Taxonomic history:
   1753: Linnaeus described this species as Mimosa quadrivalvis in Species Plantarum, 1st ed., p. 522.
   today: The current name for this species is Mimosa quadrivalvis L. var. quadrivalvis

original Latin diagnosis
Mimosa aculeata, foliis bipinnnatis, caule quadrangulo, aculeis recurvis, leguminibus quadrivalvibus.

English translation
Mimosa prickly; with leaf blades bipinnate; with a stem quadrangular; with prickles recurved; [and] with fruits four-valved.

English translation with commentary

Mimosa	Mimosa
prickly;	aculeata - nominative singular feminine of group A adjective aculeatus, -a, -um; modifies Mimosa
with leaf blades	foliis - ablative plural of second declension neuter noun folium, folii
bipinnate;	bipinnatis - ablative plural neuter of group A adjective bipinnatus, -a, -um; modifies foliis
with a stem	caule - ablative singular of third declension masculine noun caulis, caulis
quadrangular;	quadrangulo - ablative singular masculine of group A adjective quadrangulus, -a, -um; modifies caule
with prickles	aculeis - ablative plural of second declension masculine noun aculeus, aculei
recurved;	recurvis - ablative plural masculine of group A adjective recurvus, -a, -um; modifies aculeis
[and]	[added for smoother reading]
with legumes	leguminibus - ablative plural of third declension neuter noun legumen, leguminis
four-valved.	quadrivalvibus - ablative plural neuter of group B adjective quadrivalvis, -is, -e; modifies leguminibus