Taxonomic history:
   1753: Linnaeus described this species as Salvia sclarea in Species Plantarum, 1st ed., p. 27.
   today: The current name for this species is Salvia sclarea L.

original Latin description
Salvia foliis rugosis oblongo-cordatis serratis, floralibus calyce longioribus concavis acuminatis.

English translation
Salvia with leaf blades rugose, oblong-cordate, [and] serrate; with floral [leaves] than the calyx longer, concave, [and] acuminate.

English translation with commentary

Salvia	Salvia
with leaf blades	foliis - ablative plural of second declension neuter noun folium, folii
rugose,	rugosis - ablative plural neuter of group A adjective rugosus, -a, -um; modifies foliis
oblong-cordate,	oblongo-cordatis - combining form of group A adjective oblongus, -a, -um + ablative plural neuter of group A adjective cordatus, -a, -um; modifies foliis
[and]	[added for smoother reading]
serrate;	serratis - ablative plural neuter of group A adjective serratus, -a, -um; modifies foliis
with floral [leaves]	floralibus - ablative plural neuter of group B adjective floralis, -is, -e (used substantively)
than the calyx	calyce - ablative singular of masculine noun calyx, calycis; object of longioribus
longer,	longioribus - comparative degrree, ablative plural neuter of group A adjective longus, -a, -um; modifies floralibus
concave	concavis - ablative plural neuter of group A adjective concavus, -a, -um; modifies floralibus
[and]	[added for smoother reading]
acuminate.	acuminatis - ablative plural neuter of group A adjective acuminatus, -a, -um; modifies floralibus