Peharec, P Spine micromorphology of normal and hyperhydric Mammillaria gracilis Pfeiff. (Cactaceae) shoots. [electronic resource] - Journal of microscopy Jul 2010 - 78-86 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1365-2818 Standard No.: 10.1111/j.1365-2818.2009.03358.x doi Subjects--Topical Terms: Cactaceae--anatomy & histologyMicroscopyMicroscopy, Electron, ScanningPlant Shoots--anatomy & histology