A Grammatical Dictionary of Botanical Latin

Foliolum,-i (s.n.II), abl. sg. foliolo, nom.& acc. pl. foliola, dat. & abl.pl. foliolis: leaflet; a foliole; “a leaflet. The secondary divisions of a compound leaf. In the annexed [sic] leaf there are many folioles” (Lindley); ‘i.e. (obsol.): the underleaves (amphigastria) in Hepaticae; see pinna,-ae (s.f.I), pinnule; the leaflet (foliolum) appears to have an obligate reference to a petiole, whereas the pinna may also be used of a subdivision of a leaf or leaflet without reference to the petiole; ??? see pinna (confused) to do

- folia pinnatisecta foliolis 2-4-jugatis, leaves pinnatisect with leaflets 2-4-paired.

- folia in foliola angusta divisa, leaves divided into narrow leaflets.

- foliolis in paria 6-9 dispositis, with leaflets arranged in pairs of 6-9.

- involucri foliolis bipartitis lobatisque, with the leaflets of the involucre two-parted and lobed.

- idem cum Rigiostachyde, foliolis pro foliis simplicibus descriptis (B&H), the same with Rigiostachys, with the leaflets described for simple leaves.

- folia 1-3-foliolata, foliolis integerrimis coriaceis (B&H), the leaves with 1-3 leaflets, with the leaflets very entire, leathery.