Powdery silver with a touch of blue, with brown-burgundy spines. Symmetrical and bold, without taking a huge amount of space.
These are all at the Huntington in San Marino. My own specimen, bought as A. ovatifolia, is looking more and more like a mislabeled A. parryi. A discussion of A. ovatifolia here.
My little probably-parryi, only about 8" wide up to now:
Possibly the similar but different A. parryi, also at the Huntington. Shorter and more squat than A. ovatifolia, but just as symmetrical:
Compare the edges of A. ovatifolia with A. marmorata:
So far my taller-than-wide A. marmorata does not have the symmetry of either A. ovatifolia or A. parryi. I mainly wanted A. ovatifolia for its' New And Cool factor, but comparing it to A. marmorata and A. parryi, I think it is the most beautiful of the three.