Scanning electron microscope studies of the spines and glochids of the Opuntioideae (Cactaceae)

Robinson H., Scanning electron microscope studies of the spines and glochids of the Opuntioideae (Cactaceae), American Journal of Botany, 1974, 61(3):278-283, doi: 10.1002/j.1537-2197.1974.tb10775.x

The paper presents glochid microscopic structure. It compares shaft surfaces, barbs and bases and discusses their significance in the systematics of the time.