Taxonomic history:
1753: Linnaeus described this species as Cyperus haspan in Species Plantarum, 1st ed., p. 45.
today: The current name for this species is Cyperus haspan L.
original Latin diagnosis
Cyperus culmo triquetro folioso, umbella supradecomposita, spiculis umbellato-sessilibus.
English translation
Cyperus with the culm three-angled [and] leafy; with an umbel many times divided; [and] with spikelets umbellate-sessile.
| Cyperus | Cyperus |
| with the culm | culmo - ablative singular of second declension masculine noun culmus, -i |
| four-angled | triquetro - ablative singular masculine of group A adjective triquetrus, -a, -um; modifies culmo |
| [and] | [added for smoother reading] |
| leafy; | folioso - ablative singular masculine of group A adjective foliosus, -a, -um; modifies culmo |
| with an umbel | umbella - ablative singular of first declension feminine noun umbella, -ae |
| many times divided; | supradecomposita - ablative single femiine of perfect passive participle of third conjugation verb supradecompono, supradecomponere, supradecomposui, supradecompositum; modifies umbella |
| [and] | [added for smoother reading] |
| with spikelets | spiculis - ablative plural of first declension feminine noun spicula, -ae |
| umbellate-sessile. | umbellato-sessilibus - umbellato (combining form of group A adjective umbellatus, -a, -um) + sessilibus (ablative plural feminine of group B adjective sessilis, -is, -e); modifies spiculis |