Left: Picture of the shoot of Psilotum. Note the dichotomous branching and the tri-lobed sporangia supported by specialized bifurcate leaves (sporophylls). Right: Diagram of underground stem (rhizome) with unicellular rhizoids.
Characteristics:
1. Underground rhizome
2. Unicellular rhizoids
3. Erect stems dichotomize into the main photosynthetic organ
Left: Picture of the shoot of Psilotum. Note the dichotomous branching and the tri-lobed sporangia supported by specialized bifurcate leaves (sporophylls). Right: Diagram of underground stem (rhizome) with unicellular rhizoids.
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