A Grammatical Dictionary of Botanical Latin

-jugus,-a,-um (adj.A); -jugatus,-a,-um (part.A): in L. comp., -paired, -jugate, often used for the paired leaves of mosses in the genus Fissidens; a reference to the number of peaks in a mountain range [> L. jugum,-i (s.n.II), q.v., a pair, couple, in reference to a pair of animals yoked together];

NOTE: - decemjugis,-e (adj.B), ten-yoked, ten joined together, as a chariot with ten horses in five pairs, i.e. the objects joined are ten (the pairs only five): decemjugis,-is (s.m.III), a ten-horse chariot (Lewis & Short); however, in botany, each -jugis, -jugus, etc. is a ‘pair’, not two objects, as in the horses and chariot. decemjugis would not be ten leaves in five pairs, but 10 pairs (20 leaflets).

- unijugus,-a,-um (adj.A), one pair of leaflets; bijugus, two pairs, etc. (Lindley); crassijugus, with thick fruit-ridges (Apiaceae); furcijugus, with forked fruit-ridges; novem-jugum with nine ridges; latijugus, with wide ridges; plurijugus, with many ridges; vittijugus, with banded ridges, with ridges with oil-tubes.

- foliis pinnatis bijugis cum impari (DeCandolle), with the leaves pinnate, in two pairs with an unequal pair [i.e. with one leaflet at the apex of the rachis; see impar, gen.sg. imparis (adj.B)].

- folióla numerosa, petiolata, opposita, plerumque 6-juga cum terminali impari (Swartz), the leaflets numerous, petiolate, opposite, usually 6-paired with the terminal [one] unequal [i.e. not in a pair].

- pinnae 2-3-jugae, foliola 1-2-jugae, the pinnae 2-3-paired, the leaflets 1-2-paired.

- unijugatus, with one pair of leaflets, as in a pinnate leaf; ‘with one yoke.’

- folia pinnata v. bipinnata foliolis pinnisve 1-oo-jugis, rarius simplicia v. 1-foliolata (B&H), the leaves pinnate or twice-pinnate with the leaflets or pinnae [in] 1-[indeterminate]-pairs, more rarely simple or 1-foliolate.

- foliis impari-pinnatis altérnis 1-4-jugis (F. Mueller), with the leaves unequal-pinnate, alternate, 1-4-paired.

- foliis impari-pinnatis bi-usque quadri-jugis (F. Mueller), with the leaves unequal-pinnate, bi- to quadri-jugate [i.e. 2-4-paired].

- 2-jugus, 2-jugatus or bijugatus, two-paired; bijugatus,-a,-um (adj.A), bijugus,-a,-um (adj.A), 2-jugus,-a,-um (adj.A): “double-yoked; two pairs joined” (Stearn 1996).

- 3-5-8-jugus, 3-5-8-jugatus, 3-5-8-jugate or -paired.

- 3-jugus, 3-jugatus or trijugatus, terjugatus, terjugus, trijugus, three-paired; “when the petiole of a pinnated leaf bears three pairs of leaflets” (Lindley).

- terjugus,-a,-um (adj.A): thrice bound together, threefold, triple;

- capitula terjuga, a three-headed capitulum, a triple capitulum

- terjugus, three-paired, with or in three pairs.

- 4-jugus, 4-jugatus or quadrijugatus, four-paired.

- quinquejugatus, arranged in five pairs.

- 10-jugus or decemjugus, with 10 pairs of leaflets;

- folia vulgo imparipinnata, trifoliolata, raro 2-juga vel simplicia, leaves commonly imparipinnate, trifoliolate, rarely 2-paired or simple.

- paucijugus, paucijugatus, with few pairs.

NOTE: in Palmae, trijugate: bearing three pairs of leaflets.

NOTE: (of mountains) quinquejugus,-a,-um (adj.A): having five summits, five-peaked; same as quinquevertex,-icis (adj.B) and quinticeps,-cipitis (adj.B).

ajugus,-a,-um (adj.A), ajugatus,-a,-um (adj.A): lacking a yoke;

- Ajuga,-ae (s.f.I), ‘not yoked;’ the calyx is not bilabiate (Lamiaceae).

Axonopus bijugus Chase; Berkheya multijuga (DC.) Roessler; Calea multijuga Krasch.; Gazania multijuga DC.; Saussurea paucijuga Y.Ling; Stobaea multijuga DC.; Trisetum altijugum Scribn. ‘tall-ridged, with or of tall ridges.’

Melicoccus bijugatus, the leaves are bijugate, that is, with leaves having two pairs of leaflets, i.e. the leaves have four leaflets.