About Astragalus pycnostachyus A.Gray
This species, commonly known as marsh milkvetch, is a perennial herb. It grows as a thick, erect clump of hollow, woolly stems that reach 40 to 90 centimeters in height. Its leaves can grow up to 15 centimeters long, and are composed of numerous narrow oval-shaped leaflets. Its inflorescence is a cluster holding many flowers, which range in color from whitish to greenish, and each flower grows up to one centimeter long. Its fruit is an inflated, papery legume pod that bears a small hooked beak at its tip.
