Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 65. (Budapest 1973)

Ujhelyi, J.: Data to the systematics of the sections Bulbosae and Caespitosae of the genus Koeleria, XI.

sheet contains merely a few and short senile leaves. These are, however, invariably hirsute. Whereas on the juvenile blades the pih hardly develop in the intercostal zone, they always appear on the senile blades. (Koeleria schinzii [DOM.] UJH. also has well developed pih). Affected by culture environment, the pili develop more densely on Koeleria Wilczekiana DOM. However, this phenomenon holds for every Koeleria thriving in experimental conditions, equally for Balkanian, Carpathian, or Alpine species. The microphotographs of the juvenile and senile leaf epiderms of Koeleria Wilczekiana DOM. (Plate II, Fig. 1-2) evince their identity with Koeleria hirsuta (LAM. & DC) GAUD. (ÚJHELYI 1962). The structure characterizing DOMIN'S "Koeleria pyramidata (Lam.) Dom.", (a high ploidy member of the Series Ciliatae UJH., or of the Series Molles UJH.), or "Koeleria gracilis PERS." (Koeleria eristata [L.) PERS. em. BORB.), or Koeleria majoriflora (BORB.) BORB., is absent in it. In their epiderms (ÚJHELYI 1962), the costal zone is always strongly developed, the silica bodies are more densely arranged, <ind the micro-hairs and pili have considerably wider bases. On the other hand, and as characteristic of the Series Hirsutae UJH., the minute micro-hairs are evenly and densely distributed in the intercostal zone, and in the senile leaves there appear sporadically the thin pih, with a narrower base than in Koeleria cristata (L.) PERS. em. BORB. The weakly developed cells of the costal zone are thin-walled, There can be no doubt therefore that Koeleria Wilczekiana DOM. is no a hyb­rid, but identical with Koeleria hirsuta (LAM. & DC.) GAUD. (Plate I, Fig. 1). It w r as connected with this problem that I felt it necessary to submit a more detailed characterization of Koeleria schinzii (DOM). UJH. In 1962, I had not avail­able DOMIN'S original specimen, merely a plant from BOROS'S herbarium, an ex­emplar collected by PAUL on the Chaste, Oberengadin. To supersede the short diag­nosis presented at the time, I can give now a detailed description based on the holotype of Koeleria hirsuta GAUD. var. Schinzii DOM. The short diagnosis from 1962 is not enough to prove the specificity of the plant. I can understand the authors of the latest Swiss flora, and the need of further studies for a final proof (HESS, LANDOLT & HIRZEL 1967). Plantae robustae, laxe caespitosae, innovationibus intravaginalibus, rhizomatibus 3 cm longis, et 3 mm crassis. Altitudine usque 35 cm. Vaginae robustae, usque 4 cm longae, integrae, rufescentes. Folia senilia usque G cm longa, et 2 mm lata, plana, glaucescentia, valde hirsuta, parce auriculata, vaginis usque 4 cm longis, dense pu­berulis. Ligulae 0.2 mm longae, abruptae, minute ciliolatae. Folia juvenilia 12 cm longa, el 1.5 mm lata, plana, glaucescentia, glabriuscula, vaginis 3.5 mm longis, auriculatis, minutissime dense hirstttis in fame longe ciliatis. Ligulae 0.2 mm longae, abbreviatae, valde crenatae, minute ciliolatae. Cidmi plantarum evolutarum ad dimi­din m partem foliosa, foliis cidmeis laminis magis evolutis instructis, laminae foliorum culmeorum usque 7.5 cm longae, et 2 mm latae, acutae, minutissime hirsutae, vel glab­rescentes, ad marginem scabriusculae, auriculatae. Caules usque 30 cm longi, et 1 mm crassi, glabri, infra paniculam dense hirsuti. Paniculae usque 5 cm longae, et 2 cm crassae, ovaiae, in parte inferiori valde lobatae, laxiorae, tote dense hirsutae. Spiculae 9 mm longae, et 3 mm latae, 4-5-florae, superficie dense hirsutae. Glumae inequales. inferiores 6 mm, lanceolatae, acutae, superiores 7.5 mm longae, ovatae, aristatae. lemmae 7 mm longae, aristis 2 mm longis, longe hirsutae, paleae 5 mm longae, bi­carinatae, acutae, hyalinae. Antherae 3 mm longae. Habitat in pratis alpinis Vallesiae.

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