Crocidium multicaule is a small annual, typically not exceeding in height when in flower. It grows from a low small patch of somewhat fleshy leaves at the ground and erects several tall thin stems, usually with reduced leaves on the lower part of the stem, and topped by a single flower head. The flowerhead is made up of five to 13 lemon yellow ray florets, each up to a centimeter long. The center of the head is filled with tiny disc florets, in a similar shade of brightyellow. The fruits are fuzzy brown achenes only one or two millimeters long which turn gluey when wet.