Maltese Cross Small 139×320 Medium 277×640 Large 444×1024 Download TIFF Original 1040×2400 | (823.6 KB) Description Maltese cross, Jerusalem cross, and scarlet lightning are the common names of lychnis chalcedonica. The flowers are usually brick red to scarlet. The flowers bloom in June. Keywords Jerusalem cross, lychnis, lychnis chalcedonica, Maltese cross, scarlet lightning Galleries Flowers and Shrubs: M Source: L. H. Bailey Standard Cyclopedia of Horticulture (New York, New York: The MacMillan Company, 1917)