Yellow-weed
Yellow-weed is a common name for several plants and may refer to: *'' Ranunculus bulbosus'', native to western Europe *''Reseda luteola'', native to Europe and western Asia *''Solidago canadensis ''Solidago canadensis'', known as Canada goldenrod or Canadian goldenrod, is an herbaceous perennial plant of the family Asteraceae. It is native to northeastern and north-central North America and often forms colonies of upright growing plants, ...

Ranunculus Bulbosus
''Ranunculus bulbosus'', commonly known as bulbous buttercup or St. Anthony's turnip, is a perennial flowering plant in the buttercup family Ranunculaceae. It has bright yellow flowers, and deeply divided, three-lobed long-petioled basal leaves. Description The stems are 20–40 cm tall, erect, branching, and slightly hairy, with a swollen corm-like base.RH Uva, JC Neal and JM Ditomaso (1997) ''Weeds of The Northeast'', Cornell University Press, Ithaca, NY. pp. 294-295 There are alternate and sessile leaves on the stem. The flower forms at the apex of the stems, with 5–7 petals, the sepals strongly reflexed. The flowers are glossy yellow and 1.5–3 cm wide. The plant blooms from April to July. Distribution The native range of ''Ranunculus bulbosus'' is Western Europe between about 60°N and the Northern Mediterranean coast. It grows in both the eastern and western parts of North America as an introduced weed. Bulbous buttercup grows in lawns, pastures and field ...
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Reseda Luteola
''Reseda luteola'' is a plant species in the genus '' Reseda''. Common names include dyer's rocket, dyer's weed, weld, woold, and yellow weed. A native of Europe and Western Asia, the plant can be found in North America as an introduced species and common weed. While other resedas were used for the purpose, this species was the most widely used source of the natural dye known as weld. The plant is rich in luteolin, a flavonoid which produces a bright yellow dye. The yellow could be mixed with the blue from woad (''Isatis tinctoria'') to produce greens such as Lincoln green. History and usage The dye was in use by the first millennium BC, and perhaps earlier than either woad or madder. Until the discovery of quercitron it was the most used yellow dye but by the end of the 19th century had ceased to be in wide use due to the discovery of the synthetic aniline dyes which were cheaper to produce. Historically, France exported large quantities of weld. It prefers waste places. ...
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