Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 96. (Budapest 2004)

Kováts, D.: Some differences in morphological structure of the vegetative parts (herbage) of Sesleria heufleriana Schur and Sesleria hungarica Ujhelyi (Poaceae)

In most of botanical literature Sesleria hungarica ÚJHELYI is considered to be a subspecies of Sesleria heufleriana (DEYL 1978, 1980, 1989, 1991, 1996, 2000, SOÓ 1980, PRISZTER 1985, SIMON 2000). Only in few instances Hungarian literature accepts Sesleria hungarica as a species (SOÓ 1973, SIMON 1992). In the floristic work of the Hungarian Bükk Mountains (VOJTKÓ 2001) and in protected plants of Hungary (LESS 1999), Sesleria hungarica is dealt with as an independent species. MATERIALS AND METHODS The research material of both Sesleria taxa amounting to 320 specimens, from 13 populations (Table 1) was collected at different times (see below), and in different places of the northeastern part of Hungary partly from original habitats, and partly from an experimental garden of identical conditions (100 specimens from 4 populations). They were side by side at a distance of about 40 cm from one another. The sampling for measurement in the case of samples from the original habitats were 220 specimens from 9 populations (Table 1) gathered in May, immediately after the blooming period, at the beginning of the fruiting stage (see below). The collection of samples from the experimental garden for measurement took place about a month earlier, in April, in the blooming period. In this latter case the lengths of culms and those of the internodes of specimens from the original habitats cannot be compared with the specimens from the experimental garden. As is known, the culms and the leaves of grasses further increase in length not only until the blooming period but also after that. The research material was collected from the following habitats. Sesleria heufleriana SCHUR, 1853 - Population 1: Comit. Cibin. In lapidosis montis "Verfu Magura" prope pagum Nagy Talmács. Solo arenoso saxoso, alt. c. 250 m.s.m. Loco classico! Leg. Dr. ÁRPÁD DE DEGEN 05.05. 1903. Gramina Hungarica exsiccata. Topotypus DEZSŐ KovÁTS, 09.2002. Population 2: In rupibus apud Szarvaskő, mt. Bükk. Legit: 05.05.1949. ANDRÁS HORÁNSZKY. Population 3: Material from the experimental garden originated from: 10-11. Comit. Heves, prope pagum Szarvaskő. In rupibus gabrosis, in monte "Várhegy", in "Bükki Nemzeti Park", alt. cca. 300 m.s.m. 06.06.1983. Leg. et det. TIBOR SZERDAHELYI. Taken out of the experimental garden: 16.04.1986. Population 4: Comit. Abauj-Torna. In rupibus calcar. sept, silvat. montis Szádvár prope Szögliget. Alt. cca. 450 m.s.m. 01.05.1953. Leg. ÁDÁM BOROS. Table 1. Sesleria research material from original habitat from experimental garden sum number of number of specimens populations number of number of specimens populations number of number of specimens populations S. heufleriana 110 4 30 1 140 5 S. hungarica 110 5 70 3 180 8 Sum 220 9 100 4 320 13