Sandy uplands produce a short stalk which bears fairly well.
Long, including the stalk; it is characterized by having the lower pinnae of the frond deflexed; it is generally distributed in Britain, though not common.
He would pollinate a wheat stalk, then cover it with a trash bag to prevent contamination by other plants.
That is also the case because humans couldn't do a very good job at a stalk-by-stalk approach.
A ventral vessel occurs on the anterior side of the metasome and forms a loop extending down the entire length of the stalk, while a " heart " projects into the cavity of the pericardium, probably connected on the ventral side of the notochord with the ventral vessel, and on its dorsal side with the dorsal vessel.