A Grammatical Dictionary of Botanical Latin

stom-; stomo-; -stom-; -stoma,-atis (s.n.III), abl. sg. -stomate; -stomium,-ii (s.n.II), abl. sg. -stomio [dim. of -stoma or -stomum]; -stomum,-i (s.n.II), abl. sg. -stomo [> Gk. stoma,-atos (s.n.III), the mouth, in Latin, os, gen.sg. oris (s.n.III); also, the mouth of a river, Latin ostia,-ae (s.f.I), an opening; an outlet or entrance];

Distomanthera,'genus imperfecte descriptum, staminibus 15 antheris poris dehiscentibus,’ (B&H), Distomanthera, a genus imperfectly described, with stamens 15, dehiscent by pores; Amblostoma,-atis (s.n.III); Cleisostoma,-atis (s.n.III); Myostoma,-atis (s.n.III); Pachystoma,-atis (s.n.III).

Adenostoma,-atis (s.n.III); Blepharostoma,-atis (s.n.III); Solenostoma,-atis (s.n.III).

Astomum,-i (s.n.II), a genus of acrocarpous mosses with an indehiscent capsule mouth; Comostomum,-i (s.n.II), abl. sg. Comostomo, a moss with a cone-shaped structure at the capsule mouth; Gymnostomum, ‘naked mouth,’ a genus of mosses in allusion to the absence of any peristome at the capsule mouth; Ptychostomum, a genus of mosses, in allusion to a pleated mouth, stoma or pore.

Conostomum,-i (s.n.II): From konos, a cone, and stoma, a mouth ; the teeth of the theca are united. A curious species of moss, found during summer on some of the Scotch mountains. Synonyme: Grimmia conostoma (Paxton).

Prostome, q.v., (in bryophytes) a structure associated with the peristome: preperistome: prostomium,-ii(s.n.II), abl.sg. prostomio; also prostoma,-atis (s.n.III), abl.sg. prostomate; also preperistomium,-ii (s.n.II), abl.sg. prestomio and preperistoma,-atis (s.n.III).

NOTE: many structures associated with the mouth of a moss capsule are derived from ‘stoma:’ such as the peristome; generic names are often based on the morphology of structures on the capsule mouth.