Crataegus-monogyna_1

Description:

Crataegus monogyna Jacq, syn.: Mespilus monogyna (Jacq.) All., Oxyacantha monogyna (Jacq.) M. Roem., Crataegus oxyacantha subsp. monogyna (Jacq.) Syme, Mespilus oxyacantha subsp. monogyna (Jacq.) elak and several tens of other names.Family: RosaceaeEN: Common Hawthorn, Single-seeded Hawthorn; DE: Eingriffelige WeidornSlo.: enovratni glog Dat.: April 6. 2006Lat.: 44.37153 Long.: 14.77937Code: Bot_0113/2006_DSC0031Picture file names: from Crataegus-monogyna_raw_1 to Crataegus-monogyna_raw_4.Habitat: roadside bushes; flat, skeletal, calcareous ground; partly sunny and dry place; average precipitations ~ 1.000 mm/year, average temperature 12-14 deg C, elevations 30 m (100 feet), Sub-Mediterranean phytogeographical region. Substratum: soil.Place: Adriatic Sea, island, Olib, south of village Olib, west Zadar archipelago, Dalmatia, Croatia. Comments (pertain to pictures in Flicker album Crataegus monogyna): Genus Crataegus is taxonomically a difficult one. Plants are extremely variable in all their morphological traits. For example, even the habit of the species Crataegus monogyne, can vary from very low bush (see Fig. 20 24 taken on island Krk) to few meters high bush or even small tree (other Figs. taken on island Olib). In his time Carl von Linn recognized nine species in this genus. Three of them were later assigned to different genera. But around the beginning of 20th century the number of described species exploded. In America more than 1.000 and in Europe about 500 different taxa were published (Ref. 3). In his revision of genus Crataegus Christensen (1992) described about 60 taxa in the Old World. For a purpose of a better overview, all these taxa are organized in several sections and subsections, but different authors did this on different ways according to their understanding of the terms species, subspecies, variety and form. So, the situation is completely 'unmanageable' for an amateur botanist.Nevertheless, all plants shown here have flowers with a single stigma, so they must be somewhere close to Crataegus monogyna. Also both references Nikoli (2004) and Milovi (2016) state presence of this species and no others for islands Olib and Krk. This make me pretty sure the determination is correct.Ref.: (1) A. Martini et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnina Zaloba Slovenije (2007), p 283. (2) T. Nikoli, Flora Croatica, Vaskularna flora Republike Hrvatske, Vol. 3. Alfa d.d.. Zagreb (2020) p 488.(3) K.I. Christensen, Revision of Crataegus Sect. Crataegus and Nothosect. Crataeguineae (Rosaceae-Maloideae) in the Old World, Systematic Botany Monographs, Vol. 35, American Society of Plant Taxonomists (1992), pp 1-199; available at: bot.biologia.unipi.it/chiavi/Crataegus_Sect_Crataegus_chr... (accessed Feb.27.2023)(4) M. Milovi, S. Kovai, N. Jasprica & V. Stamenkovi, Contribution to the Study of Adriatic Island Flora: Vascular Plant Species Diversity in the Croatian Island of Olib, Nat. Croat., Vol. 25:1, 2554 (2016), Zagreb.(5) T. Nikoli, Ed. from 2004 on, Flora Croatica Database (FCD), Department of Botany, Faculty of science, FER-ZPR, University of Zagreb; hirc.botanic.hr/fcd/ (accessed March 1. 2023)(6) R. Domac, Flora Hrvatske, Prirunik za Odreivanje bilja, II. edition (2002), kolska knjiga, Zagreb, p 181.