E. amethystinum, 2 ft., has the upper part of the stem, the bracts, and heads of flowers all of an amethystine blue.

In late spring the open fields about San Francisco take on a delicate, amethystine tinge, due to the blossoms of the blue-and-white lupine.

There were at least three species of scorpion in camp, and the native amethystine pythons were known to grow to 28 feet.