A Grammatical Dictionary of Botanical Latin

cornualis,-e (adj.B): of or pertaining to horns; see cornu,-us (s.n.IV), no. 5.

Cornualia,-ae (s.f.I): one of the Latin names for Cornwall.

Cornu–, a prefix used to indicate a relation to Cornwall, a great promontory, the south-west peninsula of Great Britain, southwestern England (Cornwall).

Cornwall: Cornubia,-ae (s.f.I); adj. cornubiensis,-e (adj.B) (Stearn); land of the Cornovii, an ancient tribe of Cornwall [Wikipedia, Cornovii, June 2019);

- frequens est in variis Angliae littoribus, v. gr. in Cornubia, Sussexia, in Insula Shepey & Anglesey (Dill.), it is frequent on the different coasts of England, for example in Cornwall, Sussex, on the Island Shepey and Anglesey.

- Loco Cockbush dicto, in Sussexia & prope Sheerness, in Insula Shepey, inque Mona observavi: ‘Buddlejur’ ex Cornubia habuit, cui dicitur (Dill.), I have observed it in the place called Cockbush, in Sussex and near Sheerness, on the Island Shepey, and on Mona: from Cornwall, it is regarded as “Bufflejur,’ by which it is named [i.e. called].

- Pensantiae Cornubiae in littore observata Rajo: mihi prope Bracklesham & Cockbush in Sussexia, item in Mona Insula visa (Dill.), observed by Ray on the coast of Pensantia, Cornwall: seen by me near Bracklesham and Cockbush in Susses, likewise on the Island of Mona .

“The name appears in the Anglo-Saxon Chronicle in 891 as On Corn walum. In the Domesday Book it was referred to as Cornualia and in c. 1198 as Cornwal. Other names for the county include a latinisation of the name as Cornubia (first appears in a mid-9th-century deed purporting to be a copy of one dating from c. 705), and as Cornugallia in 1086.” (Wikipedia, Cornwall, June 2019).