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Scientific Name– Alnus cordata Loisel. Synonim– Alnus cordifolia Common name(s)– alder of Corsica, Hartbladige Els, Italian alder, Ontano napoletano, Herzblattrige Erle. Distribution and Habitat– native to Corsica and South Italy; occurs naturally on damp soils, in poorly drained areas and depressed sites. Description– deciduuous tree, 10-15 (30) m tall; crown ovoid-conic. Bark greenish grey with numerous lenticels when young, later becoming a light grey-brown with small fissures. Twig slender, olive green, lenticels. Buds are stalked, green turning red an 0.6 cm long. Leaves alternate, simple, broadly oval to rounded, 5-10 cm long, base cordate, margin unevenly toothed, glossy green above, paler with a few scattered brown hairs below in vein axils and along midrib, petioles 2-3 cm long. Flowers monoecious, males flowers yellow-green, in aments elongated, 5-13 cm long, in clusters 3-5 (2); females flowers 6 mm, reddish green turning into a small cone, strobil 2.5-3 cm long, persistent in winter. Flowering in February-March. Fruit woody, 2 - 2.5 cm long, green turning reddish brown when ripe. Winged seeds. Growth rate– fast growth. Tolerances– it tolerates wet soil, but needs ample water. Requirements– does well in dry, acid, neutral and alkaline soil. Management– Propagation– seeds are best sown in a cold frame as soon as it is ripe and only just covered. When large enough to handle, seedlings should be pricked out into individual pots. Plant them out into their permanent positions in the summer.
Cuttings of mature wood, should be taken as soon as the leaves fall in autumn, and be planted outdoors in sandy soil. Pest and Diseases– is susceptible to chlorosis in very alkaline soils. Cultivars– 'Sipkes' 20 m tall, dark and glossy green leaves, recommended habit for a street tree. Properties and Uses– the tree is grown as an ornamental in gardens and parks and as a road-side. Is a windbreak or hedge for maritime areas. Alder trees has a symbiotic relationship and fix atmospheric nitrogen, utilized by the growing plants and enables it to grow well in quite poor soils. Curiosity– Bibliography Andreas Roloff, Andreas Bartels - Flora der Geholze - Ulmer, 2008 Cecil C. Konijnendijk, kjell Nilsson, Thomas B. Randrup, Jasper Schipperijn - Urban Forest and Trees - Springer, 2005 Katharina Pawlowski, William E. Newton - Nitrogen-fixing Actinorhizal Symbioses - Springer, 1ed, 2007 Michael A. Dirr - Dirr's Hardy Trees and Shrubs - Timber Press, 2ed, 1997
Photos
See also
 Trees and shrubs
Campsis radicans
Genus was created by Portuguese botanist João de Loureiro (1717-1791) in the 1790 Flora Cochinchinensis for Campsis grandiflora. Linne named species with TECOM radicans and Thunberg gave the name of Bignonia radicans. Albizzia julibrissin
Albizzia julibrissin - cultivated as ornamental species in parks and gardens, in groups of three, or street alignments. Genus was named by Antonio Duranzzini, in 1772 by Italian Filippo degli Albizzi. Dovyalis caffra - kei-apple
Dovyalis caffra - fruit edible, with a high vitamin C content (80-120 mg/g), potassium (600 mg), and makes an excellent jam. Ziziphus jujuba Mill - jujuba
Deciduu tree, 5.12 m high. Stalk annually, thin, 2-3 mm diameter, pale green, glabra, geniculati. Leaves alternate, bright green, elliptical language-lanceolata, margine crenata, top obtuse or emarginat, the round or asymmetrical, 3-5 cm long; nervatiune arch, median rib and a pair of secondary ribs, pale green stalks, 5-7 mm . Viburnum opulus L. - calin, snowball
Originally from Europe, grows spontaneously in the Netherlands, the soil rich in forests, and forest edge. Description - shrub, 1,3-3,5 m high; ritidom smooth, exfoliating in strips is, open gray on the outside, Brown -yellow on the inside, branched stem. Leaves opposite, 3-lobate, margin iregulat evening, the round or truncata, top acuminata, glabra on the upper face, lower face pubescent, dark green in summer, yellow-orange in autumn. Magnoliopsida
Pittosporum tobira
Shrub 4 m high, dense crown. Bark brown, rough. Leaves persistent, coriacee, simple, language spatulate, entire edge, top round, the obovata, central rib obvious, and glossy dark green upper side, more open bottom, glabra, arranged in vertical false. Blossom umbela Westringia rigida
Shrub 3 m high. Leaves disposed in each vertical 3 (4), the busiest peak, linear, 1.5 cm long, acuminata-mucronata, bright green top and white on the inside of the main rib prominent, margins Revol. Symphoricarpos - Hurmuz
Shrubs decide, prostate or erect, 90-120 cm, originating in the U.S.. Buds scaly, 1.5 mm long. Leaves simple, opposite, short petiolate, 7 cm long. Raceme blossom. Campanulata Flowers in raceme children. Calyx tube slightly globos; Corola campanulata, 4-5 lobes. Fruit drupe, 1-1.5 cm in diameter, S. albus and S. occidentalis fruits white, pink-coral S. orbiculatus fruit. A fruit contains two seeds oblongata. Silene bitlisensis O. Tugay & Ertugrul
Genus Silene contains about 700 species originating in the Mediterranean Sea basin, Silene is the largest genus of Caryophyllaceae in Turkey. Silene bitlisensi - herbaceous perennial species, floral stem is 20-45 cm high, 1.5 mm diameter, glabra, glauca, branched from the base. Antennaria dioica
Antennaria dioica - perennial species, growing on acid soils, deciduous and coniferous forests, subalpine and alpine meadows, from 100-2300 (rare 3100). |
 
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