A Grammatical Dictionary of Botanical Latin

triplex,-icis (adj.B), abl. sg. triplici, gen. pl. triplicium [ter + plico]: threefold, triple; as a substantive triplex,-icis (s.n.III), a threefold portion, a triple, “thrice-repeated” (Lindley) = Gk. triplax,-akos, a masc. and fem. noun; = triphasios,-a,-on: a Gk. adjective threefold; also simply ‘three’[> Gk. treis] (Liddell & Scott);

      singular                             plural 
Nom.  triplex                    (m/f) triplices (n.) triplicia 
Gen.  triplicis                        triplicium 
Dat.  triplici                         triplicibus 
Acc.  (m/f) triplicem  (n.) triplex    (m/f) triplices  (n.) triplicia 
Abl.  triplici                         triplicibus

- deae triplices, abl. pl. deis triplicibus, the three goddesses (the Fates).

- annulo singulari, duplici vel triplici, with the annulus single, double or triple.

- (Diderma; a slime mold] hypothallo inconspicuo; peridio triplici, pariete externo cartilaginoso, dehiscente stellato, pariete medio calcareo, saepe ad externum connato, pariete interno membranaceo, saepe ad medium connato, hypothallus inconspicuous; with the peridium triple, with the outer wall cartilaginous, upon dehiscing, stellate, with the middle wall calcareous, often fused to the outer one, with the internal wall membranaceous, often fused to the middle.

- [fungi] sphaerulae papillatae , demum plus minus bullatae, nonnullae ad volumen triplex fere inflatae (S&A), the sphaerules with little papillae, then more or less blister-shaped, some inflated to nearly three times [i.e. triple] their volume.

Geastrum triplex, an “Earthstar” fungus.