Producing spores in sporangia that arise from several initial cells, characteristic of primitive ferns.

A type of vascular arrangement in stems where vascular bundles are organized in a ring around the pith.

The outer layer of a seed coat (testa).

The outer layer of a spore wall.

Having stamens attached to the tepals.

The second part of a scientific name (specific epithet) that identifies the species.

Growing on wood (as some fungi or plants).

Lacking a pruinose (frosted or waxy) coating, typically referring to stems, leaves, or fruits.

Having all sides or dimensions equal; in botany, often used to describe symmetrical leaves or floral parts.

Leaf arrangement where each leaf overlaps the next, with both margins of the leaf enclosing the stem.