A Grammatical Dictionary of Botanical Latin

Signum,-i (s.n.II), abl.sg. signo: a sign, a mark, a print or impression (like a footprint), token; a sign such as the ensign or banner, a military standard; cf. nota,-ae (s.f.I); Gk. stigma,-atis s.n.III, a mark or spot; see mark; cf. nota,-ae (s.f.I); character;

- signa punctuationis, punctuation marks.

- signa pluviarum, signs of rain.

- porro signum [+] post diagnosin speciei, nobis speciem non visam esse, indicat (Mueller), furthermore, the mark [a dagger] after the diagnosis of the species, indicates the species was not seen by us [i.e. by me].

- Sarcochilus olivaceus et Sarc. unguiculatus jam eadem nota recedunt, anterior quoque sepalis obtusis et labelli lobis lateralibus acutis. Ceterae species: S. falcatus, ad versus, parviflorus, croceus, Calceolus et fusco-luteus aliis signis a S. Barklyano longius distant (F. Mueller), Sarcochilus olivaceus and S. unguiculatus, moreover, depart [i.e. are separate] by the same characteristic, the former also by the obtuse sepals and by the acute lateral lobes of the labellum. The other species: S. falcatus, as opposed to [S.] parviflorus, croceus, Calceolus and fusco-luteus by other tokens are farther distant from S. Barklyanus.

- ceterae species: S. falcatus, ad versus, parviflorus, croceus, Calceolus et fusco-luteus aliis signis a S. Barklyano longius distant (F. Mueller), the other species: S. falcatus, as opposed to [S.] parviflorus, croceus, Calceolus and fusco-luteus by other tokens are farther distant from S. Barklyanus.

- omnes species ex speciminibus in herbario meo asservatis descripiae, designantur solito signo ( v. s. ) (DeCandolle), all the species described are from specimens preserved in my herbarium, are marked by the usual sign (v.s.).

- Interdum appendix ex apice loculi ad latus alae crassius adest, et alterius loculi abortivi signum fert (DeCandolle), sometimes an appendage is more thickly present from the apex of the locule to the side of the wing, and carries the mark of the other abortive locule.

- De utilitate explorandorum in aegris excrementorum ut signorum (The Utility of Examining Signs of Disease in the Excrement of the Sick): Hermann Boerhaave (1668-1738), a Dutch botany professor.

The signa,-orum (pl.n.II) are also the constellations (i.e. the heavenly signs);

- ortus occasusque signorum, the rising and setting of the constellations.