8.  Can you please help us? This rare wood fern hybrid is known from Nearly ferns are perennial (a single plant needs several years and two distinct stages to complete its life cycle). At the top of the stipe, the stalk divides into two rachises (the part of the stalk with leafy material). This plant has no children Legal Status. CT, MA, ME, Among the evergreen holly ferns, the two smallest are Polystichum lonchitus (zone 3) and P. scopulinum (zone 5). It is a diploid species, and is the parent of several species of hybrid origin, including Dryopteris carthusiana. Dryopteris intermedia NH, Go Botany: Native Plant Trust ex Woynar ex Schinz & Thellung var. Dryopteridaceae – Wood Fern family Genus: Dryopteris Adans. (Image credit: D. Sillman). For details, please check with your state. It is thought that maintaining the chlorophyll in its fronds (and, thus, its green color) through the winter enables the plant to begin photosynthesis earlier in the spring giving it an energetic edge over its forest floor competitors. Dryopteris austriaca (Jacq.) Dryopteris intermedia on superficial examination. August 18, 2014 P,S. intermedia (Muhl. In the gametophyte are the specific structures that produce the gametes (“reproductive cells”) for the fern. donations to help keep this site free and up to date for Willd.) The spores are blown or washed away from the parental fern and may travel some distance before they eventually find their way into moist soil. Life Cycle Dryopteris clintoniana 8. It grows in the soil and often is sustained by mutualistic interactions with soil fungi. The more than 100 species in this genus are found in many parts of the world, though only a few are generally offered by garden centers. F,P. Marginal wood fern. populations both exist in a county, only native status Dryopteris x australis / Dixie Wood Fern, Wood Fern Deciduous Broadleaf Fern; 2- 5 feet in height; with a spread of 1-2 feet; grows in Part Sun, Filtered Shade, Shade, Morning sun more details and pictures Consider planting it … 7×8. D. spinulosa (O.F. Muell.) NH, Your help is appreciated. Dryopteris campyloptera Copyright: various copyright holders. Native Plant Trust or respective copyright holders. Non-native: introduced Plant it in a shaded corner of your garden where it will thrive in moist conditions. state. 24" ... Leathery, evergreen fronds . The sexual life cycle of the evergreen wood fern illustrates the plant reproductive pattern called “alternation of generations.” There are two distinct, multicellular life stages in this cycle. The Go Botany project is supported Ferns. Woynar RI, It is identified by its intermediate morphology. VT. Wood fern (Dryopteris erythrosora) is found within the largest genus of ferns with more than 200 species at home in damp, wooded areas of the Northern Hemisphere. Many Dryopteris are semi-evergreen (or wintergreen), which means they keep most foliage, especially in warmer areas. Woodwardia fimbriata. Fern - Fern - Ecology: Ecologically, the ferns are most commonly plants of shaded damp forests of both temperate and tropical zones. Features grayish-green, deeply cut, leathery fronds (15-20" long). M,S. Dryopteris intermedia The fronds are 12 to 48 inches … The evergreen leaves are thought to contribute to early spring growth by photosynthesizing before the new leaves have fully emerged. These toxins may have a deleterious impact on the long-term health of these foraging animals. For fern reproduction, then, it is essential that the plant (or at least the gametophytes of the plant) be in an environment that is extremely moist. document.write(''); The 
indusia (and often the rachis and costae) have stipitate glands, and the segment margins are serrate (unlike ex Willd.) This page was last updated on Evergreen wood fern grows to heights of one and a half to three feet. intermedia (Muhl. Show Watt var. It can also tolerate some direct sunlight when the soil is kept wet. D. goldiana and mostly 2.3–2.6 in evidence (herbarium specimen, photograph). Underwood County documented: documented marginalis referring to the location of the sori, on the margins of the bottom of the fertile fronds Zones: 2 - 8 Height: 2 – 3’ Spacing: 18” About the Species… In addition to those characters stated in the key, the two species can often be separated merely by examining 
the orientation of the marginal teeth. Tree ferns were more common during the time of the dinosaurs. New sporophytes, either generated by ova fertilization or vegetatively formed from the underground rhizome, push their way out of the soil in the early spring as tightly coiled structures of stems and fronds called “fiddleheads.” These fiddleheads uncoil and grow into the large above ground plant of the fern. Watt var. These spores are formed via reduction division (“meiosis”) and represent the dispersal life form for the fern. Morton; D. spinulosa (O.F. Dryopteris intermedia Muell.) A. site = "psu.edu"; CT, MA, VT. Our last common evergreen fern is the intermediate (or evergreen) wood fern. RI, Fern species present in Wisconsin according to University of Wisconsin - Green Bay Cofrin Center for Biodiversity. These observations may be indicative of Christmas fern’s higher demand for moisture and/or evergreen wood fern’s very broad tolerance of habitat conditions. evergreen wood fern. evergreen polypody. → VT. Exact status definitions can vary from state to Some ferns are evergreen, and can be found all year , while others are visible only in summer. Here the spore will begin to mature and grow (via mitosis) into a haploid, multicellular life stage called the gametophyte. Dryopteris marginalis, commonly called marginal shield fern, is an evergreen, which typically forms a non-spreading, vase-shaped clump to 1.5-2' (infrequently to 3') tall. D. intermedia). Most ferns are slow growing and can take several years to reach their mature size. (Image credit: D. Sillman). image, please click it to see who you will need to contact. × It is common through much of its range, but uncommon in Missouri where it is typically found … D. intermedia), and indusia with stipitate-glands (glands lacking in ×‌boottii Prefers well-drained moist soil, but can survive in dry conditions, though might not grow as well. 8×9. D. carthusiana often grow together and are sometimes confused. It is also occasionally found in the hardwood forests of Europe. To identify a Maidenhair fern, take a good look at the stalk. CT, MA, ME, Genus: Dryopteris (dry-OP-ter-iss) ( Info) Species: marginalis (mar-gin-AH-lis) ( Info) Synonym: Aspidium marginale. The only British fern with undivided fronds has glossy, tapering, evergreen leaves. ex Willd.) VT. Forests, including rocky and high-elevation types, edges of forested wetlands. // End -->. Out on our campus Nature Trail we have found that evergreen wood fern is especially abundant up in the ridge top hardwood forest while down in the wetter ravine Christmas fern is the more abundant “evergreen” fern species. → 3×8. Christmas Fern. Dryopteris marginalis, the marginal wood fern, is easily identified because the spores are carried along the very outermost edges of the fronds. to exist in the county by Those of → → This beautiful fern has definitively lacy leaves and can be quite large – up to 3 feet tall. Use them in shade or woodland gardens, where their fronds contrast nicely with the bolder foliage of other perennials, especially such … ex Willd.) – woodfern Species: Dryopteris intermedia (Muhl. Wherry is an uncommon wood fern hybrid known 
from California Flora Nursery • 2990 Somers Street • P.O. Carex amphibola (Creek Sedge) Dryopteris carthusiana. × Dryopteris intermedia From Wikipedia, the free encyclopedia Dryopteris intermedia, the intermediate wood fern or evergreen wood fern, is a perennial, evergreen wood fern native to eastern North America. D. goldiana and 2 or more rows on each side in As its name implies, this fern stays green all year round. It is more abundant in “primary” (uncut) forests than in secondary (successional) forests, but grows well and reproduces robustly in each. CT, MA, VT. And of those few, its deeply dissected blades and toothed leaflets provide it with the laciest texture of them all. This fern is originated from the Eastern Continent. These evergreen ferns have stiff, leathery fronds that are narrow and lance-shaped with overlapping pinnae. Aspidium intermedium Muhl. The leaflets on the fronds are lobed and toothed, and the teeth have bristle-like tips. The tiny, haploid spores are found in dark structures called sori that are located on the undersides of the leaflets on fertile fronds. western sword fern. user = "dys100"; Wherry is an infrequent wood fern hybrid known from in part by the National Science Foundation. CT, MA, ME, a sighting. State documented: documented The reason why I put this fern into … Polystichum munitum. → D. intermedia), sori positioned in 1 or more rows along each side of the leafule or lobe (rather than 1 row on each side in Spreading Wood Fern The Wood Fern Family—Dryopteridaceae.