Taxonomic history:
   1753: Linnaeus described this species as Erica umbellata in Species Plantarum, 1st ed., p. 352.
   today: The current name for this species is Erica umbellata L.

original Latin diagnosis
Erica antheris bicornibus exsertis, corollis globosis umbellatis, foliis ternis acerosis glabris.

English translation
Erica with anthers two-horned [and] exserted; with corollas globose [and] umbellate; [and] with leaves in threes, needle-like, and glabrous.

English translation with commentary

Erica	Erica
with anthers	antheris - ablative plural of first declension feminine noun anthera, -ae
two-horned,	bicornibus - ablative plural feminine of group B adjective bicornis, -is, -e; modifies antheris
[and]	[added for smoother reading]
exserted;	exsertis - ablative plural feminine of group A adjective exsertus, -a, -um
with corollas	corollis - ablative plural of first declension feminine noun corolla, -ae
globose	globosis - ablative plural feminine of group A adjective globosus, -a, -um; modifies corollis
[and]	[added for smoother reading]
umbellate;	umbellatis - ablative plural feminine of group A adjective umbellatus, -a, -um; modifies corollis
[and]	[added for smoother reading]
with leaves	foliis - ablative plural of second declension neuter noun folium, -i
in threes,	ternis - ablative plural neuter of group A adjective terni, ternae, terna; modifies foliis
needle-like,	acerosis - ablative plural neuter of group A adjective acerosus, -a, -um; modifies foliis
[and]	[added for smoother reading]
glabrous.	glabris - ablative plural neuter of group A adjective glaber, glabra, glabrum; modifies foliis