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.
Bird's Nest Fern Another of our favorites, bird's nest fern is a slow-growing plant with bright green fronds that radiate from the center of the plant, creating a vase or bird's nest shape. It's versatile and easy to grow. Silver Brake Fern Create a distinctive look in your home with this fern.
Five varieties of the species are widely recognized: 1  Allium canadense var. canadense - most pedicels replaced by bulbils rarely producing fruits or seeds, most of the range of the species. 2  Allium canadense var. ecristatum Ownbey tepals deep pink and rather thick, coastal plain of Texas. 3  Allium canadense var.