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tare

(Encyclopedia)tare târ [key], name sometimes used as a synonym for any vetch, most frequently for the common vetch. The tare of the Scriptures, a weed of grainfields and considered a seed of evil, is thought to ha...

auxin

(Encyclopedia)auxin ôkˈsĭn [key], plant hormone that regulates the amount, type, and direction of plant growth. Auxins include both naturally occurring substances and related synthetic compounds that have simila...

Bermuda grass

(Encyclopedia)Bermuda grass, perennial pasture, lawn, and hay grass (Cynodon dactylon) of the family Poaceae (grass family), native to Africa and Asia and now common in warm regions of both hemispheres. It is the s...

coltsfoot

(Encyclopedia)coltsfoot, Eurasian perennial herb (Tussilago farfara) of the family Asteraceae (aster family), now a widespread weed in most northern lands. The scaly flower stalk bears a yellow flower head and down...

shepherd's-purse

(Encyclopedia)shepherd's-purse, annual herb (Capsella bursa-pastoris) of the family Cruciferae (or Brassicaceae; mustard family), indigenous to Europe but now a nearly cosmopolitan weed in temperate regions. It is ...

quack grass

(Encyclopedia)quack grass or couch grass, Old World perennial grass (Agropyron repens), now widely distributed and in the United States a troublesome weed. It somewhat resembles a beardless wheat and has creeping, ...

cornflower

(Encyclopedia)cornflower, common herb (Centaurea cyanus) of the family Asteraceae (aster family). It is a garden flower in the United States but a weed in the grainfields of Europe. It is called bluebottle or bluet...

parsnip, in botany

(Encyclopedia)parsnip, garden plant (Pastinaca sativa) of the family Umbelliferae (parsley family), native to the Old World. It has been cultivated since Roman times for its long, fleshy, edible root. Wine and beer...

bracken

(Encyclopedia)bracken or brake, common name for a tall fern (Pteridium aquilinum) with large triangular fronds, widespread throughout the world, often as a weed. It is considered poisonous to livestock when eaten i...

mignonette

(Encyclopedia)mignonette mĭnˌyənĕtˈ [key], common name for some members of the Resedaceae, a small family of herbs and a few shrubs inhabiting arid regions. The main genus, the mignonettes (genus Reseda), chie...

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