A Grammatical Dictionary of Botanical Latin

Sacellum,-i (s.n.II), abl.sg. sacello: “chapel, little sanctuary” (Stelten); “a little sanctuary, i.e. a small uncovered place consecrated to a divinity; a chapel” (Lewis & Short) [> L. sacrum,-i (s.n.II), a temple];

“In ancient Roman religion, a sacellum is a small shrine. The word is a diminutive from sacer ("belonging to a god").[1] The numerous sacella of ancient Rome included both shrines maintained on private properties by families, and public shrines. A sacellum might be square or round (Wikipedia Feb. 2019);

NOTE: not saccellus,-i (s.m.II), abl.sg. saccello [with two ‘c’s] (dim. saccus = sacculus): a little bag, sack or purse.

- sacellum est locus parvus deo sacratus cum ara, a sacellum is a small place sacred to a god with an altar.

- [Laurentia] in Ilva insula prope Sacellum Deiparae Virginis Mariae, vulgo la Madonna delle Grazie, per saxorum rimas, locis plerumque humectis (Mich.), on the island of Ilva near the sanctuary of the Virgin Mary, Mother of God, in the common tongue ‘la Madonna delle Grazie,’ along the cracks of the rocks, in places usually damp.

- [Lichen Pulmonarius] per Plebianam Imprunetae variis in locis, & signanter in querceto juxta Divi Stephani Sacellum, vulgo ‘il Romitorio di Bifonica’ (Mich.), throughout the Plebiana Impruneta in various places, and clearly in the grove of Castanea of the shrine of Saint Stephan, commonly [sc. called] “il Romitorio di Bifonica.’