The primary cause of respiratory alkalosis is hyperventilation. This rapid, deep breathing can be caused by conditions related to the lungs like pneumonia, lung disease, or asthma. More commonly, hyperventilation is associated with anxiety, fever, drug overdose, carbon monoxide poisoning, or serious infections.
By Rhonda Stewart. Lady Fern is a native perennial upright fern that can reach 2-5 feet in height. The leaves are a bright green, with a fine-textured lacy appearance, and single fronds can measure up to 1â wide and 3â in length. The frond stalks are green to purple or red in color.
Southern woods fern is a good one for massing in shaded, moist beds. Another easy to grow group of ferns are in the genus Athyrium, the lady ferns. A. filix-femina, the true lady fern, is a variable plant popular during the Victorian fern craze. A number of dissected and oddly formed frond types are available.