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Turnera ulmifolia, the ramgoat dashalong [1] or yellow alder, is a species of plant of family Passifloraceae, native to Mexico and the West Indies. A recent study found that yellow alder potentiated the antibiotic activity against methicillin-resistant Staphylococcus aureus ( MRSA ).
The bright green leaves are opposite, ovate, pointed and without teeth or hairs. The yellow flowers are about 8mm across, borne singly on long stalks in the axil of each leaf. They have five very narrow sepals, five pointed petals and five stamens. The ovary is superior, forming a capsule. [2]: 114 [3]
Hypericum perforatum, commonly known as St John's wort (sometimes perforate St John's wort or common St John's wort), is a flowering plant in the family Hypericaceae.It is a perennial plant that grows up to 1 metre (3 ft 3 in) tall, with many yellow flowers that have clearly visible black glands around their edges, long stamens (male reproductive organs), and three pistils (female reproductive ...
Lysimachia vulgaris, the yellow loosestrife or garden loosestrife, is a species of herbaceous perennial flowering plant in the family Primulaceae. It was transferred to Myrsinoideae based on results of molecular phylogenetic research [ 2 ] [ 3 ] before being merged into the Primulaceae.
Fritillaria pudica, the yellow fritillary, is a small perennial plant [2] found in the sagebrush country in the western United States (Idaho, Montana, Oregon, Washington, Wyoming, very northern California, Nevada, northwestern Colorado, North Dakota and Utah) and Canada (Alberta and British Columbia). [3] [4] It is a member of the lily family ...
Allamanda cathartica, commonly called golden trumpet, [2] common trumpetvine, [2] and yellow allamanda, [2] is a species of flowering plant in the family Apocynaceae. It is native to Brazil . This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius .
Leaves are opposite, round to oval, usually coarsely and irregularly toothed or lobed. The bright yellow flowers are born on a raceme, most often with five or more flowers. The calyx has five lobes that are much shorter than the flower. Each flower has bilateral symmetry and has two lips. The upper lip usually has two lobes; the lower, three.
It blooms from August to October [6] and produces pungent-smelling, golden-yellow flowers. The flower heads are 6–13 millimetres (1 ⁄ 4 – 1 ⁄ 2 in) long [4] and made up of 5 small, yellow, tubular disk flowers, and occur in umbrella-shaped terminal clusters. [7] [5] The shrub reproduces from seeds and root sprouts. [5]