Infrared foliage

Our national holiday, Waitangi Day. I spent it in the garden. It was a little warm, but quite manageable. Being nearer the coast we don't usually get quite as high temperatures as in the city. These succulents are growing in a garden down the hill from me. The flowers are spectacular, but as the plant is monocarpic, the rosette plant will die with the flower. I'm not sure what species it is, but am pretty sure that it is a Fucraea.