Pteridaceae, the maidenhair fern family (order Polypodiales), containing about 50 genera and approximately 950 species. Members of Pteridaceae are distributed throughout the world, especially in tropical and warm-temperate regions.

Pteridaceae is a family of ferns characterized by small, delicate fronds and intricate leaf patterns. These plants are commonly found in tropical and subtropical regions around the world.

The Pteridaceae consist of terrestrial, epipetric, or epiphytic plants, rarely floating aquatics (Ceratopteris spp.). The stems are rhizomatous, the rhizomes creeping to erect, bearing scales or hairs. The leaves are simple, pinnate, pedate, or decompound, veins free or anastomosing.

2017年11月11日 · The Pteridaceae, in the order of Polypodiales, is a family of fern, consisting of around 45 genera with approximately 1150 species, subcosmopolitan, mostly distributed in tropics and arid regions. Plants are mostly terrestrial or epilithic or epipetric or epiphytic.

As represented in North America, Pteridaceae comprise three major evolutionary lines (the adiantoids, the pteroids, and the cheilanthoids). Characteristics holding the family together include abaxial (usually submarginal) sori that lack indusia or are protected by a reflexed or revolute leaf margin, spores that are usually globose-tetrahedral ...

Pteridaceae are one of the largest fern families, comprising over 1000 species (~10% of extant ferns). But even more notable than their species richness is the remarkable morphological and ecological diversity of the family, which includes obligate epiphytes, free-floating aquatics, brackish-swamp dwellers, several clades specialized for ...

Species in the Pteridaceae are ferns, sometimes small, growing on soil or on rock. The leaf blades and leaf stalks are quite varied in this family; some species have unusual umbrella- or funnel-shaped leaves.

Pteridaceae E.D.M. Kirchner. Common name: Maidenhair Fern Family. Key to Pteridaceae. A family of about 53 genera and about 1211 species. Here circumscribed to include Vittariaceae (see PPG 2016; Smith et al. 2006b).

2017年4月1日 · As the second most genera-rich fern family, Pteridaceae contain more than 1000 species contributing to ca. 10% of extant leptosporangiate fern diversity. The subfamily Pteridoideae is one of the five subfamilies often recognized.

2025年1月20日 · Familia: Pteridaceae Subfamiliae: Cheilanthoideae – Cryptogrammoideae – Parkerioideae – Pteridoideae – Vittarioideae