A Grammatical Dictionary of Botanical Latin

Thalamium, 1. “’a hollow case containing spores in Algals’” 2. “’the disk or Lamina prolifera in Lichens;” 3. “’a form of the hymenium in Fungals”’ (Jackson, after Lindley); “an old term for the hymenium of lichens and certain other fungi (Acharius, 1810)” (S&D): thalamium,-ii (s.n.II), abl.sg. thalamio [> Gk. thalamus,-i (s.m.II), q.v.: sleeping room];

- [lichen] hymenium seu thecium contentum hypothecii indicat; thalamium thecasque complectitur et materia gummosa, lichenina, perfunditur, quam gelatinam hymeneam nominavi (Nyl.), the [sc. word] hymenium or thecium indicates the content of the hypothecium; it surrounds the thalamium and thecas and is soaked in a gummy material, licheninum, which I have called the hymenean gelatine.

Hypothecium, hypothece: “the cellular stratum below the thalamium of Lichenals” (Lindley); a layer of hyphal tissue immediately beneath the hymenium in certain Cryptogams (Jackson).

NOTE: a fungus genus Thallamnidium (Mucorales).