Phalansterium solitarium Sandon 1924, a common soil flagellate, was isolated and a

Sandon 1924, a common soil flagellate, was isolated and a

clonal culture was examined using light and electron microscopy. The first preliminary

observations of its ultrastructure show that the cells of Ph. solitarium have the same

main characters as an earlier investigated species of the genus, Ph. digitatum Stein 1878,

including a collarlike structure surrounding the basis of the single emerging flagellum,

tubular cristae, a single basal body, surrounded by x, y and z zones with radiating

microtubules and a fibrillar rootlet associated with the dictyosome. In contrast to Ph.

digitatum, no spherules were seen either inside or outside the cell of Ph. solitarium.

no spherules were seen either inside or outside the cell of . .