A Grammatical Dictionary of Botanical Latin

Acinus,-i (s.m.II), abl. sg. acino, and acinum,-i (s.n.II), abl. sg. acino, particularly in the plur. acina,-orum, [classically] a berry, esp. the grape, also hederae [of Ivy], sambucique [of Sambucus], ligustri [of Ligustrum]; the stone of a berry (Lewis & Short); “chiefly ambiguous; neuter declension certain in Cato, etc.; a grape or other berry; apparently also a pip or seed” (Glare); Jackson’s Latin for acinus = “a grape-seed.” Acinus: “a bunch of fleshy fruits: as of currants or grapes. Now confined to the berries of such bunches” (Lindley). ‘Acine, Acinus’ = “a single member of such fruits, as the raspberry; a drupel, druplet; formerly used for a bunch of fruit, as of grapes” (Jackson); see berry.

NOTE: in the Lewis & Short entry two additional plants have acini: Cissanthemos,-I (s.f.II) = Gk. kissanthemos, “a plant similar to ivy, a species of cyclaminos (Pliny)” (Lewis & Short); note feminine gender.

Strychnos,-i (s.m.II) = Gk. strychnos, “a kind of nightshade, called also trychnos,-i (s.m.II)” (Lewis & Short).

NOTE: not related to achene (Eng.noun), q.v.

- [Vitis vinifera] acinis rubris pallidis aut albis, aquosis aut carnosis, globosis ovatis ant oblongis, saccharatis moschatis aut subacerbis (DeCandolle), with the berries [or berry-bunches] red, pale or white, watery [i.e. full of water, juicy] or fleshy, globose, ovate or oblong, sugary, musky or somewhat sour.

Apparently in Ray’s day:

- [term] Acinus non pro uvae vinaceo apud idoneos autores, sed pro uva ipsa seu fructu toto accipitur, qui ex succo, & parte quae veluti caro est, & ex vinaceis, & ex ambiente cute seu folliculo constat. Angl. A Grape, not a Grapestone. acinaceus,-a,-um (adj.A): full of kernels (Jackson) [> L. acinus, q.v., a grape-seed (Jackson)].

Acinodendrus (dendron) “a plant whose fruit is in bunches” (Jackson).