The sections of the light spectrum which the âredâ and âgreenâ cones perceive overlap and this is why red and green colour vision deficiencies are often known as red/green colour blindness and why people with red and green deficiencies see the world in a similar way.
Boston Fern The most common indoor fern, Boston ferns are long-lived plants that can reach more than 5 feet tall and wide at maturity (though indoors they rarely reach that size). Fern breeders have released a large number of varieties -- from selections with golden fronds to fantastically frilled fronds.
Other Non-flowering Plants: Non-Gymnosperms. 1  Ferns-Common plants, ferns are vascular plants that have a stem, leaf and root. 2  Ferns can be found in forests, but also are cultivated to improve the quality of soil or to improve air quality. 3  They are also used ornamentally in homes and some people even eat the plant. Cycads-Also woody plants, cycads are found primarily in tropical or subtropical climates such as Africa, Asia, India, Madagascar, Mexico, the southeastern United States, Japan, Australia, South America, Central America, and Melanesia. 2  Ginkgo-Most of the ginkgo have become extinct.