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.
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
Trees and shrubs
Robinia pseudoacacia - Acacia
Tree, 25 m high, crown iregulata, oval, open. Maroni stalk, thin, tomato-brown of thorns present 1.5-2.5 cm long. Small buds superimposed. Leaves alternate, imparipenat-compound, 7-19 folio elliptical, obovata, opposite, entire edge, nervatiune pinnate, 4-5 cm long, green or green glauca, are yellow in autumn.
Lagerstroemia indica L.
Deciduu tree. Global Crown-espansa. Body nodosa, latit basis. Ritidom thin, white-yellow, smooth, glossy. Decidue leaves, opposite or alternate, distances, almost sessile, lamina glabra, elliptic-lanceolata, shiny green on top, the green opaque on the bottom, edge entire, top acute, 7 x 2-3 cm
Hibiscus syriacus - shrub to 3 m high, native of India and China, naturalized in southern Europe. cultivated as an ornamental tree in parks and public gardens, the street alignments or as hedges.
Thunbergia alata - black-eyed Susan
Thunberg spelled - a species native to tropical Africa, but common as ornamental plants.
Calendula officinalis L. - marigold
Stem herbaceous, 20-50 cm tall, branched, erect. Leaves alternate, rib main evidence and glandular hairs, nervatiune pinnate, basal leaves are oblong-lanceolata, 8-14 x 4-5 cm, Sesia, the reniforma, margin entire, apex round upper leaf stalks are short, narrow lanceolata, 5 x 1.4 cm.
Geranium argenteum - herbaceous perennial, grows in the Alps, the limestone rocks in central and northern Italy until SE France, from 1600-2100 m altitude. Rare species.
Acca sellowiana is a slow-growing, evergreen shrub, a native of South America, is now widely grown in the tropics and warm climates as an ornamental, and for its fruit. In late spring it produces quantities of flowers with proeminent red stamens and pinky-white edible petals. After flowering, the foliage can be hard pruned into any shape.
Gardenia jasminoides - Gardenia
Shrub or small tree, growing 1-15 m tall. Leaves glossy, evergreen, opposite, coriacee, oval or elliptical, dark green, 7-10 cm long. Large solitary flowers, double or semiduble, white, 5.12 cm diameter. Bloom from May to September.
Marrubium vulgare - Voronez
Perennial herbaceous plants, root fusiform. Right strain, wood and rigid, pubescent, 30-100 cm tall. Leaves petiolate, opposite, green-gray, pubescent on the underside, lamina ovata or suborbiculara, iregulat-edge gear, top round or obtuse, base subcordata, 2.5-5 cm long, 1-2 cm long stalks.