus den Wäldern der Somogy”) of Sadler’s manuscript (1817) refer to an unknown locality in Somogy county (Cottus Sümeghiensis), not to Sümeg town.
Recent records (Máthé – Kovács 1962, Kovács 1976, 1985) of L. pallescens (Bieb.) C. Koch from Mt Sár (Mátra Mts, N Hungary) seem also be false as these articles do not mention the occurrence of the morphologically similar L. lacteus (Bieb.) Wissjul. that grows sporadically on the mountain. Furthermore L. pallescens was collected here only once by Z. Zsák in 1928 (BP).
Further literature records (Simon 1992, 2000) of the species from the region of Kisalföld (NW Hungary) are obviously false. In this case even the original source of the record is unknown.
At the two known localities in the Buda Mts L. pallescens prefers forest-steppe habitats dominated and characterized by tall grasses [Arrhenatherum elatius (L.) P. B. ex J. et C. Presl, Elymus hispidus (Opiz) Melderis, Helictotrichon pubescens (Huds.) Pilg., Poa pratensis L.] and Fabaceae species such as Coronilla varia L., Dorycnium germanicum (Gremli) Rikli, Lotus corniculatus L., Medicago falcata L., Onobrychis arenaria (Kit.) Ser., Trifolium alpestre L., T. montanum L., T. rubens L., Vicia tenuifolia Roth. Further species that characterize this association are: Achillea pannonica Scheele, Campanula bononiensis L., Dictamnus albus L., Erysimum odoratum Ehrh., Euphorbia glareosa Pall., Filipendula vulgaris Mönch, Fragaria viridis Duch., Galium glaucum L., G. verum L., Geranium sanguineum L., Inula hirta L., Linaria angustissima (Lois) Borb., Linum austriacum L., Rosa spinosissima L., Serratula radiata (W. et K.) M. B., Silene bupleuroides L., Teucrium chamaedrys L., Thalictrum minus L. and Vinca herbacea W. et K.
All Hungarian herbarium and literature (Csapody 1993, Tímár – Szmorad 1996, Lájer 1998) records of L. pannonicus (Jacq.) Garcke [s. str., that is excluding L. lacteus (Bieb.) Wissjul.] are localized to wetland habitats of the western part of the country (Kisalföld–Bakonyalja region and Tapolca Basin). This species seems to prefer lowland with only a few collin localities influenced by subatlantic climate on the western slopes of the Bakony Mts.
Based on morphological characters and on coenological, arealgeographical considerations L. lacteus (Bieb.) Wissjul. is worthy of specific rank. This species inhabits only dry forest-steppe habitats of the collin region of Hungary (see Fekete – Jakucs 1957, Bässler 1981). A former record of this taxon (Hódmezővásárhely, S Hungary) that refers to lowland („Eupannonicum”) locality is dubious. Further known localities at the border of the Eupannonicum belong rather to other floristic regions.
New or recently confirmed localities of about 40 species in the Buda Mts are also presented.