Are Sporobolus and Rumex both genus of plants ?
yes
Title: Sporobolus
Passage: Sporobolus is a nearly cosmopolitan genus of plants in the grass family.
Title: Rumex
Passage: The docks and sorrels, genus Rumex L., are a genus of about 200 species of annual, biennial, and perennial herbs in the buckwheat family Polygonaceae.
Title: Rumex hydrolapathum
Passage: Rumex hydrolapathum Huds.  (great water dock; water dock; giant water dock) is a species of perennial herbaceous plants in the genus "Rumex" native to fens and freshwater banks of Europe and Western Asia.  It is the tallest species in the genus, with flowering stems attaining a height of up to 2 m .  It is one of the small number of decaploid organisms, containing two hundred individual chromosomes.
Sporobolus Rumex