A many-stemmed annual weed. Flowers many, along upper part of stems and their branches, minute, with 4 white, rounded petals. Blooms March–November. Basal leaves form a rosette and are deeply lobed, similar to dandelion but much smaller, to 4 inches long; stem leaves small, lance-shaped. Fruit 2-lobed, heart-shaped or triangular, formed lower on the stem while flowering continues above. You would have to look hard to find a sheep herder who uses a triangular bag shaped like the fruit of this plant, but the name goes back to such medieval fashions.