A Grammatical Dictionary of Botanical Latin

argillaceus,-a,-um (adj.A): clayey, growing on clay; of a clayey consistency or quality; clay-colored, (yellowish-brown);

- solum,-i (s.n.II) argillaceum, clay soil.

- cortex ( passim in Fago copiose obvia ) nonnumquam ex argillaceo griseus est, the cortex (everywhere on Fagus copiously encountered ) sometimes it is from clay-colored to gray.

- praeter caussas a cl. Schradero allegatas imprimis etiam var. nostra [beta beta], colore pulveris ab argillaceo nimis abludente, laete nimirum sulphureo - flavo, beyond the reasons mentioned by the distinguished Schrader, especially also our variety (beta beta], differs very much from the clayey color of the powder, certainly by the bright sulphur-yellow [color].

- lamellae e colore initiali praepulchro in dilute argillaceo - cinnamomeum cito transeunt, the lamellae from the initially very beautiful color quickly passes into a diluted clayey-cinnamon.

- Patria. In umbrosis argillaceis ad radices palmarum Jamaicae (Mueller), native place. in shady clay [places, sc. locis] on the roots of the palms of Jamaica.

- [fungi] colore pulveris ab argillaceo nimis abludente, laete nimirum sulphureo - flavo (S&A), with the color of the powder highly different from argillaceous [i.e. clay-colored or yellowish-brown], surely a bright sulphur-yellow.

Sphaeria argillacea, a fungus, ‘color modo cinereus, modo argillaceus; sed sordide rubiginosum , the color sometimes ashen, sometimes clay-colored; but also a dirty rusty-red..