B. Papp szerk.: Studia Botanica Hungarica 38. 2007 (Budapest, 2007)
Pifkó, Dániel: Kitaibel's Cytisus taxa
Studia bot. hung. 38, pp. 11-32, 2007 KITAIBEL'S CYTISUS TAXA D. PIFKÓ Department of Botany, Hungarian Natural History Museum H1476Budapest, Pf. 222, Hungary;pifko@bot.nhmus.hu A revision of all data found under the genus name Cytisus in the 229 articles and travel notes, and 86 herbarium specimens of Pál Kitaibel (1757-1817), mostly from the Carpathian Basin, is given. The material discussed contains the species described by Kitaibel as well as several other taxa described later by him, but published in other works. A new combination Chamaecytisus triflorus subsp. falcatus (W. et K.) Pifkó is hereby proposed. Key words: Carpathian Basin, Chamaecytisus, combinatio nova, Laburnum, Lembotropis INTRODUCTION The Carpathian Basin hosts several complexes of the sensu lato genus Cytisus (sect. Lembotropis, sect. Corothamnus, sect. Spartopsis, sect. Tubocytisus etc.) of which the richest and taxonomically the most problematic group is sectio Tubocytisus (hereinafter genus Chamaecytisus). The genus Chamaecytisus, in general, contains species complexes with wide distributions that contain various endemic forms and species with more or less restricted ranges; with respect to our area of discussion (the Carpathian Basin and the Balkan) such complexes do include taxa with close relatives in the Balkan. Such taxa in the Carpathian Basin are: Ch. hirsutus agg. or Ch. supinus agg. ("Ch. aggregatus", "Ch. pannonicus"), Ch. triflorus agg. ("Ch. ciliatus", "Ch. leucotrichus" , "Ch. falcatus"); Ch. austriacus agg. (Ch. heuffelii, Ch. virescens). At the time of Kitaibel some of these taxa had not been described yet, so a number of specimens in his herbarium or diaries were identified by him with already described species; or in some instances he named them (published by him in WALDSTEIN and KITAIBEL 1805, 1812). Kitaibel's identifications in some cases were erroneous, e.g. sometimes the same species, or specimens from the same population were assigned by him with different names. For anyone working with Cytisus s. L, it was a problem that no integrated treatment of this difficult group was made until recently. For this reason, a complex revision of Cytisus, in context with all
