The sori are placed on veins which branch out from the mid-veins of the pinnules.
The sori are borne in lines on either side of the mid-vein of the lobe.
The sori are quickly confluent, and all trace of the indusium is soon lost.
The sori are very abundant, but as these are small they should be carefully examined.
The sori are placed on either side of the vein in the middle of the pinnules.
The sori are narrow, and when young are covered with an indusium.
The sori are close to the margin of the lobes, and vary from one to twelve to a lobe.
Nearly the whole of the underside of the frond bears the sori.
Polýstichum is the Greek for many rows, the sori of some species being in many ranks.
The sori are quite naked, no indusia being present at any time.