Protopityales †

Ecology & Form

• • Erect shrubs or trees with stems greater than 50 cm in diameter

Stem

• • Endarch maturation

  • Bifacial cambium

  • Wood is composed of tracheids with circular bordered pits.

Leaves

• • Unknown

Roots

• • Diarch (having 2 xylem strands)

  • Roots lack secondary xylem

Reproduction

• • Spores: 75-355 um

  • Maybe hetersporous due to large range in sizes