1) Fern genus 2) Genus leptopteris 
The fern genus Leptopteris is a small group of plants found growing in the Pacific Islands, New Guinea and Australia. They are similar to ferns in the related genus Todea. Species include: ...
(from the article `fern`) ...maturing nearly simultaneously, intermediate between eusporangia and leptosporangia, the annulus a lateral patch of thick-walled cells; petioles ... the royal fern family, the only family of the fern order Osmundales. A primitive group consisting of three present-day genera of large ferns—Osmunda, ... ...
[n] - including some ferns sometimes placed in genus Todea
genus Leptopteris noun including some ferns sometimes placed in genus Todea