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.
Staghorn ferns are members of the Polypodiaceae plant family, and belong to the genus Platycerium. Eighteen species are presently recognized along with many varieties and hybrids. Staghorns are tropical plants native to the Philippines, Southeast Asia, Indonesia, Australia, Madagascar, Africa, and America.he most common species in cultivation and also the easiest to grow. Produces large numbers of pups, eventually forming a very large plant. Dark green color. Hardy to temperatures of around 30Â°F (â1.1Â°C) for short periods. Many varieties are available. Native to Australia and New Guinea.