A Debreceni Déri Múzeum Évkönyve 1989-1990 (Debrecen, 1992)

Természettudomány - László Papp–Miklós Dudás: Data on Botanical Values of Central and South Nyírség and their Vicinity

!,!!! Debrecen (Nagycsere, Csere Forest, „Botanical Garden".) Fr.p.-U. Sporadically, 5060 + 10 specimens. At the margin of the forest, on heavily polluted area as well. Spring rain shortage could be solved by water of the canal. Martinka (Erős-lyuk, Vermesoldal) S.cin. Some specimens (By verbal information of. I. Sándor). (!), !!! Haláp (Halápi Forest) (Soó, 1932) Fr.p.-U. Sporadically (35-40 specimens). Most of them are forced under the trees on the two latter habitats, thus no enough mechanical tissue can be produced, the plants tumble over and do not flower! Enough light could be ensured to initiate flowering of other important species as well by cautious thinning (by cutting some trees, especially Populus nigra). Margin individuals have extincted! (!), !!! Bulbocodium vernum L. ssp. versicolor NY, Sáránd (Sárándi Forest, between Mikepércs and Sáránd) (Soó, 1932) Conv.-Q. Heavily declined population fragments! Can be hardly found! Fancsika-Bánk (Bánki Forest), strictly protected area, Rob., Conv.-Q. (originally all of them were Conv.-Q.), Transplanted from other forests of Bánk (58 + 3) (Conv.-Q.), from the Hosszúpályi Forest (Törökmetélő), (42 + 200 + 59-1-31), Rob., so altogether 850-900 specimens with the original population. The area is protected by law, but active individual protection is necessary every year! The second largest population in NY. Cautious replacement of robinia trees and manual reconstruction of the original associations would be important! Hosszúpályi (Hosszúpályi Forest, around Törökmetélő, Földvár-side) Rob., Conv.-Q. (originally the Rob. was Conv.-Q.) 50-60 + 3035 specimens. !, !!! Hajdúbagos (Sűrűtisztása: Pogácsás) Rob. (originally Conv.-Q.) 27 specimens. (They were found on the basis of information of I. Lánszki.) (!),!!! Haláp (Halápi Forest, around Álló Hill) (Soó, 1932) This population (subpopulation) has not been found yet unfortunately, but it is known that gardens around the school of Haláp contain specimens coming from here, some ten specimens (information of M. Endes). Stock found by I. Máthé probably exists only as a remain! (!) Újléta. Rob., (Conv.-Q.), Fest.-Q. This wonderful population was found by Mrs. Nagy (see Soó, 1980.) According to our recent knowledge this is the largest population of the country containing about 4000-4100 specimens, very variable genetically, several 1. leucochlamydeum Soó and 1. roseolum Priszter specimens occur here as well. By estimation made on 05.03., 1989 individual number of the population is over 5000 and there is 1 young, immature specimens per 150-200 mature ones. Very few vegetative bulbil increase can be found. Thus if every capsular fruit contains 30 seeds as an average-wich vipen in the middle of June haveevery 4500-6000 seed would become a plant. Increase of the population was probably caused by certain lack of disturbance, ideal habitat and mild winters. Very cautious reconstruction of the habitat helped manually by botanists can be made. It also would be important because of several other valuable species occurring here, e.g. Lilium martagon! !, !!! Bánk-Pipóhegy, Rob. (originally Conv.-Q., Fest.-Q.) Conv.-Q., in consociation with Populus alba. Altogether 176-180 specimens with transplanted ones from Hosszúpályi (Törökmetélő 20) and nearby robinia woods as well as Conv.-Q. (97). About 25-30 specimens in nearby robinia woods. !,!!! Bánk (around Monostorpályi, after Csíkgát) Conv.-Q. 27 +10 transplanted specimens from Bánk. Whole population of Nyirseg contains 6200-6400 specimens. As a matter of curiosity it can be mentioned that last population of South Great Plain on the Kelebia Meadow was checked last spring. That remain was estimated to contain 800-1000 specimens. It occurs together with other valuable geophytons such as Crocus reticulatus, Muscari botryoides in a very degraded Rob. originally Festuco-Quercetum roboris danubiale Soó populetosum albae subassociation (or as it named recently Festuco-Populo-Quercetum) up to now association of its habitat here has not been published). It is worth to mention that according to my investiga18