Botany

Botany - grow your knowledge with us.

Upgrade to Britannica Online

Take a tour, New improved britannica online

Imagine Britannica's 32-volume encyclopedia online right there for you, plus full access to articles. Amazing content, written by world experts, that you can cite for projects and assignments.

Click here for Britannica shop

gley

Sticky clay soil or soil layer formed under the surface of some waterlogged soils. Characteristic of poorly drained areas, gley soils contain reduced amounts of iron and other elements and are gray and mottled in colour.

Find more information on gley. Upgrade to Britannica Online for more on gley.

  • Get more

  • M?ss?ng more?

    Subscribers see 10 times more content. Just US $69.95 per year

  • Britannica, just as colourful as Hong Kong
  • Times may change, but insightful knowledge is still in demand. That's why Britannica brings a world of knowledge online, to Hong Kong. Have a look for yourself.