This is about a foot tall, with smooth, hollow flower-stems, smooth leaves, and rather small yellow flowers, not particularly pretty. The " gone-to-seed " flower-heads are, however, very conspicuous, for they are nearly an inch and a half across, and each seed is tipped by a little silvery paper star, the effect before the wind carries them away being exceedingly pretty, a good deal like a Dandelion puff. This grows in the Grand Canyon on the plateau.

There are many kinds of Sonchus, natives of the Old World.

Sow Thistle  Sonchus oleraceus. Silver puffs Microseris linearfolia

Sow Thistle -Sonchus oleraceus. Silver-puffs-Microseris linearfolia. CHICORY FAMILY. Cicoriaceae.