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Crataegus monogyna; Common Hawthorn   

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Crataegus monogyna
Crataegus monogyna
Common Hawthorn
Photographer: Dr. Amadej Trnkoczy

ID: 0000 0000 0323 0004 (2023-03-01)

Copyright © 2023 Dr. Amadej Trnkoczy

  • date of photo  Apr 6, 2006
  • latitude 44.37153   longitude 14.77937     View on Google Maps.
  • location   Adriatic Sea, island, Olib, south of village Olib, west Zadar archipela (Dalmatia, Croatia)
  • family Rosaceae
  • notes   Slo.: enovratni glog - syn.: Mespilus monogyna (Jacq.) All., Oxyacantha monogyna (Jacq.) M. Roem., Crataegus oxyacantha subsp. monogyna (Jacq.) Syme, Mespilus oxyacantha subsp. monogyna (Jacq.) Čelak and several tens of other names. - 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. - 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 Linné 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 Nikolić (2004) and Milović (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. Martinči et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnična Založba Slovenije (2007), p 283. (2) T. Nikolić, 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: (accessed Feb.27.2023) (4) M. Milović, S. Kovačić, N. Jasprica & V. Stamenković, Contribution to the Study of Adriatic Island Flora: Vascular Plant Species Diversity in the Croatian Island of Olib, Nat. Croat., Vol. 25:1, 25–54 (2016), Zagreb. (5) T. Nikolić, Ed. from 2004 on, Flora Croatica Database (FCD), Department of Botany, Faculty of science, FER-ZPR, University of Zagreb; (accessed March 1. 2023) (6) R. Domac, Flora Hrvatske, Priručnik za Određivanje bilja, II. edition (2002), Školska knjiga, Zagreb, p 181.
  • camera   Nikon D70 /Nikkor Micro 105mm/f2.8
  • contributor's ID #  Bot_0116/2006_DSC0182
  • photo category: Plant - shrub

  • common names   Common Hawthorn (photographer)
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    Using this photo   The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2023 Dr. Amadej Trnkoczy. For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT] (Replace the [AT] with the @ symbol before sending an email.)


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