A Grammatical Dictionary of Botanical Latin

acerosus,-a,-um (adj.A): acerose, acicular, acerate, acerous, needle-shaped and stiff; like a pine needle, as in Pinus leaves; “needle-shaped. The leaves of Heaths [Erica] and Pine trees” (Lindley); “fine and slender, with a sharp point” (Paxton) [> L. acus, gen. sg. acus (s.f.IV): a needle or pin, an object pointed at the end]; an ‘arbor acerosa’ is a needle-leaved [i.e. evergreen ]tree, opp. arbor frondosa, a frondose, leaf-bearing or deciduous tree;

NOTE: also acerosus,-a,-um (adj.A): full of, or mixed with chaff (Lewis & Short).

- foliis acerosis, with needle-shaped leaves.

- plantae gregariae in foliis acerosis Piceae ad humum ex materia organica putrida compositum habitantes, plants gregarious growing on needle leaves of Picea on humus composed of rotten organic material.

- crescit in umbrosis frondosis, vel acerosis utraque non infrequens (S&A), it grows in leafy shade, or not infrequent in acerose [shade of evergreens].

- in sylvis acerosis vulgares: in dumetis frondosis semel lecta; in abiegnis, haud rara (S&A), common in needle-leaved forests; once collected in deciduous thorn-thickets; on fir-wood it is not rare,.

- fungus terrestris et corticalis copose obvenit in sylvis acerosis, a fungus terrestrial and cortical often encountered in piney forests.

- altera acicolas, in foliis, ramulis, corticibus arborum acerosarum resinosis parasiticas (S&A), the others parasitic, dweller on [needle-leaves] on resinous leaves, twigs, bark of acerose [i.e. evergreen] trees.

- [Mycaena lactea var. pitya]: Crescit sylvis acerosis vel epigaea vel ramulis acubusve pineis innata passim frequens (S&A), it grows far and wide, frequent, springing up in evergreen [i.e. full of needle (leaves)] forests or on the ground or on branchlets or pine-needles.