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).
Characteristics: The leaves are up to 7 inches long, leathery, with a brown, very hairy under-surface. Examine the leaves to observe that they are slightly triangular, broadest near the tip. Blackjack oak is often a short, contorted tree, growing on poor soils.ed maple is brilliant scarlet, orange, or bright yellow in the autumn. Location: Red maple is a very common tree in the forest. It grows well on moist soils of stream banks, valleys, and dry ridges. Use: The buds and seeds are favorite food for squirrels and songbirds.