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The paper presents morphological diversity within Rosa agrestis Savi, species identified among others in the buffer zone and the area of the Low Tatras National Park (Slovakia). This taxon belongs to the polymorphic section Caninae DC. em. Christ, and its morphological differentiation particularly relates to the degree of hairiness and glandularity of leaves and the presence or absence of glandules on pedicels. Based on these features four varieties of this species (R. agrestis var. agrestis, R. agrestis var. albiflora (Opiz.) Degen, R. agrestis var. gizellae (Borbás) R. Keller, and R. agrestis var. schulzei) were distinguished in Europe (Popek 1996). The occurrences of all these varieties were found in the analyzed area.

Gaetano Savi (1769–1844) worked at the University of Pisa and was a prominent figure among Italian botanists of the XIX century. He published about 75 scientific papers, primarily devoted to floristic researches and taxonomical investigations. During his career, he described 89 taxa of vascular plants (6 genera and 83 species). In the frame of a typification project devoted to the names described by Gaetano Savi (D’Antraccoli et al. 2015), we found that up to now only 8 names (ca. 9%) have been typified (Zohary & Heller 1984, Baldini & Jarvis 1991, Garbari & Cecchi 2000, Selvi & Cecchi 2009, O’Leary 2010, Amadei et al. 2013, 2015, Alonso et al. 2016). One of the names still lacking a typification is Rosa agrestis Savi (1798: 475), a species occurring in the most part of Europe, Russia, Anatolia and in the North-Western part of Africa (Silvestre & Montserrat 1998). Rosa agrestis belongs to R. sect. Caninae Candolle (1818: 3) emend. Christ (1873: 36), the most numerous and taxonomically complex section in Europe (Bruneau et al. 2007, De Cock et al. 2008). However, since its description, R. agrestis was recognized as a distinct species by most authors (e.g. Kláštersky 1968, Pignatti 1982, Lattanzi & Tilia 2002, Tison & de Foucault 2014).

Despite their genetic homogeneity, many taxonomic species are described as European dogroses (Rosa L. section Caninae (DC.) Ser.) with consistent morphological variability. Here we report a morphometric study of 27 hip and leaf characters of proximate dogrose populations that include Rosa agrestis, a member of the subsection Rubigineae, in Flanders. In principal components analysis one R. agrestis population in Kanne had intermediate morphology between R. canina and R. corymbifera, on the one hand, and three other R. agrestis populations, on the other, suggesting hybridogenic origin. Half-sib R. agrestis seedlings were grown under controlled conditions and their leaf characters were studied. A tendency toward deviating morphology in seedlings from the Kanne population, analogous to the mother plants in the field, and a correlation for specific leaf characters between mother plants and their corresponding seedlings reinforce a genetic basis for the observed divergence in the Kanne population. The assumed hybridogenic mother plants did not produce fewer seeds per hip than the others of the pure populations. In addition, for all sampled dogroses, which included six species, the diameter of the discus was correlated with the number of seeds per hip, whereas the diameter of the orifice was not correlated with this character. This implies that only the diameter of the orifice and not the diameter of the discus might be decisive for species identification among European dogroses.

Rosa agrestis Savi; Fougère-Danezan M. 202 – France; CDBI; KJ575104; KJ575419; KJ575212;, Published as part of Fougère-Danezan, Marie, Joly, Simon, Bruneau, Anne, Gao, Xin-Fen & Zhang, Li-Bing, 2014, Phylogeny and biogeography of wild roses with specific attention to polyploids, pp. 275-291 in Annals of Botany 115 (2) on page 292, DOI: 10.1093/aob/mcu245, http://zenodo.org/record/7888909

The paper presents morphological diversity within Rosa agrestis Savi, species identified among others in the buffer zone and the area of the Low Tatras National Park (Slovakia). This taxon belongs to the polymorphic section Caninae DC. em. Christ, and its morphological differentiation particularly relates to the degree of hairiness and glandularity of leaves and the presence or absence of glandules on pedicels. Based on these features four varieties of this species (R. agrestis var. agrestis, R. agrestis var. albiflora (Opiz.) Degen, R. agrestis var. gizellae (Borbás) R. Keller, and R. agrestis var. schulzei) were distinguished in Europe (Popek 1996). The occurrences of all these varieties were found in the analyzed area.

Rosa agrestisSAVI Salzburg: Tennengau, Golling, Eingang des Bluntautales, kleines südexponiertes Feldgehölz, ca. 490m, 8444/2, 04.09.2003, leg./det. OS, Herbarium OS/LI. Diese Rose wird in der Roten Liste von WITTMANN et al. (1996) als in Salzburg ausgestorben / verschollen geführt, seitdem wurde nur das Vorkommen nahe der Falkensteinwand am Wolfgangsee nachgewiesen (WITTMANN & PILSL 1997). Sonst liegen für dieses Bundesland zwei unbestätigte Angaben aus dem Pinzgau vor (vgl. LEEDER & REITER 1958)., Published as part of Stöhr, O., Pilsl, P., Essl, F., Hohla, M. & Schröck, C., 2007, Beiträge zur Flora von Österreich, II, pp. 155-292 in Linzer biologische Beiträge 39 (1) on page 242, DOI: 10.5281/zenodo.5407540, {"references":["WITTMANN H., PILSL P. & G. NOWOTNY (1996): Rote Liste gefahrdeter Farn- und Blutenpflanzen. - 5. Aufl., Naturschutz-Beitrage 8 / 96, Salzburg: 1 - 83."]}

41. R. agrestis Savi, FI. Pis. 1: 475 (1798) (R. sepium Thuill., non Lam.). Up to 2 m. Intemodes long; prickles curved, sometimes few or absent on the flowering shoots. Leaflets 5-7, 10-30(-50) x 12-25 mm, elliptical to oblong-obovate, acute, cuneate at base, biserrate to compound-serrate, glabrous or pubescent, always glandular, dull green; teeth glandular. Pedicels 10-20 mm, glabrous or sometimes sparsely stipitate-glandular. Sepals eglandular, glabrous, deflexed and deciduous after anthesis. Petals 10-20 mm, white. Disc wide, with a narrow orifice. Styles rather long, glabrous or slightly villous. Fruit 10-15 mm, subglobose, ovoid or ellipsoid, glabrous, red. Most of Europe, rare in the north and east. All except Az Cr Fa Fe Is No Rs (N, B, C, E) Sb., Published as part of I. Kl����tersk��, 1968, 10. Rosa L., pp. 35-42 in Flora Europaea, Volume 2, Rosaceae to Umbelliferae, Cambrdige :Cambridge University Press on page 31, DOI: 10.5281/zenodo.47067