Crataegus cf chrysocarpa Storrs, Connecticut 900515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus cf flabellata 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus cf flabellata 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus cf flabellata 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus cf flabellata 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus chrysocarpa 1 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus chrysocarpa 2 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus chrysocarpa 3 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 1 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 10 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 11 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 12 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 13 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 14 (cult) Lund Sk 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 16 (cult) Lund Sk 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 17 (cult) Lund Sk 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 2 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 3 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 4 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 5 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 6 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 7 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 8 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 9 (cult) Lund Sk 120604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus laevigata 1 Sjaustre, Östergarn, Gotland 070605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus laevigata 2 Sjaustre, Östergarn, Gotland 070605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus laevigata 3 W of Gösslunda, Hulterstad, Öland 170902 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus laevigata 4 W of Gösslunda, Hulterstad, Öland 170902 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus laevigata 5 W of Gösslunda, Hulterstad, Öland 170902 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 1 Lund Sk 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 10 El Granizo, La Campana Nat. Park, Chile 171106 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 11 El Granizo, La Campana Nat. Park, Chile 171106 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 2 Lund Sk 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 3 Lund Sk 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 4 Lund Sk 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 5 Auckland Botanical Garden 151103 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 6 Auckland Botanical Garden 151103 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 7 Black head, Clare, Ireland 170529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 8 Black head, Clare, Ireland 170529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus monogyna 9 El Granizo, La Campana Nat. Park, Chile 171106 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus orientalis 1 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus orientalis 2 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus orientalis 3 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus orientalis 4 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 10 Lund Sk 130530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 11 Lund Sk 130530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 12 Lund Sk 130530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 13 Lund Sk 130919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 14 Lund Sk 130919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 15 Lund Sk 130919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 16 Kämpinge, Räng, Skåne 930530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 3 Lund Sk 080523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 5 Lund Sk 130530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 6 Lund Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 7 Lund Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 9 Lund Sk 080523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus tanacetifolia 1 Lund Bot Garden 100701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus tanacetifolia 2 Lund Bot Garden 100701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus tanacetifolia 3 Lund Bot Garden 100701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 15 (cult) Lund Sk 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus germanica 18 (cult) Lund Sk 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 1 Lund Sk 080523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 2 Lund Sk 080523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 4 Lund Sk 080523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crataegus rhipidophylla 8 Stammershalle, Bornholm 120602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).