Medical Definition of ERYTHROPOIESIS. : the production of red blood cells (as from the bone marrow)âcalled also erythrocytopoiesis, erythrogenesis. â erythÂ·roÂ·poiÂ·etÂ·ic \-Ëet-ik\ adjective.
Horticultural. Pop ash has several redeeming characteristics that make it an interesting, attractive, and useful landscape tree. Its small to medium size, wide spreading crown, crooked and multi-stemmed trunk, glossy and compound leaves, and fast growth rates make it a decorative addition to landscapes.lowers are 1/8 inch long and bloom in early spring before leaves emerge. The blooms appear in clusters of many yellow (male) and green (female) flowers. Fruits are 1Â½ to 2 inch long elliptical samaras (winged seeds) that have 1 wing (or occasionally 3).
Overview of American Sweetgum: A common deciduous tree in the United States is the American sweetgum. Distinguishing characteristics are the spiky fruits and the star-shaped leaves that put on a show in the fall. This is not related to the eucalyptus trees, which are sometimes called gum trees.It is also not related to the black gum (Nyssa sylvatica).istinguishing characteristics are the spiky fruits and the star-shaped leaves that put on a show in the fall. This is not related to the eucalyptus trees, which are sometimes called gum trees. It is also not related to the black gum (Nyssa sylvatica).