Psilotum complanatum: Whisk Fern

Psilotum complanatum, the Whisk Fern, Moa, or Flat Whisk Fern, is a primitive, vascular plant (not a true fern but a fern ally) native to tropical and subtropical regions worldwide. It has no true roots or leaves; instead, it has green, photosynthetic, flattened, branching stems (3-angled) with small, scale-like appendages (enations). The sporangia are fused into synangia on the stems. It is epiphytic or terrestrial.

Plant Profile

Whisk Fern grows in humid, shaded to semi-shaded conditions, epiphytically on trees or terrestrially in well-drained, organic-rich soil. It is a living fossil, representing an ancient lineage. In cultivation, it is a curiosity for botanical collections. It requires warmth and humidity. The flattened, whisk-like stems are unique. A conversation piece for the plant evolution enthusiast.