Species within a genus

Africa, = Africa;
-anus, = belonging to, connected with, pertaining to, used to form adjectives from nouns, particularly from geographical and personal names.
africanus, = pertaining to Africa, African.
(from Africa)
(ld, BL)

arva, = an arable field, cornfield;
arvus, arvum, = that has been ploughed, but not yet sown, ploughed, arable; an arable field, cultivated land, a field, ploughed land, glebe;
-ensis, = indicates country or place of growth or origin or else habitat.
(growing in fields or cultivated land)
(pertaining to fields or cultivated lands; presumably relating to its weediness)
(Alien)
(ld, BL, An)