polytrichum commune description

The seta, or capsule stalk, is 5 to 9 cm long, and is stout and yellowish to reddish brown in colour. Description; Milieu; Répartition; Synonymes; Non renseignée pour le moment Non renseigné pour le moment Non renseignée pour le moment Aucun synonyme pour ce taxon Observations par classes d'altitudes. Overgrown moss , Polytrichum commune. Une photo de : Mousses acrocarpes (+ de photos) Recommander ou envoyer cette photo : Photo précédente : Petit milieu naturel avec la sphaigne. Capsule 3-6 mm, short-rectangular to cubic, brown to dark reddish brown, glaucous when fresh, sharply 4-alate, inclined to horizontal; peristome 250 µm, divided to 0.6, the teeth 64, pale. The species can be exceptionally tall for a moss with stems often exceeding 30 cm (12 in) though rarely reaching 70 cm (27.5 in), but it is most commonly found at shorter lengths of 5 to 10 cm (2 to 4 in). Leaves appressed when dry, distinctly squarrose when moist, 6.1-10.2 mm long; lamina 0.5-0.8 mm wide, abaxial cells with distinctly incrassate outer walls; margin serrate with large sharp unicellular teeth, tightly upcurved, unistratose, 4-8 cells wide; sheathing base gradually widened; costa excurrent, with apical abaxial teeth; lamellae 34-52, on adaxial surface of blade, 5-10 cells high, ± straight to slightly crenate by upper margin, with apical cells retuse in cross-section and with an incrassate outer wall. 2/4/17 – Polytrichum commune – wiry green stems with long stiff leaves, also brown old ones. Plants large, in tufts. Polytrichum commune at Kitty Todd State Nature Preserve in Lucas County, Ohio. var. The main plant body is gametophyte. Polytrichum commune (and the genus) is characterized by photosynthetic, vertical lamellae on the upper leaf surface which is a xeromorphic adaptation to dry conditions. The stems can occur in either loose or quite dense tufts, often forming extensive colonies. It is dark green in colour, but becomes brownish with age. It is the most widely distributed species of the genus, found in many regions with high … in Flora of North America @ efloras.org" eFlora. Téléchargez dès aujourd'hui la photo Polytrichum Commune. These blades have toothed margins, are denticulate to subentire in outline, roughened to almost smooth, and have a costa that is excurrent. A Project of the World Flora Online Consortium. Date: 11 April 2015: Source: Own work: Author: HermannSchachner : Aufnahmeort: St.Oswald, Waldviertel, Niederösterreich, Austria Camera location: 48° 17′ 27″ N, 15° 01′ 20″ E View this and other nearby images on: OpenStreetMap - Google Earth: Licensing . Download this Moss Life Cycle Diagram Of Life Cycle Of Common Haircap Moss With Titles vector illustration now. The stems can occur in either loose or quite dense tufts, often forming extensive colonies. The stems are most typically found at lengths of 5 to 10 cm, but can be as short as 2 cm or as long as 70 cm. It is sharply 4 winged, inclined to horizontal, and glaucous when fresh. Polytrichum definition is - a large genus (the type of the family Polytrichaceae) of mosses chiefly of temperate and arctic regions. Common Hair Cap. Donations are tax-deductible as … Source for information on Polytrichum… They are very common in cool temperature and tropical regions. Accessed February 2018. They range in stiffness from erect to decumbent (i.e. with a rounded apex with a central shallow notch) to deeply notched, and in rare cases are divided by a vertical partition. 2/4/17 – Polytrichum commune – wiry green stems with long stiff leaves, also brown old ones. Stems to 18 cm tall. Two varieties (var. Long | Polytrichum commune var. Files are available under licenses specified on their description page. Seta 5-9 cm, stout, yellowish to reddish brown. Polytrichum commune usually has rather distant leaves with glossy sheathing parts covering the stem. The leaves occur densely to rather distantly, and bracts are present proximally. The sheath cells measure 60 to 90 µm long by 10 to 13 µm wide. Description: Polytrichum commune is one of the tallest mosses and definitely has the tallest sporophytes, Haircap Moss provides erosion control solutions holding the soil tightly in place.Plants are a deep green with dramatic changes in appearance based upon moisture content. var. Two varieties (var. Description. Trouvez les Polytric Commun images et les photos d’actualités parfaites sur Getty Images. Hair-cap moss, also called pigeon wheat, any of the plants of the genus Polytrichum (subclass Bryidae) with 39–100 species; it often forms large mats in peat bogs, old fields, and areas with high soil acidity. Occurs in Qld, N.S.W., A.C.T., Vic. - Buy this stock photo and explore similar images at Adobe Stock uliginosum Wallr. Home . Like other species in the Polytrichaceae, Polytrichum strictum has leaves with a single costa, vertical lamellae, a water-repelling cuticle, and rhizoids that appear to facilitate external water movement in addition to anchoring the plant. Polytrichum Polytric ... habitat : lieux humides à marécageux et bois humides acidiclines Description : mousses dioïques à tiges non ramifiées; feuilles vertes munies d'une gaine basale translucide embrassante et d'un limbe globalement horizontal; capsules en forme d'urne quadrangulaire à opercule; Statut : communes à très rares. Haircap Moss (Polytrichaceae) Description:This moss is an evergreen perennial plant up to 1½' tall (rarelytaller); the stems of individual plants are erect to sprawling. Haircap moss, common haircap moss. (Polytrichum Commune) Interesting Information: This is one of the most common plants found around the world. Polytrichum commune is a medium to large moss. Polytrichum strictum Scientific classification Kingdom: Plantae Division: Bryophyta Class: Polytrichopsida Order: Polytrichales Family: Polytrichaceae Genus: Polytrichum Species: P. strictum Binomial name Polytrichum strictum Bridel, J. Bot. var. It is dark green in colour, but becomes brownish with age. Our results thus indicate that the control site can be considered relatively free from industrial influence. ex Hedw. perigoniale (Michx.) [3], Polytrichum commune is an endohydric moss, meaning water must be conducted from the base of the plant. Media in category "Polytrichum commune" The following 132 files are in this category, out of 132 total. The lower portion is covered by gray rhizoids, and these mosses are single sexed. Polytrichum commune Hedw. perigoniale: Plants growing in congested tufts; stems to 6 cm tall; leaves closely spaced and tightly overlapping, ribbon-like, contorted when dry; the marginal teeth not as sharp as in var. When dry they are erect, but when moist they are sinuous with recurved tips and are generally spreading to broadly recurved, or sharply recurved from the base. : POCON: Polytrichum commune Hedw. Also known as common haircap, great golden maidenhair, great goldilocks, common haircap moss, or common hair moss. Symbol Scientific Name; POCOM4: Polytrichum commune Hedw. Additionally, the leaves will curve and then twist around the stem when conditions become too dry, this being another xeromorphic adaptation. commune; topmost cells of the lamellae narrow and only shallowly retuse, the groove therefore shallow (FNA 2007). It is toothed from the base of the blade up to the apex, with the teeth being unicellular and embedded in the margin. 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