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Ross, Sir James Clark

(Encyclopedia)Ross, Sir James Clark, 1800–1862, British polar explorer and rear admiral. In 1818 he accompanied his uncle, Sir John Ross, in search of the Northwest Passage and commanded the Erebus. He later stud...

Mutis, José Celestino

(Encyclopedia)Mutis, José Celestino hōsāˈ thālĕstēˈnō mo͞oˈtēs [key], 1732–1808, Spanish naturalist and plant explorer. One of Linnaeus' first disciples in Spain, he went to South America and settled ...

Bentham, George

(Encyclopedia)Bentham, George bĕnˈthəm [key], 1800–1884, one of the greatest of English systematic botanists; nephew of Jeremy Bentham. He wrote Handbook of British Flora (1858) and, with W. J. Hooker, Genera ...

diapensia

(Encyclopedia)diapensia dīəpĕnˈsēə [key], common name for the Diapensiaceae, a family of low evergreen shrubs native to cool and arctic regions of the Northern Hemisphere. The species that are restricted to t...

Bruce, William Speirs

(Encyclopedia)Bruce, William Speirs spĭrz [key], 1867–1921, Scottish explorer and authority on the polar regions. He first went to the Antarctic as ship's surgeon in 1892 and later did survey work in Franz Josef...

timberline

(Encyclopedia)timberline, elevation above which trees cannot grow. Its location is influenced by the various factors that determine temperature, including latitude, prevailing wind directions, and exposure to sunli...

lemming

(Encyclopedia)lemming, name for several species of mouselike rodents related to the voles. All live in arctic or northern regions, inhabiting tundra or open meadows. They frequently nest in underground burrows, par...

Britton, Nathaniel Lord

(Encyclopedia)Britton, Nathaniel Lord, 1859–1934, American botanist, grad. Columbia School of Mines, 1879. He taught geology and botany at Columbia, 1879–96. He was the New York Botanical Garden's first directo...

caribou, in zoology

(Encyclopedia)caribou, name in North America for the genus (Rangifer) of deer from which the Old World reindeer was originally domesticated. Caribou are found in arctic and subarctic regions. They are the only deer...

larch

(Encyclopedia)larch, any tree of the genus Larix, conifers of the family Pinaceae (pine family), which are unusual in that they are not evergreen. The various species are widely distributed in the Northern Hemisphe...