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sepal

(Encyclopedia)sepal, a modified leaf, part of the outermost of the four groups of flower parts. The sepals of a flower are collectively called the calyx and act as a protective covering of the inner flower parts in...

Thompson, Daniel Pierce

(Encyclopedia)Thompson, Daniel Pierce, 1795–1868, American novelist, b. Charlestown, Mass. He wrote adventure novels, many of which deal with life in Vermont. His notable work is The Green Mountain Boys (1839). ...

Douglas, George

(Encyclopedia)Douglas, George, pseud. of George Douglas Brown, 1869–1902, English novelist, b. Scotland. His reputation rests on his single novel, The House with the Green Shutters (1901), a somber story of Scott...

Maathai, Wangari Muta

(Encyclopedia)Maathai, Wangari Muta wän-gäˈrē mātīˈ [key], 1940–2011, Kenyan environmental...

jasper ware

(Encyclopedia)jasper ware, kind of Wedgwood pottery in green, blue, lilac, and other colors, with characteristic Greek reliefs and designs. ...

color

(Encyclopedia)color, effect produced on the eye and its associated nerves by light waves of different wavelength or frequency. Light transmitted from an object to the eye stimulates the different color cones of the...

emerald

(Encyclopedia)emerald, the green variety of beryl, of which aquamarine is the blue variety. Chemically, it is a beryllium-aluminum silicate whose color is due to small quantities of chromium compounds. The emerald ...

leaf insect

(Encyclopedia)leaf insect, common name given to herbivorous insects of leaflike appearance forming a single family in the order Phasmida. Leaf insects are green and have extremely flattened, irregularly shaped bodi...

Shimomura, Osamu

(Encyclopedia)Shimomura, Osamu, 1928–2018, Japanese organic chemist and marine biologist, Ph.D. Nagoya Univ., 1960. Shimomura was a researcher at Princeton (1960–82) and a professor (1982–2001) simultaneously...

Potter's Bar

(Encyclopedia)Potter's Bar, town (1991 pop. 22,755), Hertfordshire, central England, in the Midlands. Potter's Bar is a residential district, most of which is within the Green Belt Zone barred to industrial develop...