Both are finally distinguishable from the type by their longer stalks, which are more decidedly aphyllous, and by their later flowering.

A, at the beginning of words of Greek derivation, commonly signifies a negative, or the absence of something; as apetalous, without petals; aphyllous, leafless, &c.

In a ravine near our camp, I found a Cynoglossum and a curious Periploceous plant, in habit approaching to certain Aphyllous, true Asclepiads.