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agar, substance obtained from seaweed

(Encyclopedia)agar äˈgär, āˈ–, ăgˈär [key], product obtained from several species of red algae, or seaweed, chiefly from the Ceylon, or Jaffna, moss (Gracilaria lichenoides) and species of Gelidium, harve...

Triceratops

(Encyclopedia)Triceratops trīsĕrˈətŏps [key] [Gr., = three-horn face], genus of ornithischian quadruped dinosaurs of the late Cretaceous period. Because of some variations in sample fossils, it was thought...

brodiea

(Encyclopedia)brodiea or brodiaea both: brədēˈə [key], any plant of the genus Brodiaea, herbs of the family Liliaceae (lily family), with narrow leaves and blue or purple star-shaped flowers. The many North Ame...

ragweed

(Encyclopedia)ragweed, any plant of the genus Ambrosia, coarse, weedy herbs belonging to the family Asteraceae (aster family), most of which are native to America. They have inconspicuous greenish flowers and soft ...

Randall, John Ernest, Jr.

(Encyclopedia)Randall, John Ernest, Jr., 1924–2020, American ichthyologist, b. Los Angeles, Ph.D. Univ. of Hawaii, Manoa, 1955. A marine taxonomist, he named 30 new genera and hundreds of new species of fish. Par...

sea lily

(Encyclopedia)sea lily, stalked echinoderm of the class Crinoidea. Sea lilies are ancient, having reached their peak in the Middle Mississippian period; about 5,000 fossil species are known. About 80 modern species...

balsam, garden

(Encyclopedia)balsam, garden, common name for the species Impatiens balsamina, a member of the jewelweed family. ...

loblolly pine

(Encyclopedia)loblolly pine, common name for the pine species Pinus taeda, found in the SE United States. ...

running pine

(Encyclopedia)running pine, common name for the plant species Lycopodium clavatum, also called ground pine. See Lycopodiophyta. ...

alligator

(Encyclopedia)alligator, large aquatic reptile of the genus Alligator, in the same order as the crocodile. There are two species—a large type found in the S United States and a small type found in E China. Alliga...