Endoflagella is a feature of spirochetes which arises from periplasmic space. They have rotatory type of motility. Treponema Barrelia Leptospira Size 6-14 um x 0.2 um 10-30 um x 0.2-0.5um 6-20 um x 0.1 um Spirals (In number) 6-12 3-10 Numerous and tightly coiled with hooked ends Wavelength 1 um 3 um 0.5 um Amplitude of spiral 1-1.5 um Up to 2 um 0.1 um Endoflagella at each pole 3-4 7-11 1 Staining Do not take up ordinary stains, can be stained only bu silver impregnation stains, except Bornelia which is poorly Gram-stained.