Ruud de Block:
Pontederia cordata - Snoekkruid_1
Ruud de Block:
Pontederia cordata - Snoekkruid_2
Ruud de Block:
Pontederia cordata - Snoekkruid_3
Ruud de Block:
Pontederia cordata - Snoekkruid_4
Ruud de Block:
Eichhornia crassipes - Waterhyacinth
Ruud de Block:
Eichhornia crassipes - Waterhyacinth - BG Meise
Ruud de Block:
Eichhornia crassipes - Waterhyacinth - BG Delft-01
Ruud de Block:
Eichhornia crassipes (Mart.) Solms - BG Meise
Ruud de Block:
Eichhornia crassipes (Mart.) Solms- Kew Gardens
Ruud de Block:
Pontederia cordata L. - Snoekkruid - Hortus Lapidarius 230720