1) Fern genus 2) Genus schizaea 
Schizaea is a small genus of specialized ferns in the family Schizaeaceae. Some species are very small and inconspicuous, and so may often be overlooked in nature. The genus is distinctive and not at all like the common conception of a fern; the barren fronds (trophophylls) are grass-like, and the spore-bearing fertile frond (sporophyll) is simila...
(from the article `fern`) ...sporangia often borne on specialized pinnae, or leaf segments; sporangium with its annulus composed of a subapical uniserial ring of thickened ...
[n] - type genus of the Schizaeaceae cosmopolitan especially in tropics
genus Schizaea noun type genus of the Schizaeaceae cosmopolitan especially in tropics; small leptosporangiate ferns: curly grass fern