Fagus sylvatica pendula vs Fagus pendula

Fagus sylvatica pendula and Fagus pendula both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fagus sylvatica pendula	Yes	No	No	No
Fagus pendula	Yes	No	No	No

As nouns, Fagus sylvatica pendula and Fagus pendula are synonyms defined as:

Fagus sylvatica pendula and Fagus pendula: variety of European beech with pendulous limbs

Other synonyms of Fagus sylvatica pendula include weeping beech.

Fagus sylvatica pendula (noun)	Fagus pendula (noun)
variety of European beech with pendulous limbs	variety of European beech with pendulous limbs