planthedge bedstraw
bot. namegalium mollugo
partroots
extractionheat
water
alum
sulfuric acid
water
alum
sulfuric acid
col. groupanthraquinones
colorantalizarin
hydroxyan-
thraquinone
lucidin
pseudopurpurine
purpurin
rubiadin
hydroxyan-
thraquinone
lucidin
pseudopurpurine
purpurin
rubiadin
sourcech–8002
print
sample
sample
plant month
plant month
5
6
7
8
crop month
crop month
2
3
4