30, founded on one of Grand' Eury's restorations, gives an idea of the habit of a tree of the genus Dorycordaites, characterized by its lanceolate acute leaves; in the typical Cordaites they were of a blunter shape, while in Poacordaites they were narrow and grasslike.
The cathedral, a fine basilica, of the 12th (?) century, with columns and fantastic capitals of the period, originally flat-roofed and later vaulted, with 16th-century restorations, contains the tomb of Pope John XXI., and has a Gothic campanile in black and white stone.
Elaborate restorations have been undertaken, and the minor remains have been housed since 1904 in the reconstructed praetorium or headquarters.
Owing to frequent restorations occasioned by earthquakes, it now presents an incongruous mixture of different styles.
Giovanni in Toro, spoilt by restorations in the 18th century, contains a splendid pulpit in Cosmatesque work, supported on four pillars, and the crypt some 14th-century frescoes.