Reproductive morphology of the lycophytes. Lycophyte sporangia are stalked and kidney-shaped, as in the zosterophyllophytes. In the earliest lycophyte groups, such as the Asteroxylales, the sporangia are oriented across the leaf, so that the widest dimension of the sporangium is perpendicular to the axis of the leaf. cross section of a member of the order Lycopodiales is shown above. You can see the large red xylem cells because they have been stained with a chemical which sticks to the lignin in the cell walls of that tissue. Notice that there are other kinds of tissues among the xylem.
(February 2013) A standing rib roast, also known as prime rib, is a cut of beef from the primal rib, one of the nine primal cuts of beef. While the entire rib section comprises ribs six through 12, a standing rib roast may contain anywhere from two to seven ribs.
Prime rib can be either a steak sliced from the roast or the entire roast. In other words, it isn't a precise term. The standing rib roast is more precise. You can get more than one prime rib steak from the standing rib roast. The standing rib roast must have come from at least 2 of the ribs. A rib eye roast is a standing rib roast with the ribs removed. The prime rib (standing rib roast or steak cut from that area) is actually not required to be USDA prime beef.