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.


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
Trees and shrubs
Viburnum tinus

Popular names: English - Laurestinus Viburnum, tinus Laurel, Tinus laurifolius, Italian - lentaggine, Lauro-tino, alloro-tino, laurentino.

Viburnum tinus is originally from southern Europe and the Mediterranean.

Fremontodendron californicum

Fremontodendron californicum - originating in Baja California, California and Arizona. Genus was named by JC Fremont.

Camellia japonica

Evergreen ornamental plant of the Theaceae family, native from Eastern Asia, its origin is still controversial, being considered by some as species indigenous from Japonia and, by others, from China. It was introduced into Europe by the Portuguese in 1542 and soon spread to Spain, England, France and Italy; into United States at the beginning of the 18th century, and in Australia during the mid 19th century.

Pimenta racemosa (Mill.) JWMoore

Shrub or small tree, 7.5-15 m high; ritidom thin, scaly, producing a scaly trunk. Leaves pungent rum, obovata to elliptic, 3-15 x 1.2-7.5 cm, acute to round at the narrow top, coriacee.

Lysimachia vulgaris

Lysimachia vulgaris - perennial species, herbaceous with underground rhizome widespread in temperate regions of Europe and Asia, grows in wet environments, wetlands, side channels and water courses, from 0 to 1200 m altitude.

Angophora hispida Blaxell

Shrub or small tree, 4-5 m high. Gray-red bark at first smooth, exfoliating in due course. Leaves opposite, Sesia or short stalks, cordiform, 5-10 x 2.5-4.5 cm, pale green, pubescent. 3.7 flowers in a corymb, 10-15 cm diameter. Sepa free (dialisepal), green, petals free (dialipetal), white cream. Blooming in January. Fruit capsule.

Tribulus terrestris - the old woman's teeth

Herbaceous annual, prostrata, with branches 80 cm long. Paripenat-compound leaves, 4-8 folio, oblong folio, 4.12 x 4 mm. Sepa 2-4 mm long. Petals 3.6 mm long. Stigma pyramidal-elongated. Blooms in May-September.

Cirsium palustre

Originally from Europe and western Asia, growing on wet soils and peat, from plain to 1800 m altitude.

Eschscholzia californica - California poppy

Perennial species in the area of origin, in other regions is annual, reaching up to 5-60 cm high, glabra, glauca. Stem branched, decumbenta. Leaves basal and caulinare, green-glauca, sectors, lobes linear or obluongi, glabra. Floriferi buds are obconici pick. Flowers solitary, peduncle of 5-15 cm long, calyx acute or acuminata, glabru, glauca; Corola consisting of 4 petals yellow-orange, 5 cm long, numerous stamens.

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