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Linnaeus's flower clock was a garden plan hypothesized by Carl Linnaeus that would take advantage of several plants that open or close their flowers at particular times of the day to accurately indicate the time. [1] [2] According to Linnaeus's autobiographical notes, he discovered and developed the floral clock in 1748. [3]
Like many irises, Iris tenax has large and showy flowers. The flowers bloom in mid to late spring and are usually lavender-blue to purple, but blooms in white, yellow, pink, and orchid shades are known to sometimes occur. The leaves are very slender for an iris, seldom over 5 mm broad; the plant is often mistaken for a type of grass when not in ...
Iris virginica is a perennial plant that grows up to 0.6–0.9 m (2–3 ft) tall. The plant's sword-shaped basal leaves are erect or sometimes arching and measure up to 91 cm (3 ft) long and 2.5 cm (1 in) across at the base.
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Hopkins' bioclimatic law states that in North America east of the Rockies, a 130-m (400-foot) increase in elevation, a 4° change in latitude North (444.48 km), or a 10° change in longitude East (two-thirds of a time zone) will cause a biological event to occur four days later in the spring or four days earlier in the fall. [1]
Colonel Allensworth State Historic Park: Yellow goldfields at this park are in bloom and may last another month, according to the parks department. The park is northwest of Bakersfield. The park ...
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(children's state flower) Mirabilis jalapa: 2015 [10] Delaware: Peach blossom: Prunus persica: 1953 [11] District of Columbia: American Beauty Rose: Rosa: 1925 [4] Florida: Orange blossom (state flower) Citrus sinensis: 1909 [12] Tickseed (state wildflower) Coreopsis spp. 1991 [13] Georgia: Cherokee rose (state floral emblem) Rosa laevigata ...