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.

The plant is densely cespitose, and, similarly" to the other diploid species, rather gracile, generally 25—35 cm high, but exceptionally also 55 cm (F. BERNIS' specimen from Santa Colomba). Its rhizomes are short, the leaf-sheaths covering the culm-base are hardly 1 cm long, entire. Naturally, also the leaf-sheaths are longer in exceptionally large plants, but there are not many even in the Madrid collection. They have probably grown on disturbed substrates, or derive from forest communities. The vetust basal sheaths are mostly shiny, glabrous, or rather glabrescent, densely vetust due to the appressed hairs of the vetust vaginae below them. The vetust vaginae never become filamentous. The baldes are grey, rigid, pruinose, plane or convolute. The innovational senile leaves are generally 3—4 cm long, sometimes 10 cm long (in the robust specimen mentioned above), 1.5—2 mm wide, plane, vetust also above, marginally scarious and scabriusculous, apically blunt. The leafshcaths are srtongly auriculate. The auricles have erect, 1,2 mm long cilia, decurrent in dense rows to the margins of the blades. The juvenile leavas are usually convolute, as long as the senile blades, densely and evely vetust due to minute haiis, when convolute 0,6, when deplanate 0.!) mm wide, similarly auriculate and elongately ciliate. The ligulae are 0.3 mm long, carinate marginally minutely ciliolate. The fully developed culm is foliate to about its half or two-third length. These leaves are 2—4 cm long, flat or conduplicate, with 6—10 cm long sheaths. The ligulae are similar to the innovational ones. The culm is generally 25 cm long there are also 40 cm long ones). The length depends upon the grade of development and habitat conditions. It is gracile, at most 0.5 mm thick on its upper part. The panicle is compact, cylindrical, usually not longer than 4—5 cm (8 cm in the Santa Colomba specimen), and 7—8 mm thick; lobate in the robust specimens mentioned above. The spikelets are stout, deltoid, strongly obtuse apically; due to elongation, the entire spikelet becomes more gracile and pointed. The lemmae are pilose (the hairs are minute and erect), or scabriusculous, the glumae rather scabriusculous only, their carina also with very minute, scabrous hairs only. Koeleria rodriguezii UJH. is indubitably the oldest, diploid member of the Series. The area of the plant includes North and Central Iberia: S\VSpain, and Portugal (together with var. setacea UJH.), the Sierra de Estrella, and in Central Spain the Sierra de Oata, the Sierra de Grados and the Iberian Range. Koeleria rodriguezii UJH. var. setacea UJH. var. nova Plantae dense caespitosae, graciles, altitudine usque 40 cm, vaginis vetustis, 0,6 mm longis. Folia senilia usque 3 cm longa, et 1,1 mm lata, sparse ciliata, folia juvenilia usque 3,5 cm longa, et 0,5 mm crassa, convoluta, subglabra, glauca, in regioné auricularum dense ciliata, caeterum sparse ciliata. Gaules 0,5 mm crassi, glabri. Paniculae usque 6 cm longae, et 0,6 cm crassae, cylindricae, vel subverticillatae. Spiculae parvae, deltoideae, 2,5—3,2 mm longae, (glabrae, vel minutissime hirsutae (Tab. I. Fig. 2). Floret Junto. Habitat in Lusitania. Holotypus adest in Herbario M unci Botanici Universitatis Zlirickensis. Locus classicus: 1820. Koeleria caudata (LK.) STEUD. Entre Gouveia e Manteigas: S. Cosme. L,eg. M. FERREIRA. Junho de 1905. (Flora Lusitanica Exsiccata Herb. Hort. Bot. Coinibricensis). In the costal as well as the intercostal zones on the abaxial side of the innovational leaves, the cells of the basic tissue have straight (not sinuous) walls, the silica-