A Grammatical Dictionary of Botanical Latin

Pruina,-ae (s.f.I), abl.sg. pruina: lit. 'hoar-frost, rime;' the bloom, or waxy powdery secretion on the surface; a coarse granular secretion found on the surface of some plants” (Lindley); a covering or secretion of powdery or waxy pruinose material causing a whitish (glaucous) or bluish overcast on the surface of certain leaves and fruits; “a whitish powdery and glaucous covering of the surface, often of a waxy nature” (Fernald 1950) [> L. pruina,-ae (s.f.I), hoar-frost]; syn. gelum,-i (s.n.II), q.v., ‘frost,’ abl. sg. gelo; see frost; see pulvis,-eris (s.m.III), ‘powder;’ see powder;

Pruina seminalis (adj.B), abl. sg. pruina seminali: “the spores of certain Fungals” (Lindley)” (Jackson).

- [fungi] Puccinia ramosa, bifurcata, omnium minima, candidisiima, pruinam referens (Mich.), a branched, bifurcate Puccinia, smallest of all [Puccinia species], totally shining white, resembling (hoar)frost.

- foliis pruinæ inftar candicantibus (Dill.), with leaves shining white like (hoar)frost.

- foliis pruina densa glauca differt, it differs by the leaves with a dense, glaucous bloom.

- [fungus] aetate juniore pruina quadam caesio - cinerea, in adultis evanida, totus obductus, at a younger age, the whole covered with a certain glaucous-blue-gray powder, gone in the adults.

- stipes in [alpha], pruina alba tectus, stipe in [variety a] covered with a white bloom.

- colore aurantiae, sed pruina amoene rosea demum nonnumquam evanescente obtectae, with the color of orange, but sometimes covered with a lovely rosey eventually evanescent pruina.

- pori in vetustioribus subferruginei, pruina, argenteo - cinerea tenui detersili vestiti, the pores in older [sc. specimens] somewhat rusty, clothed with a pruina silvery-gray, delicate, removeable.

- pori satis parvi, pruina nitidiuscula grisea subdetersili demum evanescente obtecti, the pores quite small, covered with a somewhat shining, gray, somewhat removable eventually evanescent pruina.

- glauca, pruina tomentosa albida tecta, glaucous, covered with a tomentose, whitish pruina.

- vigens fungus ex albo subglaucescit , pruina saepe ( an seminali? Tremellis solenni) cinerascente tectus, the living fungus growing somewhat glaucous from white, often covered with a grayish pruina (or rather seminal? [i.e. of spores] of Tremell... solennus).

- [fungi] discus veluti per papillarum rudimenta colliculosus vel undulatus, pruina tenui cinerea dense constratus est (S&A), the disc is colliculate or undulate as if by rudimentary papillae, densely overspread with a thin, ash-white pruina [i.e. a waxy, powdery secretion].