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Common names include toothache plant, Szechuan buttons, [2] paracress, jambu, [3] buzz buttons, [4] tingflowers and electric daisy. [5] Its native distribution is unclear, but it is likely derived from a Brazilian Acmella species. [6] A small, erect plant, it grows quickly and bears gold and red inflorescences. It is frost-sensitive but ...
Cordia lutea, known as yellow cordia or in Spanish muyuyo, [2] is a shrubby plant in the borage family (Boraginaceae), native to the Galápagos Islands, mainland Ecuador, Peru, and the Marquesas Islands in Polynesia. Common in the arid lowlands of the Galápagos, its relatively large yellow flowers make it easy to identify.
Found on an exposed headland in nature, it grows as a low mat-like perennial shrub 8 cm (3 in) high and 60 cm (2.0 ft) across. The foliage is green and rough and the flowers are 3 cm in diameter and yellow in colour with an orange disc. [52] It makes an ideal plant for rockeries, and strikes easily from cuttings during the spring growing period.
Melilotus officinalis can be an annual or biennial plant, and is 120–180 centimetres (4–6 ft) high at maturity. [3] Leaves alternate on the stem and possess three leaflets. Yellow flowers bloom in spring and summer and produce fruit in pods typically containing one seed. Seeds can be viable for up to 30 years.
The large, showy, golden yellow, trumpet-shaped flowers are in clusters at the ends of branches. The corolla of the flower is bell- to funnel-shaped, five-lobed (weakly two-lipped), often reddish-veined in the throat and is 3.5 to 8.5 cm long. Flowering takes place from spring to fall, but more profusely from spring to summer.
Each flower survives a single day, while leaves can persist from 23–43 days. [3] Seeds are released 32–60 days following the end of the flowering period and can germinate under hypoxic conditions. [11] [12] In fall, the aboveground biomass of N. peltata dies, sinks to the substrate and decomposes, and the plant overwinters as dormant ...
Hibiscus trionum, commonly called flower-of-an-hour, [2] bladder hibiscus, bladder ketmia, [2] bladder weed, puarangi and venice mallow, [2] is an annual plant native to the Old World tropics and subtropics. It has spread throughout southern Europe both as a weed and cultivated as a garden plant. It has been introduced to the United States as ...
The flowers are bright yellow, 7–10 cm (2.8–3.9 in) across, with the typical iris form. The fruit is a dry capsule 4–7 cm (1.6–2.8 in) long, containing numerous pale brown seeds. I. pseudacorus grows best in very wet conditions, and is common in wetlands, where it tolerates submersion, low pH , and anoxic soils.