A botanist's colour guide.
These 17 colour charts are used to determine and record the colour of plant tissues.
This information is important to scientists working with growth rates, nutrient deficiencies, plant diseases, and other plant processes.
Contains 320 matte colour chips which are pemanently mounted on charts of 17 hues
(2.5R, 5R, 10R, 2.5YR, 5YR, 7.5YR, 2.5Y, 5Y, 2.5GY, 5GY, 7.5GY, 2.5G, 7.5G, 5BG, 2.5B and 5RP) in a loose leaf binder.