Transcript Spirochaetales ~~~~~~~~~~~~~~~~~~ Treponema Borrelia & Leptospira Taxonomy Order: Spirochaetales Family: Spirochaetaceae Genus: Treponema Borrelia Family: Leptospiraceae Genus: Leptospira General Overview of Spirochaetales  Gram-negative spirochetes • Spirochete from Greek for “coiled hair” Extremely.