Search in gallery Cross-section through the edge of a leaf of Yucca brevifolia - Large (111 Kb) - Scroll down   to information With labels   English name: Joshua tree Scientific name: Yucca brevifolia Familia: Agavaceae Classis: Monocotyledonas Phylum: Angiospermae Regnum: Plantae

http://www.vcbio.science.ru.nl/en/image-gallery/show/PL0143/print/