Hans Hillewaert:
Blackstonia perfoliata
Hans Hillewaert:
Blackstonia perfoliata (flowers)
Hans Hillewaert:
Centaurium erythraea (flowers)
Hans Hillewaert:
Centaurium erythraea (plant)
Hans Hillewaert:
Centaurium pulchellum
Hans Hillewaert:
Cicendia filiformis
Hans Hillewaert:
Cicendia filiformis
Hans Hillewaert:
Gentiana bavarica (habitus)
Hans Hillewaert:
Gentiana brachyphylla
Hans Hillewaert:
Gentiana cruciata
Hans Hillewaert:
Gentiana nivalis
Hans Hillewaert:
Gentiana nivalis
Hans Hillewaert:
Gentiana purpurea
Hans Hillewaert:
Gentiana schleicheri
Hans Hillewaert:
Gentiana schleicheri
Hans Hillewaert:
Gentiana schleicheri (habitus)
Hans Hillewaert:
Gentianella campestris
Hans Hillewaert:
Gentianella germanica