Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 58. (Budapest 1966)

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

except for the larger cells of Koeleria skorpilii (PODP.) UJH., and the hairs appearing only on the axial side. (Plate IV. Fig. 3.). The plant is robust, densely cespitose, its rhizome bulbosely incrassate, the rhizome ligneous. It is 30—42 cm high. The large, entire sheaths are adpressed and densely hirsute. The innovational leaves are rigid, about 4—7 cm long, 3 mm wide, plane or convolute, marginally cartilaginous, rigid, glaucous. The ligulae are only 0.2 mm long, truncate. The culm-blades are 2 cm long, plane, also glaucous. The culm is 38 cm long, 1 mm thick, glabrous. The panicle is wide, cylindrical, 5 cm long and 1.5 cm wide. The spikelets are 7.5—8 mm long, subglabrous. The lower glume is 5.5, the upper one 6.5 mm long, acute. The lemmae are 7 mm long, oval or lanceolate, subaristate or acuminate, the surfaces scabriusculous or finely pilose. This short description and the structure of the epiderm refer to a hexaploid Koeleria, definitely evincing its adaptation to the xerothermous habitat. In its external habit, together with Koeleria callieri (DOM.) UJH., Koeleria csatói UJH., and some other undescribed hexaploid taxa inhabiting the Mediterranean, it is truly highly similar to Koeleria splendens PRESL em. UJH. It was mainly the epidermal structure which revealed its state as a polyploid of Koeleria degeni DOM. The shape of the spikelets, at a careful examination of the glumae and lemmae, also speaks for this relationship. Further corroborative facts are the occurrence of the plant, close by the area of Koeleria degeni DOM., as well as the similarity of the habitat. The discovery of the diploid member of the Series is a task of the future. Summary As a continuation of the preceding six papers, the present treatise discusses some taxa of K. DOMIN'S Subsectio Splendentes. Showing the diploid, tetraploid, and hexaploid members of the Series Caudatae UJH., established in 1961, the taxa appearing in diverse places are now clarified. The diploid members of the Series Caudatae UJH. are: Koeleria rodriguezii ÚJHELYI species nova, and its variety: var. setacea UJH. var. nova^ Koeleria filifolia (DÓM.) ÚJHELYI species nova; the tetraploid member is Koeleria caudata (LINK) STEUDEL, and its varieties: var. bivestita (SCHUR) ÚJHELYI combinatio nova, var. Mr suta ÚJHELYI var. nova, and var. alger iensis DOMIN (discussed in 1961) ; the hexaploid member is Koeleria dasyphylla WILLK., and its variety: var. nevadensis (HACK.) ÚJHELYI combinatio nova. The area of the Series is the Iberian Peninsula and Algeria. The Series Degenii ÚJHELYI is a new series. The tetraploid member is Koeleria degeni DOM., the hexaploid one Koeleria skorpilii (PODP.) ÚJHELYI species nova, combinatio nova, This latter species was hitherto known as Koeleria splendens PRESL var. pseudorigidula DOMIN. References: 1. DOMIN, K. : Fragmente zu einer Monographie der Gattung Koeleria (Magy. Bot. Lap., 3, 1904, p. 254—281). — 2. DOMIN, K.: Monographie der Gattung Koeleria (Bibl. Bot., Stuttgart, Heft 65, 1907, pp. 354). — 3. PAUNERO, E.: Las Avenas espanolas. IV. (Anales del I. Botánico A. J. Cavanilles de Madrid, 17, 1959, p. 257—376). — 4. ÚJHELYI, J. : Újabb eljárás a szálaslevelű Egyszikűek, különösen a Gramineaecsalád epidermisz-szövettani vizsgálatához — Neues Verfahren zur epidermishistologischen Untersuchung der faserblättrigen Monocotyleclonen, insbesondere der GramineaeFamilie (Bot. Közl., 45, 1954, p. 227—230). — 5. ÚJHELYI, J.: Taxonomical Evolution of linear Loaves in the Family Gramineae (Acta Biologica, Suppl. 4, 1961, p. 17). — 6. ÚJHELYI, J. : Data to the Systematics of the subsectio Glaucae of Sectio Bulbosae of the Genus Koeleria (Ann. Hist.-nat. Mus. Nat. Hung., 53, 1961, p. 207—224). — 7. UJ-