Growth Morphologies

Slant Morphology

Filiform, Spreading Edge, or Friable

Filiform

even growth across slant surface without spreading

Spreading Edge

even growth and away from inoculate line

Friable

crusty, raised texture

Broth Morphologies

Turbitiy, Flocculent, Pellicle, or Sediment

Turbidity

evenly dispersed cloudiness throughout the liquid

Flocculent

clumpy cloudiness throughout the liquid

Pellicle

growth only on the surface of the liquid

Sediment

growth the stays at the bottom of the liquid, does not evenly disperse when shaken

Bacterial Colony Growth Morphologies

shape, margin, surface, texture, elevation, color, and opaque or translucent

Shape

round, irregular, or punctiform (tiny pinpoints)

Margin

entire (smooth no irregularities), undulate (wavy), or filamentous/rhizoid (branching)

Surface

smooth, rough, or wrinkled

Texture

moist/shiny, mucoid, butyrous , dry/dusty, or dull

Elevation

convex/raised, flat, or umbonate (raised only in center)

Color

cream, pink, etc

Opaque

can't see through

Translucent

see through

undulate

butyrous or moist

sediment

friable

umbonate

wrinkled

flocculent

On left.

Turbidity

2nd pic, on left, middle one

Flocculent

Shape

punctiform

Shape + Margin of A (orange)

round and undulate

Shape + Margin of B (orange)

irregular and undulate

Difference btwn punctiform & round is…

size. Puntiform is small pinpoint while round is large circles