Le Château du Landsberg, situé à Heiligenstein au pied du Mont Sainte-Odile, est connu de tous les naturalistes pour sa belle population d'Eranthis hiemalis.
Le Château du Landsberg, berceau d'Herrade du Landsberg, connue pour son ouvrage l'Hortus delicatosum, présente une magnifique oriel,
- Acer pseudoplatanus L. - BAENITZ C.G. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/5/1876 - STR-13515.
- Acinos arvensis (Lam.) Dandy - BOLLENBACH - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Ruine. - 13/7/1944.
- Asarum europaeum L. - LOYSON E. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/11/1905 - STR-4277.
- Cardamine hirsuta L. - ENGEL R. - [France, Alsace, 67-Heiligenstein] - Château du Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 29/3/1953 - STR-9770.
- Cephalanthera longifolia (L.) Fritsch - BAENITZ C.G. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 23/5/1873 - STR-9273.
- Cephalanthera longifolia (L.) Fritsch - GRIESBACH - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - STR-9311.
- Cephalanthera longifolia (L.) Fritsch - GRIESBACH - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - STR-9315.
- Circaea x intermedia Ehrh. - BAUMANN N. - [France, Alsace, 67-Heiligenstein] - Landsberg (château ) - X = 976367 - Y = 2392401 - STR-29427.
- Crataegus x macrocarpa Hegetschw. - WALTER E. - [France, Alsace, 67-Barr] - Sentier de l'Einung sous le Landsberg - Alt. 500 m - Chênes, châtaigniers, sur granit. - 20/8/1930 - STR-7627.
- Cuscuta epithymum (L.) L. - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - 7/1954 - Herbier(s) : Herbier Charles Goepper.
- Dactylorhiza maculata (L.) Soo - GRIESBACH - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - STR-9467.
- Digitalis purpurea L. subsp. purpurea - GRIESBACH - [France, Alsace, 67-Heiligenstein] - Landsberg - 1828 - STR-54098.
- Eranthis hyemalis (L.) Salisb. - BAENITZ C.G. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 5/4/1874 - STR-3236.
- Eranthis hyemalis (L.) Salisb. - CLAUDON A. - [France, Alsace, 67-Heiligenstein] - Château du Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/.
- Eranthis hyemalis (L.) Salisb. - ENGEL R. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 8/4/1947 - STR-9386.
- Eranthis hyemalis (L.) Salisb. - HAUSSER E.J. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 28/2/1882 - STR-4590.
- Eranthis hyemalis (L.) Salisb. - HAUSSER E.J. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 16/8/1884 - STR-4591.
- Eranthis hyemalis (L.) Salisb. - HAUSSER E.J. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 28/2/1882 - STR-4592.
- Eranthis hyemalis (L.) Salisb. - IN HERBARIO STR - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - STR-3244.
- Eranthis hyemalis (L.) Salisb. - IN HERBARIO STR - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/2/1824 - STR-3245.
- Eranthis hyemalis (L.) Salisb. - IN HERBARIO STR - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - STR-3250.
- Eranthis hyemalis (L.) Salisb. - LOYSON E. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 30/3/1931 - STR-3237.
- Eranthis hyemalis (L.) Salisb. - LOYSON E. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/3/1911 - STR-3238.
- Eranthis hyemalis (L.) Salisb. - MÜCKE M. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 11/3/1906 - STR-3243.
- Eranthis hyemalis (L.) Salisb. - STIEFELHAGEN H. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 22/3/1907 - STR-3253.
- Eranthis hyemalis (L.) Salisb. - STIEFELHAGEN H. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 22/3/1907 - STR-3254.
- Eranthis hyemalis (L.) Salisb. - WALTER E. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 28/2/1891 - STR-3252.
- Helianthemum grandiflorum (Scop.) DC. subsp. grandiflorum - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - clairières. - 7/1954 - Herbier(s) : Herbier Charles Goepper.
- Hepatica nobilis Schreber - KIRSCHLEGER F. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - STR-8920.
- Hepatica nobilis Schreber - MÜCKE M. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 7/4/1906 - STR-3866.
- Hepatica nobilis Schreber - MÜCKE M. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 11/3/1906 - STR-3867.
- Hepatica nobilis Schreber - STIEFELHAGEN H. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 22/3/1907 - STR-3869.
- Hypericum hirsutum L. - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Forêt du Landsberg - forêt. - 7/1954 - Herbier(s) : Herbier Charles Goepper.
- Jasione montana L. - KIRCHNER A.J. - [France, Alsace, 67-Heiligenstein] - Barr (Alsace), Rochers du Landsberg - X = 976241 - Y = 2392292 - Alt. 580 m - Rochers. - 15/9/1909 - Herbier(s) : Herbier A. Kirchner.
- Lathyrus linifolius (Reichard) Bässler - BAENITZ C.G. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/6/1876 - STR-22239.
- Lycopodium clavatum L. - TISCHMACHER J.P. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - 3/7/1958 - Herbier(s) : Tischmacher J.P.
- Mercurialis perennis L. - ENGEL R. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 13/4/1956 - STR-10912.
- Odontites vernus (Bellardi) Dumort. - KIRCHNER A.J. - [France, Alsace, 67-Heiligenstein] - Barr (Landsberg) - X = 976241 - Y = 2392292 - Alt. 580 m - Rochers. - 9/1909 - Herbier(s) : Herbier A. Kirchner.
- Prunella laciniata (L.) L. - BAENITZ C.G. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 7/8/1876 - STR-26221.
- Pulmonaria obscura Dumort. - BAENITZ C.G. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 1/5/1875 - STR-19166.
- Pulmonaria vosagiaca - KRAUSE E.H.L. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 8/4/1906 - STR-19251.
- Sedum acre L. - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - ruines. - 1956 - Herbier(s) : Herbier Charles Goepper.
- Sedum rupestre L. - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - 7/1951 - Herbier(s) : Herbier Charles Goepper.
- Sedum telephium L. subsp. fabaria Kirschleger - JARDIN BOTANIQUE DE STRASBOURG - [France, Alsace, 67-Heiligenstein] - Alsace, Bas-Rhin, Landsberg - X = 976367 - Y = 2392401 - STR-200700719.
- Silene flos-jovis (L.) Greuter & Burdet - KIRCHNER A.J. - [France, Alsace, 67-Heiligenstein] - Château de Landsberg, Barr. - X = 976241 - Y = 2392292 - Alt. 580 m - Rochers granit.. - 15/9/1909 - Herbier(s) : Herbier A. Kirchner.
- Sorbus mougeotii Soyer-Willemet & Godron - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976355 - Y = 2392466 - 1912 - STR-59294.
- Sorbus mougeotii Soyer-Willemet & Godron - ISSLER E. - [France, Alsace, 67-Heiligenstein] - Landsberg (ruines), Unterhalt - X = 976355 - Y = 2392466 - Alt. 500 m - 1897 - STR-59303.
- Sorbus mougeotii Soyer-Willemet & Godron - WALTER E. - [France, Alsace, 67-Heiligenstein] - Château Landsberg - X = 976355 - Y = 2392466 - Alt. 580 m - Bois, rocailles, mur. - 25/5/1898 - Herbier(s) : Herbarium alsaticum - STR-59287.
- Vicia tetrasperma (L.) Schreber - GOEPPER C. - [France, Alsace, 67-Barr] - Kiosque Landsberg - X = 976654 - Y = 2392062 - 7/1954 - Herbier(s) : Herbier Charles Goepper.
- Viola hirta L. - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Forêt du Landsberg - 4/1952 - Herbier(s) : Herbier Charles Goepper.
- Viola odorata L. - ENGEL R. - [France, Alsace, 67-Heiligenstein] - Landsberg - X = 976367 - Y = 2392401 - Alt. 570 m - 13/4/1955 - STR-9882.
- Viola reichenbachiana Jordan ex Boreau - GOEPPER C. - [France, Alsace, 67-Heiligenstein] - Forêt du Landsberg - 4/1952 - Herbier(s) : Herbier Charles Goepper.