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.
The three terms that cause the most confusion are ârib roast,â âribeye roast,â and âprime rib.â Here's what you need to know: 1  A rib roast, like the name says, has the bones left in. 2  A ribeye roast is a rib roast with the bones removed.  A prime rib doesn't refer to a specific cut of beef. Rather, it is another name for sliced portions from a beef rib roast or ribeye roast after it is roasted. These roasts come from the rib primal section that consists of the 6th through 12th ribs. TIP: It's better to ask the butcher for a rib or ribeye roast instead asking for a prime rib.