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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...

plantain

(Encyclopedia)plantain plănˈtĭn [key], any plant of the genus Plantago, chiefly annual or perennial weeds of wide distribution. Many species are lawn pests and the pollen is often a hay fever irritant. P. psylli...

lawn

(Encyclopedia)lawn, grass turf or greensward cultivated in private yard or public park. A good lawn, or green, has both beauty and usefulness; its maintenance for golf, tennis, baseball, and other sports is a costl...

bagworm

(Encyclopedia)bagworm, common name for the larva of small moths of the family Psychidae. The larva spins a silken cocoon as it travels, hence the term bagworm. When fully grown, the bagworm fastens its covering to ...

carpet beetle

(Encyclopedia)carpet beetle, name for several beetles that are highly destructive to carpets and upholstery and are classified in the same family as the larder beetles. Adult beetles of this family are pollen eater...

ombú

(Encyclopedia)ombú ōmbo͞oˈ [key], large evergreen tree (Phytolacca dioica) of the pampas of Argentina and Uruguay. It has an umbrellalike spread of foliage; the trunk may attain a girth of 40 to 50 ft (12.2–1...

aquaculture

(Encyclopedia)aquaculture, the raising and harvesting of fresh- and saltwater plants and animals. The most economically important form of aquaculture is fish farming, an industry that accounts for an ever increasin...

entomology

(Encyclopedia)entomology, study of insects, an arthropod class that comprises about 900,000 known species, representing about three fourths of all the classified animal species. Insects are studied because of their...

treehopper

(Encyclopedia)treehopper, any member of three families of winged insects, remarkable for the curious shapes of most species. The shapes are due to the enlargement of the dorsal (upper) covering of the first thoraci...

turnip

(Encyclopedia)turnip, garden vegetable of the same genus of the family Cruciferae (or Brassicaceae; mustard family) as the cabbage; native to Europe, where it has been long cultivated. The two principal kinds are t...

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