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white snakeroot
(Encyclopedia)white snakeroot, North American woods perennial (Eupatorium urticifolium) of the family Asteraceae (aster family), having a flat-topped cluster of small white flowers. It is of the same genus as the b...Blakeslee, Albert Francis
(Encyclopedia)Blakeslee, Albert Francis, 1874–1954, American botanist, b. Genesee, New York. He received his Ph.D. at Harvard (1904) and was a member of the faculty until 1907. After several years as professor at...sandbur
(Encyclopedia)sandbur or bur grass, any species of the genus Cenchrus of the family Poaceae (grass family), sandy-soil plants of tropical and temperate regions. At maturity the sharp spines and burlike seeds make t...agronomy
(Encyclopedia)agronomy əgrŏnˈəmē [key], branch of agriculture dealing with various physical and biological factors—including soil management, tillage, crop rotation, breeding, weed control, and climate—rel...wheat grass
(Encyclopedia)wheat grass, any plant of the genus Agropyron, cool-season perennials of the family Poaceae (grass family). Species of wheat grass, both native and introduced, are important range forage grasses in th...trefoil
(Encyclopedia)trefoil trēˈfoil [key] [O.Fr.,=three-leaf], in botany, name for several plants, chiefly of the pulse family, having trifoliate leaves. Best known of the trefoils is clover. The bird's-foot trefoil (...tigernut
(Encyclopedia)tigernut, nearly cosmopolitan perennial (Cyperus esculentum) of the family Cyperaceae (sedge family) of the same genus as the papyrus plant. The tigernut has been cultivated since early times (chiefly...hawkweed
(Encyclopedia)hawkweed, any species of the genus Hieracium of the family Asteraceae (aster family), widely distributed perennials, chiefly of open fields. The small, dandelionlike flower heads are borne in clusters...kudzu
(Encyclopedia)kudzu ko͝odˈzo͞o [key], plant of the family Leguminosae (pulse family), native to Japan. Kudzu (Pueraria thunbergiana) has a woody stem, broad leaves, and clusters of large purple flowers. It is us...teasel
(Encyclopedia)teasel, common name for some members of the Dipsacaceae, a family of chiefly Old World herbs found mostly in the Mediterranean and Balkan areas but ranging to India and to S Africa. Species of Dipsacu...Browse by Subject
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