A Grammatical Dictionary of Botanical Latin

vester m., vestra f., vestrum n. (adj.A): second person plural possessive pronominal adjective: your, yours, of you all, of all you; of or belonging to you (pl.); the word is used with adjective force and takes the gender of the associated noun or nouns irrespective of whether 'you' are a single or mixed group of men or women;

               singular                              plural
          m.     f.       n.                  m.        f.        n.   
Nom.   vester  vestra   vestrum             vestri   vestrae    vestra     
Gen.   vestri  vestrae  vestri            vestrorum  vestrarum  vestrorum   
Dat.   vestro  vestrae  vestro                       vestris 
Acc.   vestrum vestram  vestrum             vestros  vestras    vestra   
Abl.   vestro  vestra   vestro                       vestris

NOTE: the genitive plural of the adjective ‘vester, vestra, vestrum,’ i.e. vestrorum or vestrarum, is contracted to vestrum and can be used partitively:

vestrum omnium, 'of all of you' [vestrorum omnium]; but una vestrarum, one of you (women understood); see vos;

Some examples based on those given by Glare (2006);

- vestra familia, your family (the family of all of you)

- vestra voluntate, by your choice, such as by the choice of two parents.

- auctoritas nominis vestri dubia, the authority of your name doubtful, such as the name proposed by two authors.

- apud vestras litteras, in your letter (epistle).

- vestris moribus similis, similar to your custom (habits).

- sententia vestrorum collegarum, the opinion of your (as males) colleagues.

- Te autem non tacebo Galliae simul et Germaniae decus, aevi vestri lux et Gloria summa, moreover, I will not pass over in silence you, at once the ornament of France and Germany, the light and highest glory of your generation [i.e. A. von Humboldt].