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Turnera ulmifolia grows erect, with dark toothed leaves and small, yellow-orange flowers, and is often found as a weed growing on roadsides. These yellow flowers bloom around 6:00 a.m. and wilt around 11:30 a.m. Life span for flower is around six hours. These plants can survive on minimum water and grow on walls, cement blocks, and rocks.
Trifolium campestre, commonly known as hop trefoil, [1] field clover [2] and low hop clover, is a species of flowering plant native to Europe and western Asia, growing in dry, sandy grassland habitats, fields, woodland margins, roadsides, wastelands and cultivated land. The species name campestre means "of the fields".
Linum flavum, the golden flax or yellow flax, is a species of flowering plant in the family Linaceae, native to central and southern Europe. It is an erect, woody perennial growing to 30 cm (12 in) tall by 20 cm (8 in) broad, with dark green, semi- evergreen leaves, and terminal clusters of bright yellow, five-petalled flowers in spring. [ 2 ]
Sida fallax, known as yellow ilima [1] or golden mallow, [2] is a species of herbaceous flowering plant in the Hibiscus family, Malvaceae, indigenous to the Hawaiian Archipelago and other Pacific Islands. Plants may be erect or prostrate and are found in drier areas in sandy soils, often near the ocean.
Flowers appear April to May at the end of each stem in a group, or umbel, of 2 to 6, occasionally only 1. The flowers are 5–13 mm (0.2–0.5 in) long, with 3 yellow petals and 3 yellow sepals spreading outwards. The flowers will open in the morning but typically wilt in the hot afternoon sun.
The inflorescence is a raceme made up of yellow flowers having four petals with spreading sepals. [3] [4] The fruit is a silique 3–5 cm long with a beak 1–2 cm long that is flattened-quadrangular. The valves of the silique are glabrous or rarely bristly, three to five nerved. The seeds are dark red or brown, [2] smooth 1-1.5 mm in diameter.
Cota tinctoria is grown in gardens for its bright attractive flowers and fine lacy foliage; there is a white-flowering form. Under the synonym Anthemis tinctoria, the cultivar 'E.C. Buxton' has gained the Royal Horticultural Society's Award of Garden Merit. [7] The popular seed-raised cultivar 'Kelwayi' has 5 cm wide, yellow flowers on 65 cm ...
Gagea lutea is a bulb-forming herbaceous perennial with lanceolate leaves and green-tinged yellow flowers with 6 tepals. [ 4 ] [ 5 ] [ 6 ] It is a predominantly lowland species that inhabits moist, base-rich, shady habitats including; broad-leaf woodlands, hedgerows, limestone pavements, pastures, and riverbanks. [ 7 ]