An association of chloroplasts and mitochondria in Zea mays and Hyptis suaveolens

Mitochondria have been found in invaginations, most of which were very deep and were normally situated near the periphery of chloroplasts in the bundle sheath of Zea mays and in Hyptis suaveolens mesophyll. They were present only in plants grown under low light intensities (0.16 and