Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 101. (Budapest 2009)
Somlyay, L.: Occurrence of Chamaesyce glyptosperma, and a survey of the genus Chamaesyce (Euphorbiaceae) in Hungary
24 L. Somlyay In Hungary four species, namely Euphorbia chamaesyce LINNAEUS, 1753, E. humifusa WLLLDENOW, 1814, E. maculata LINNAEUS, 1753 and E. nutans LAGASCA, 1816 have been reported so far (SOÓ 1966, 1980, PRISZTER 1985). According to BALOGH et al. (2004) E. ( Chamaesyce ) maculata and E. ( Chamaesyce ) nutans can be considered as naturalized plants in Hungary, while the other two taxa are casual aliens. In July of 2008 a Chamaesyce species unknown for the author was found in the locality named "Belső-major-dülö" located in the district XXIII of Budapest. On account of the new discovery it is worth revising all former Hungarian records of the genus Chamaesyce. MATERIALS AND METHODS To clarify the distribution of Chamaesyce species in Hungary, the following herbaria were checked: Hungarian Natural History Museum, Budapest [BP], Eötvös Loránd University, Budapest [BPU], University of Pécs [JPU], University of Debrecen [DE], Corvinus University, Budapest [CORV] and Szent István University, Gödöllő [SZIE], In the case of the latter two institutions I have created provisional herbarium acronyms, since they are missing in HOLMGREN & HOLMGREN (1998). For identification, keys given by HÜGIN & HÜGIN (1997) and HÜGIN (1998) were used. With the exception of C. maculata , which is relatively (though far from equally) wide-spread in Hungary all herbarium specimens are enumerated separated by semicolons. Relevant part of the label's text, collector, date of collecting (s.d. = without date) and, if needed, data of revision are included. In the case of C. maculata only specimens of local historical significance are mentioned. All former relevant Hungarian literature were checked and evaluated based on voucher specimens. Terminology of "invasion ecology" follows PYSEK et al. (2004). RESULTS AND DISCUSSION Chamaesyceglyptosperma (ENGELMANN) SMALL, 1903 in Hungary Herbarium specimens - "In agris Csiribpuszta, inter Agárd, et Zichyújfalu, comit. Fehér", PRISZTER, 16.V1I.1957 (sub Euphorbia humifusa WILLD., rev.: SOMLYAY, 2008) [BP]; "Budapest : XXIII. ker., Soroksár, Belső-major-dülö (Gyál határában), ruderális helyen SOMLYAY, 11.VII.2008 [BP]. Remarks - The species collected by the author in July of 2008 was identified as C. glyptosperma (syn.: Euphorbia glyptosperma ENGELMANN, 1859) Annls hist.-nat. Mus. natn. hung. 101, 2009
