Egeria densa wani nau'in tsiro ne na tsiron ruwa wanda aka fi sani da "Weed waterweed Brazil" ko "chicken waterweed". Wani tsiro ne da aka nitse, tushen ruwa wanda asalinsa ne daga Kudancin Amurka, amma an gabatar da shi zuwa wasu sassan duniya a matsayin shukar aquarium kuma don amfani da shi a cikin lambunan ruwa. Ana ɗaukarsa nau'in ɓarna a wasu yankuna, inda zai iya girma da sauri kuma ya shake tsirran ruwa na asali.