A Grammatical Dictionary of Botanical Latin

tropical: tropicus,-a,-um (adj.A), ‘or belonging to a turn or turning, tropical;’ tropical in the sense of ‘very hot:’ aestuosus,-a,-um (adj.A);

- regiones aestuosae, hot or tropical regions.

- species inter tropicos in utroque orbe vigentes, species between the tropics on both sides of the world thriving (here tropicos is rendered in masc. acc. pl.).

- neotropicus, relating to the New World tropics; palaeotropicus, relating to the Old World tropics; pantropical: pantropicus,-a,-um (adj.A).

- Capricornus tropicus, ‘where the sun turns back’, i.e. “the sign of the zodiac which the sun enters at the winter solstice (opp. Cancer)” (Lewis & Short).

- species intertropicae littora limosa ad aestuaria fluviorum vegetatione arborea insalubri dense obumbrant, the intertropical species the muddy shores at the estuaries of rivers with unhealthy woody vegetation densely cover over (Stearn).

- species ad 8 in aquis dulcibus Americae temperatae v. tropicae late dispersae (B&H), species up to 8, in the fresh waters of temperate or tropical America widely dispersed.

- Species genuinae biovulatae 5, in Asia tropica crescentes (B&H), the authentic biovulate species are 5, growing in tropic Asia.

extratropicus,-a,-um (adj.A): situated outside of the tropics; e.g. middle latitudes;

- species ad 6, Australia extratropicae et subtropicae incolae (B&H), species to 6, dwelling outside of the tropics and subtropics [i.e. regions near the tropics].

- per Australiam extratropicam passim diffusa, nec non in Tasmania proveniens (F. Mueller), throughout extratropical Australia [i.e. outside of the tropics] everywhere dispersed, and also turning up in Tasmania.

intratropicus,-a,-um (adj.A) = intertropicus,-a,-um (adj.A): “situated between or within the tropics; relating to regions within the tropics; tropical; intertropics: the zones between the tropics of Cancer and Capricorn or any region in them” (WIII).

subtropicus,-a,-um (adj.A): “nearly tropical: the regions bordering on the tropical zone; of a plant, requiring climatic conditions typical of subtropical regions to survive” (WIII).

Note: ‘inter tropicos’ implies the masculine nouns ‘circulus’ or ‘orbis’; see 'tropic.’