A Grammatical Dictionary of Botanical Latin

vos: ‘you’ (pl.) in Eng.the plural of the second personal pronoun (the singular being ‘tu,’ q.v.,‘you’); this pronoun refers to the persons (people) addressed by the speaker;

        plural
Nom. vos      (you)
Gen. vestrum  (of you)
     vestri   (of you)
Dat. vobis    (to/for you)
Acc. vos      (you)
Abl. vobis    (by/with/from you)

- Mougeot et Nestler muscorum Vogesiacorum vos compotes fecerunt, Mougeot and Nestler made you (pl.) [intellectual] masters of the mosses of [the Vogesian Mountains] [i.e. by the issuance of an exsiccate from this area]; vos = acc. pl.

- semina in exemplaribus vobis visa subrotunda, the seeds in samples seen by you subrotund.

- in omnibus a vobis examinatis speciminibus, in all specimens examined by you (pl.).

NOTE: the genitives vestrum and vestri are not used to indicate possession. ‘Your’ is indicated using the possessive pronominal adjectives vester (m.), vestra (f.), vestrum (n.) (adj.A), q.v.

a. ‘vestrum’ was used only as partitive genitive (‘genitive of the whole’)

- magna pars vestrum, a great part of (all you).

- quis vestrum, who of (all you).

b. ‘vestri’ was used only as an objective genitive;

- timor vestri, fear of (all you).

- caritate vestrum pro nobis, with the affection of (all you) for us.

NOTE: the genitive plural of the adjective ‘vester, vestra, vestrum,’ i.e. vestrorum or vestrarum, is contracted to vestrum here and can be used partitively: vestrum omnium, 'of all of you' [vestrorum omnium]; but una vestrarum, one of you (women understood, i.e. one of you women).

NOTE: the nominatives of the personal pronouns were only used to stress the subject(s), otherwise, they were omitted and the pronoun is understood by the verbal endings: -tis;

- vos putatis numerus specierum Rutacearum parvior quam Rosacearum, you (yourselves) consider the number of species of the Rutaceae smaller than of the Rosaceae. ‘vos’ may be deleted and the subject is understood by the form of the verb ‘putatis’, ‘you (pl.) consider.’

- in speciminibus Valerianae saliuncae vos examinatis, in the specimens of Valeriana saliunca you yourselves examined.

NOTE: ‘cum’ is a preposition used with the ablative case; when used with the pronoun ‘vobis’ (the ablative of ‘vos’), the preposition is joined to the end of the pronoun: vobiscum, ‘with you’ (pl.);

- species vobiscum verae sunt, the species with you are true.

- specimina vobiscum curata, the specimens cared for by you.