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.
A fern is a leafy, flowerless plant that grows in areas of high moisture. Ferns are vascular plants, in that they have a complex internal vein structure that supplies nutrients to the outer regions of the plant. fern is a leafy, flowerless plant that grows in areas of high moisture. Ferns are vascular plants, in that they have a complex internal vein structure that supplies nutrients to the outer regions of the plant.