Usually circular or oval, areoles are found along the stems of the plant. This areole is the structure from which spines grow, flowers will bud and new stems will branch. Tree like in form, usually with a distinct trunk at the base of the plant. Club shaped with a narrow base and swelling towards the top. Fine hair like spines common in the areoles of many cacti.
Glochids break away very easily and quickly become embedded in skin or clothing.
Covered with fine soft short hairs. Turned backwards, bent or folding back. A plant that stores water in fleashy leaves or stems. A large root or underground stem that is used to store wayer and nutients for the plant. A raised protruberance on the stem of the plant, usually surrounding each areole .