1) Fern genus 2) Genus marsilea 
Spheroidea Dulac Zaluzianskia Neck. | subdivision_ranks = Species | subdivision = See text. }} Marsilea is a genus of approximately 65 species of aquatic ferns of the family Marsileaceae. The name honours Italian naturalist Luigi Ferdinando Marsigli (1656–1730). These small plants are of unusual appearance and do not resemble common ferns. Commo...
(Pepperwort, Water Clover) These aquatic perennials are commonly known as Pepperwort or Water Clover. These plants resemble four-leaf clovers. M. mutica var. Variegata produces vigorous-growing rhizomes from which sprout stems topped with greenish-yellow to brown patterned leaves, which often float on the surface of the water. If Water Clovers are ...
[n] - clover ferns
genus Marsilea noun clover ferns