It should be noticed that the lower portion of the stalk, on which there are no pinnæ, is called a stipes.
The stipes or stalks of Laminaria cloustoni are used in surgery.
As a rule, the stipes will be about one-third of the whole frond, the leafy portion being long and tongue-shaped.
The stipes is somewhat longer than the rachis, and it is of a whity-green colour.
The stipes is about the same length as the leafy portion of the frond.
Scales of rhizome and stipes narrow, of firm texture and with thick-walled cells.
stipes of the fertile fronds are about twice as long as the sterile, making two tiers of fronds.
stipes tufted, two to four inches long, brownish beneath, green above.
stipes dark purple or reddish-brown, polished and decidedly hairy and harsh to the touch, at least on one side.
The fronds remain green through the winter but the stipes weaken and fall over.