VERATRUM VIRIDE (Boericke's Materia Medica)
VESPA CRABRO (Boericke's Materia Medica)
X-RAY (Boericke's Materia Medica)
XEROPHYLLUM (Boericke's Materia Medica)
YUCCA FILAMENTOSA (Boericke's Materia Medica)