pinnule वाक्य

It differs from that species in having single sori at the base of fertile tertiary pinnules.
"C . cranhamii " has sori arranged in two rows on narrow pinnules.
Characteristically of this species, pinnule veins bear whitish scales with star-shaped setae . indusia.
They have no true gonads, producing their gametes from genital canals found inside some of the pinnules.
The sori are circular and present on the underside of the pinnules away from the margins ( edges ).

The specific epithet " dimorpha " refers to the strong morphological differences between fertile and sterile pinnules.
The smallest segments of the fronds are the pinnules, which are wedge-shaped, rectangular or trapezoid.
The arms are composed of articulating ossicles held together by ligaments, and the pinnules have a similar structure.
Like other sea lilies, gametes are produced in specialised areas of the pinnules and liberated into the sea.
In the Cyatheaceae, the sori occur away from the margins of the pinnules, and are elongate or rounded.