Panicum n. : A genus of grasses, including several hundred species, some of which are valuable; panic grass.

Example:
Is seed that does not germinate nutritionally worthless and if so by how much percent ?

Taxonomy
Panicum, unranked, grasses, introduced species, free encyclopedia, Panicum virgatum, genus, floret, Australia, perennial grasses, Panicum amarum, Panicum anabaptistum, Panicum anceps, Panicum brevifolium, Panicum capillare, Panicum coloratum, Panicum deustum, Panicum dregeanum.

Defination from the web:
Panicum is a large genus of about 450 species of grasses native throughout the tropical regions of the world, with a few species extending into the northern temperate zone. ... has 29 native and 9 introduced species of Panicum.(Grasses of the Tweed Valley of NSW: An introductory ...