Ruud de Block:
Laserpitium latifolium - Grossglocknerhochalpenstrasse
Ruud de Block:
Laserpitium latifolium - Lofer
Ruud de Block:
Laserpitium latifolium - Lofer
Ruud de Block:
Ulca minor Madrid
Ruud de Block:
Ulca minor Madrid 0803
Ruud de Block:
Ulca minor Madrid -1
Ruud de Block:
Ulca minor Madrid -2
Ruud de Block:
Zelkova abelica - Jardi Botanic de Soller
Ruud de Block:
Zelkova carpinifolia - Kaukasische Zelkova of Zwepenboom - JB Madrid
Ruud de Block:
Zelkova serrata - BG Leiden
Ruud de Block:
Ulmus minor - Bonsai - BG Barcelona
Ruud de Block:
Ulmus minor Mill. - BG Madrid
Ruud de Block:
Ulmus minor Mill. - BG Madrid
Ruud de Block:
Ulmus × hollandica 'Groeneveld' - Belmonte Arboretum
Ruud de Block:
Ulmus × hollandica 'Groeneveld' - Belmonte Arboretum
Ruud de Block:
Zelkova serrata (Thunb.) Makino - BG Meise
Ruud de Block:
Zelkova schneideriana Hand.-Mazz. - BG Madrid 231111-1
Ruud de Block:
Zelkova schneideriana Hand.-Mazz. - BG Madrid 231111-2
Ruud de Block:
Zelkova serrata (Thunb.) Makino - BG Madrid 231111-1
Ruud de Block:
Zelkova serrata (Thunb.) Makino - BG Madrid 231111-2