Pteridium


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Related to Pteridium: Bracken fern

Pteridium

 

a genus of ferns of the family Pteridiaceae. They are herbaceous perennial plants with a creeping, branched root-stock. The solitary fronds are leathery, twice and thrice pinnate, and on long, thick stalks; they are often pubescent beneath. The sporangia are covered by the curled leaf margins.

There are two species of Pteridium. The common brake, or bracken (P. aquilinum), is distributed almost throughout the world, in coniferous and mixed forests. It forms a thick cover on felled trees and is encountered on mountains (Carpathians, Caucasus). P. tauricum, a liana with reddish pubescence on the underside, grows in the foothills and in the lower mountain zone of the Crimea and the Caucasus. The young leaves are sometimes used as food. The starch-rich rootstocks are eaten by livestock; they are poisonous to cattle and horses.

References in periodicals archive ?
The GLMM models showed a significant interaction between seasonality and the presence of Pteridium arachnoideum in total seed abundance (Table 2a, Figure 1a).
Meanwhile Rubus saxatilis, Scorzonera humilis, Calamagrostis epigejos, Pteridium aquilinum, Trientalis europaea, Peucedanum oreoselinum, Solidago virgaurea, Equisetum hyemale, Rubus idaeus occurred only in the burned site.
The understory is rich in herbs such as Arenaria montana, Primula veris, Prunella grandiflora, Viola riviniana, Veronica officinalis, and Pteridium aquilinum, among others species.
For example a common strategy employed to discourage the theft of produce from an unattended farm was to make coils of Pteridium aquilinum (common bracken) fronds and arranging several of them around the field.
Herbaceous pollen that was recorded at higher frequencies includes mainly Cyperaceae, Poaceae, but also Rumex (sorrel), Taraxacum and others, as well as indicators of grazing like Juniperus and Pteridium (ferns), which may hint at pastoral farming.
formacion Mucuchachi pendientes Merida 3890 variables msnm Perfil Vegetacion P mm T [grados]C No 1 Pteridium, 1131 13 Stevia,ia, Gaiadendro, Poa 2 Prosopis 842 21 juliflora, Pithecelobium sp.
A treatment may simultaneously consist of both oral as well as topical administration; for treatment of abdominal edema, the leaves of Pteridium aquilinum are cooked and eaten as vegetable, while the roots are tied to the abdomen.
2008), solo se ha definido el periodo principal de polinizacion (PPP) de aquellos tipos que no estuviesen afectados por esta falta de datos: Betula, Chenopodiaceae/Amaranthaceae y Populus, asi como el periodo principal de esporulacion (PPE) en el caso de las esporas del genero Pteridium.
Species of plant Common name Pteridium aquilinum Western bracken fern Picea engelmannii Blue spruce Toxicodendron diversilobum Poison oak Artemisia californica Coastal sagebrush Artemisia douglasiana Mugwort Baccharis pilularis Coyote brush Lonicera interrupts Chaparral honeysuckle Non-local Lonicera Honeysuckle Sambucus mexicana Blue elderberry Arctostaphylos Manzanita Quercus agrifolia Coast live oak Quercus douglasii Blue oak Ribes californicum Hillside gooseberry Salvia mellifera Black sage Ceanothus cuneatus Buckbrush Cercocarpus betuloides California mountain-mahogany Rosa californica California wild rose Rubus ursinus Pacific blackberry Galium porrigens Bedstraw
The official noted that the Cuban-Venezuelan Mission Miracle eye-care program has helped Guyana "mop up the backlog" of 40,000 pending procedures for cataracts, pteridium and night blindness.