Search results
Results From The WOW.Com Content Network
Asplenium bulbiferum, known as mother spleenwort, is a fern species native to New Zealand only. It is also called hen and chicken fern and, in the Māori language, pikopiko, mouku or mauku. Its fronds are eaten as a vegetable. It grows small bulbils on top of its fronds. Once grown to about 5 cm (2.0 in), these offspring fall off and, provided ...
Onoclea sensibilis, the sensitive fern, also known as the bead fern, is a coarse-textured, medium to large-sized deciduous perennial fern. The name comes from its sensitivity to frost, the fronds dying quickly when first touched by it. It is sometimes treated as the only species in Onoclea, [2] but some authors do not consider the genus ...
The gametes fuse, forming the diploid sporophyte, the 'fern' part of the life cycle. [8] [10] [11] Aglaomorpha also naturally exhibits apospory, the production of a gametophyte not from spores, but directly from the vegetative cells of the sporophytes. Their leaves can develop prothalli under dim light and sporophytic buds in strong light. [12]
Fern spores are borne in sporangia which are usually clustered to form sori. The sporangia may be covered with a protective coating called an indusium. The arrangement of the sporangia is important in classification. [6] In monomorphic ferns, the fertile and sterile leaves look morphologically the same, and both are able to photosynthesize.
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]
The name "walking fern" derives from the fact that new plantlets grow wherever the arching leaves of the parent touch the ground, creating a walking effect. Both have evergreen, undivided, slightly leathery leaves that are triangular and taper to a thin point. On the bottom of the leaves, sori, or spore-bearing structures, cluster along the veins.
The fertile leaves appear first; their green color slowly becomes brown as the season progresses and the spores are dropped. The spore-bearing stems persist after the sterile fronds are killed by frost, until the next season. The spores must develop within a few weeks or fail. The Osmundastrum cinnamomeum fern forms huge clonal colonies in ...
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 ...