This plant is also found in Antigua.
Agave angustifola and Agave vivipara are often used interchangeably, though most authors maintain them as distinct species with non-overlapping native distributions (García-Mendoza and Fernando Chiang 2003).
A. angustifolia has narrow, stiffly erect leaves with moderately-spaced spines, producing capsules, not bulibiferous; whereas A. vivipara is described as having shorter, recurved leaves with short-spaced spines and bulbiferous.
A. vivipara is likely similar to A. karatto. The A. vivipara of Miller (1768) and Smith et al. (2008) seem different, of a much smaller habit and narrower leaves, from the A. vivipara of Trelease (1913) and García-Mendoza and Fernando Chiang (2003), of a much larger habit.