A Grammatical Dictionary of Botanical Latin

Comitatus,-us (s.m.IV), dat. sg. comitatui, abl. sg. comitatu, nom. & acc. pl. comitatus, gen. pl. comitatuum, dat. & abl. pl. comitatibus: combination, association; county; (eccles.) “company, escort; imperial court” (Stelten; an imperial escort or retinue; a company of soldiers; (Eng. historical) “a group of warriors or nobles accompanying a king or other leader (Wiktionary Dec. 2019) [> L. comitatus,-us (s.m.IV) “an escort, an attending multitude, a train, retinue (in sing. and plur.); (in the time of the empire) an imperial court, escort, retinue, court, suite; a company, band, troop, crowd, swarm (without the accessory idea of attendance)” (Lewis & Short)[> L. comes,-itis (s.m.III), q.v., companion];

[county, earldom, county court (Smithsonian]

- county, shire; in Comitatu Eboracensi, in Yorkshire; in plerisque Angliae Comitatibus, in most counties of England; in Comitatu Montis Gomerici Walliae, in the County of Montgomery in Wales (Stearn in Ray).

- in comitatu: in the county

- holotypus in comitatu Kaohsiung lectus, holotype collected in Kaohsiung county.

- Hab. prope montis Negro-Mountain dicti verticem in comitatu Ashe, Carolinae Septentionalis, it grows near the summit of the mountain called Negro-Mountain in Ashe County, North Carolina.

- [moss] Patria. Hibernia apud montem Knocka vohila prope Dunkerron in Comit. Kerriensi. (C. Muell), Native land. Ireland, at mount Knocka vohila near Dunkerron in County Kerry.

- in comitatu Nicaeensi, in Comte de Nice (Stearn 1983).

- holotypus in comitatu Kaohsiung lectus, holotype collected in Kaohsiung county.

- ... unde in piscinas suas in Comitatu Eboracensi detulit & multis annis, ut fructificandi modum observaret, aluit, sed incassum; tandem anates devoraverunt plantas (Dill.), ... whence he had them carried into his own fishpond in County York and he maintained them for many years, so that he may have observed the fruiting, but in vain; in the end the ducks had devoured the plants.

Surrejanus Comitatus: County Surrey, southern England.

Posse comitatus: be able to govern, to have the power of governance, the power or force of the county, “the authority under which a county sheriff, or other law officer, conscripts any able-bodied man to assist him in keeping the peace” (Wikipedia Jan2018). Posse Comitatus (Latin): “Power of the county. The whole force of the county: that is, all the male members of a county over fifteen, who may be summoned by a sheriff to assist in preventing a riot, the rescue of prisoners, or other unlawful disorders. Clergymen, peers, and the infirm are exempt.” Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894

The title of the act comes from the legal concept of posse comitatus, the authority under which a county sheriff, or other law officer, conscripts any able-bodied man to assist him in keeping the peace.