25
Mar
2009
Alnus incana (L.) Moench - white alder
Trees and shrubs | Magnoliopsida

Scientific name - Alnus incana (L.) Moench

Alnus derives from the Celtic 'the lan' = near rivers; incana specific name derives from the Latin 'canuto' = white on the underside of the leaves.

Synonyms - Betula Alnus, Betula incana.

Popular names - white alder, Aulnat blanc, Grauer, Weisser, ontano bianco, mountain alder.

Distribution and Habitat - originally from Northern and Central Europe, the Caucasus, East Asia and North America.

Description - mano tree or shrub that can reach 20 m, with stem often crooked, crown with branches thick, upward, lush foliage, lujerii in young gray, pubescent. Bark smooth, shiny, whitish gray, the old copies, to the base with shallow cracks. Wide elliptical leaves up to ovatBy 4.10 cm long, 4-6 cm wide, rounded to the double needle and lobe, pointed, gray green face, white inside gray, furry, ready alternative. Laminated ribs are straight, neramificate to head. Flowers unisexuate in Ament, is formed in the summer and before the leaf opens, the following spring. After fertilization, the female form conulete fruit (strobili) small, Sesia, many grouped 4-8, in one place. Fruits are small samara pentagonal small, narrow wings, red-brown. Seed wings are equipped with air bags that float on water to help release.

Growth rate - fast, powerful and drajoneaza few lastareste, with longevity a little under 100 years, on average 50-60 years.

Tolerances - air pollution, smoke, drought and shading. Resistant to frost.

Requirements - species rustic mountain adapted to harsh conditions, with the season you willgetatie short, supporting good frosts at high altitudes the increase. Placements prefer light and moist.

Is less demanding from the ground, so the soil rich vegetand well, loose, and the soil compacts,

cold, on the contrary the limestone or acidic soils in bogs, or poorly formed, cruel. Hang in excess water and to soil drought.

Propagation - Seed sown in autumn, winter and early spring snow or by grafting to

ornamental varieties, rootstock is A. glutinosa.

Diseases and pests - Phytoptus rudis.

Cultivars and varieties - 'Angustissima' narrow leaves and iregulat incision, 'Aurea' stalk sheet are yellow, 'Bolleana' iregulat stained yellow leaves,

Properties and Uses --forest species of interest, used as a pioneer plant, because its rusticitatii,

emphasizing and strengthening bank valleys flowing water, degraded land, slopes fast, ravenele mountain torrents and river. The strong fixed drajonarea land erosion in areas with slopes împiedecand emphasized.

The wood is processed well, polished rims, has an average resistance to air and water, between 10 and 40 years, întrebuintandu to the production of plywood and sheets of chips, pencils, boxes, packaging products, turning. Tanning substances in the bark are used in paint, bark and fruits having tinctorial properties.

Species may be used for public green spaces, enriching the soil in nitrogen because the roots nodozitatilor and fertilizandu him by litter.

Bark is used against rheumatism, the Americans used to treatbad anemia, and diaforeica for urinary problems.

References

C. Colston Burrell - Invasive Plants Native Alternatives - Brooklyn Botanic Garden, 2006

E. Hulten - Flora of Alaska and neighboring Territories - Stanford University Press

Gary Stacey, Robert H. Burris, Harold J. Evans - Biological Nitrogen Fixation - Springer, 1992

Stubbendieck James, Stephan L. Hatch, LM Landholt - North American Wildland Plants - University of Nebraska Press, 2004

MM Grandtner - Elsevier's Dictionary of Trees - Elsevier Science, 2005

M. Forrest - Landscape Trees and Shrubs - CABI Publishing, 2006

See also
Top
Trees and shrubs
Hydrangea - Hortensia

Genus includes 80 species, the most popular are H. macrophylla, H. arborescens, H. paniculata and H. quercifolia. Shrub or voluble species with opposite leaves. Flowers solitary or grouped in inflorescences type corymb, Raceme. Ovary compound, 2-10 rags, below. Capsule truncata. Seeds numerous, ribbed.

 
Dasiphora fruticosa

Dasiphora fruticosa - deciduu shrub, native of Asia, grows on wet soils and wet rocks.

 
Ostrya carpinifolia

Ostrya carpinifolia - used as an ornamental species for gardens, parks and green street.

Ostrya is derived from Greek 'Ostrya', referring to the shape of bracts that protect the fruit.

 
Thunbergia alata - black-eyed Susan

Thunberg spelled - a species native to tropical Africa, but common as ornamental plants.

 
Menzies ferruginea Smith

Shrub 1-2 m tall, thin stalk, reddish brown, slightly pubescent, terminal buds in bouquets, bark red-brown to gray-brown, thin, becomes scaly. Leaves alternate, decidue, nervatiune pinnate, obovata-elliptic, 3-6 cm long, dark green on upper and pale green inside, margins entire or soirees.

 
Magnoliopsida
Cucumis sativus L. - cucumber

Herbaceous annual, monoecious, climbing, 1-4 m. Leaves alternate, palmate-lobate, lobes acute and angulosi-toothed, 7-20 x 7-15 cm, scabrous, 5-20 cm long stalks. Flowers unisexuat-mono, pentamere, calyx Vilos, 5 sepa narrow-triangular, 0.5-1 cm long; Corola campanulata, yellow-gold petals 2 cm long

 
Rhaponticum scariosum

Rhaponticum scariosum - Alpine endemic species, grows on mountain pastures from 750 to 2500 m altitude.

 
Paeonia lactiflora

Herbaceous perennial, 50-80 cm tall, vigorous root-branched, cylindrical, 5-20 cm long and 1-2.5 cm in diameter. Strain fasciculated, erect, branched in upper parts. Leaves alternate, Terni-compound, the last segment with red ribbed, oblong-elliptic; foliolele are ongust-ovata or elliptic, 8-12 x 2-4 cm. 6.10 cm long stalks

 
Polygala chamaebuxus

Polygala chamaebuxus - perennial, evergreen, subfrutescenta, native to Central, Eastern and South-East, it grows on rocky places in alpine floor.

 
Gossypium herbaceum - Cotton

Gossypium herbaceum - Cotton fiber is the most popular material obtained from this plant and the second is cotton oil rich in protein.

 
   Add to iGoogle
Last posts

Categories

Links