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.
Pterophyta. Plants in the Pterophyta division are the most familiar seedless vascular plants. They are commonly called ferns and have divided, feathery leaves called fronds. Ferns grow well in damp shady areas, such as woodlands or along stream banks, and the rhizomes and roots of ferns help prevent soil erosion.