Ad
related to: examples of ferns with sori
Search results
Results From The WOW.Com Content Network
In ferns, the sori form a yellowish or brownish mass on the edge or underside of a fertile frond. In some species, they are protected during development by a scale or film of tissue called the indusium ( pl. : indusia ), which forms an umbrella-like cover.
Sori of Asplenium trichomanes, showing linear arrangement with a thin membranous indusium along one edge Asplenium nidus in habitat: an epiphyte with undivided leaves Members of the family grow from rhizomes , that are either creeping or somewhat erect, and are usually but not always unbranched, and have scales that usually have a lattice-like ...
The ferns historically considered as Adiantum include both petrophilic and terrestrial plants. The vittarioid ferns are primarily epiphytic in tropical regions and all have simple leaves with sori that follow the veins and lack true indusia ; the sori are most often marginal with a false indusium formed from the reflexed leaf margin.
Dryopteris marginalis showing unripe sori placement on the edges of the leaves. Dryopteris marginalis is an evergreen fern throughout its range, along with Christmas fern (Polystichum acrostichoides) it is one of the few evergreen ferns. Marginal wood fern grows from a clump with a prominent central rootstock, this rootstock may be exposed and ...
Polypodium glycyrrhiza, commonly known as licorice fern, many-footed fern, and sweet root, is a summer deciduous fern native to northwestern North America, where it is found in shaded, damp locations. Spores are located in rounded sori on the undersides of the fronds, and are released in cool weather and high humidity. [1]
Linnaeus first gave the walking fern the binomial Asplenium rhizophyllum in his Species Plantarum of 1753. [12] In 1833, J.H.F. Link placed the species in a segregate genus, Camptosorus, because of the irregular arrangement of its sori (in contrast to the rest of Asplenium, where the sori are confined to the edge of veins). [13]
The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers.They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients, and in having life cycles in which the branched sporophyte is the dominant phase.
The name walking fern was derived from the way the fern spreads. The underside of each leaf contain sori, and when the tip of the leaf touches the ground, new planlets sprout, creating a "walking" effect. The evergreen, undivided, slightly leathery leaves are triangular and taper to a thin point. Sori, the spore-bearing structures, are ...