Asteroxylon mackiei: star-shaped xylem

Xylem of  Asteroxylon Xylem of a young plant

The star-shaped xylem. The black line is an offshoot from the xylem
leading to a leaf. Diameter of the 'star' is 2 mm.

Xylem of a young plant.

Stem with xylem and stomata

Xylem of Asteroxylon

Section of a stem with stellate xylem.
On the left hand side two stomata (very small!).

The ' star' shaped xylem.

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