A Grammatical Dictionary of Botanical Latin

triginta (num.adj.indecl.): 30, thirty;

- folia venis triginta, leaves with thirty veins.

FLOS disciformis, e foliis perigonialibus quatuor, ex ovato-concava basi lanceolato-linearibus, genitalibus masculis plus triginta, femineis duobus, paraphysibusque clavatis constat (Hedwig) the flower disciform, composed of four perigonial leaves, from an ovate-concave base, the male sex-organs more than 30, with the females two. [triginta = indeclinable].

- Deinde mittuntur in vasculo, cui fontana aut pluvialis aqua miscetur, et opertum vas per triginta dies relinquitur ac subinde, quantum sublatum fuerit aceti ad usum, tantum redditur aquae ad reparationem;” finally it is sent into a vessel, with which spring water and rain-water is mixed, and the covered vessel is left for 30 days, and from then on, as much of the vinegar was drawn off for use, as waters are put back [i.e. replenished] for restoration [i.e. of the volume].