Parts of a fern leaf. The midrib is the main axis of the blade, and the tip of the frond is its apex. The blade may be variously divided, into segments called pinnae; single leaflets are pinna. Pinna may be further divided, the smallest segments are pinnules.

The fern body consists of 3 major parts – the rhizome, the fronds and the sporangia. Find out more about the sporangia in this related interactive. Ferns come in a variety of shapes and sizes and this interactive explores the diversity of form in New Zealand ferns.

2010年9月24日 · For more in-depth coverage of fern structure, visit the Fern structure and Underlay of a fern interactives. Dr Patrick Brownsey from Te Papa shows us the 3 major parts of a fern: the rhizome (the underground stem), the leafy …

Leaflets or Pinnae: These are the parts of the frond that are fully divided from the stalk of the frond. Some but not all fern fronds are divided into pinnae. Further divisions in the frond are called pinnules, where the leaflets are further divided into smaller leaves that are connected to the branched stem of the pinna.

The parts of the fern are a required vocabulary for making effective use of this site. Axes At left are two fronds, one 3 times divided, the other simple. This site assumes knowledge of most of the terms illustrated; learning them all is encouraged.

Cluster of small spore-producing structures covering the underside of a pinna. Main part of the frond, rich in chlorophyll. Roots that grow out of the rhizome, enabling the fern to anchor itself to the soil and absorb water and mineral salts from it.

A typical fern structure is illustrated to aid in the understanding of morphology and fern leaf architecture description (Fig. 1). Measurements were determined using a ruler, protractor and ...

Parts of a Fern From: Ferns of the Coastal Plain: Their Lore, Legends and Uses, by Lin Dunbar.

Fern sporophytes are composed of megaphylls, often pinnately compound fronds that emerging as fiddleheads in the spring. Sporangia are produced in clusters called sori (sorus, singular) on the fronds. Figure \(\PageIndex{6}\): Anatomy of a fern. The fern frond (D) is emerging from an underground, horizontal stem called a rhizome (C).

The correct botanical names of the parts of ferns. The arrangement of rhizomes and sori in different species of ferns.