A very striking and decorative plant, both in form and color, from two to six feet tall, with a pale, branching, leafy stem, covered with close, white down, springing from a cluster of large rcot-leaves. The leaves are gray-green, covered with white down, and show great beauty of design, being sharply and symmetrically lobed and toothed, the margins armed with long yellow prickles. The flower-heads are an inch and a half long, with beautiful carmine and pale-pink flowers, all with no tinge of purple, the vivid spots of color giving a very brilliant effect in contrast with the pale foliage. This grows in the Grand Canyon and is conspicuous along the Berry trail, a little way below the rim.

Arizona Thistle. Carduus Arizonicus.

Arizona Thistle. Carduus Arizonicus.