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Night-blooming cereus is the common name referring to many flowering ceroid cacti that bloom at night. The flowers are short lived, and some of these species, such as Selenicereus grandiflorus , bloom only once a year, for a single night, [ 1 ] though most put out multiple flowers over several weeks, each of which opens for only a single night.
Iris chrysographes is a clump-forming herbaceous perennial with creeping rhizomes.The leaves are linear and greyish green, and up to 70 cm (28 in) long. The hollow flowering stems, 25–30 cm (9.8–11.8 in) long, bear slightly scented flowers in early summer.
This absence results in a primarily black appearance of the central eye. Aniridia can be congenital , typically affecting both eyes, or caused by a penetrant injury. [ 1 ] Congenital aniridia is not simply an iris defect but a more complex condition affecting multiple parts of the eye, with macular and optic nerve hypoplasia , cataract , and ...
Iris × germanica grows up to 120 cm (47 in) high and 30 cm (12 in) wide. [5] The roots can go up to 10 cm (3.9 in) deep and it is a rhizomatous perennial that blooms mid to late spring.
Iridescence is caused by wave interference of light in microstructures or thin films. Examples of iridescence include soap bubbles, feathers, butterfly wings and seashell nacre, and minerals such as opal. Pearlescence is a related effect where some or most of the reflected light is white. The term pearlescent is used to describe certain paint ...
Iris sibirica, commonly known as Siberian iris or Siberian flag, is a species of flowering plant in the family Iridaceae.It is a rhizomatous herbaceous perennial, from Europe (including France, Italy, Switzerland, Austria, Czech Republic, Slovakia, Germany, Hungary, Poland, Romania, Bulgaria, Former Yugoslavia, Belarus, Estonia, Latvia, Lithuania, Moldova, Ukraine and northern Turkey) and ...
Iris giganticaerulea, the giant blue iris, is a species of iris, in the subgenus Limniris, in the series Hexagonae.It is a rhizomatous perennial, from northern America.It has long bright green leaves, very tall stems and one or two musky fragrant flowers in a range of blue shades (pale, bright, dark, lavender and violet) or rarely white.
Iris tectorum (also known as roof iris, Japanese roof iris and wall iris) is a plant species in the genus Iris, it is also in the subgenus Limniris. It is a rhizomatous perennial. It is native of China, Korea and Burma, with lavender-blue, bluish-violet, purple-blue, blue-lilac or sky blue flowers. There is a white form as well.