No marginal teeth on the slender leaves, but Agave stricta doesn't need them--that terminal spine is plenty wicked. Agave stricta is the rare Agave that reblooms--sort of. The apical bud will bloom, but axillary buds will grow and create new rosettes branching off the original. Eventually the plant will look like a pile of spiky globes.
Very similar is Agave striata. Stricta has leaves with a tendency to arch or curl a bit. Well, sometimes. Striata has straight leaves. Well...sometimes. The surest way to identification is via the flowers. Striata is one plant I keep my distance from. Those spines are not particularly large or nasty looking, but they are as sharp as razors. Stay away! I don't usually pay a lot of attention to this Agave, but newly emerging foliage yesterday morning had a pale appearance that contrasted with the older foliage. It photographed well, I thought.