10
Jan
2010
Davidia involucrata var. involucrata
Trees and shrubs | Magnoliopsida

Denumire stiintifica – Davidia involucrata var. involucrata

Sinonime

Denumiri populare – Taubenbaum, handkerchief tree, dove tree, gong tong, albero dei fazzoletti.

Distributie si Habitat – originar din sud-vestul Chinei, unde creste la 1200 – 1600 m altitudine.

Descriere – arbore pana la 20 m inaltime; coroana la inceput conica apoi devine neregulata, ramuri orizontale. Scoarta gri-maronie. Mugurele terminal are forma ovoida, 6-7 mm lungime, acuminat, rosu-brun inchis. Mugurii laterali 6-8 mm lungime. Frunze altene, lung petiolate, lat-ovoida, 8-16 cm lungime, acuminate, baza cordiforma, nervuri evidente,  verde pe partea superioara, ± hirsute pe partea inferioara, stipele absente. Flori lung pedunculate, flori rosii grupate in capitul, 1-2 cm diametru, 2 bractee, 20-25 cm lungime, la inceput verzi dar devin albe odata cu maturitatea florilor; bracteele cad la sfarsitul antezei; rolul bracteelor este de a proteja polenul de ploaie. Infloreste in aprilie-mai. Fruct drupa, elipsoidala, mezocarp carnos, contine pana la 8 seminte. 2n = 21

Rata de crestere – moderat-repede, aproximativ 0.5 m pe an, si poate ajunge la 7-8 m in 20 de ani.

Tolerante – insorirea si semiumbra.

Cerinte – prefera soluri bogate, umede, bine-drente, pH 6.5 – 7.

Management – necesita udari regulate.

Propagare – prin seminte, se planteaza intregul fruct deoarece coaja protejeaza semintele de uscare, care poate inhiba germinarea semintelor. Germinarea are loc dupa 5-8 luni. Puietii trebuie protejati de inghet.

Boli si Daunatori – nu se cunosc probleme serioase.

Parteneri de gradina – Rhododendron sp.

Cultivaruri

Proprietati si Utilizari – poate fi cultivata ca specie ornamentala in parcuri si gradini.

Curiozitati – Davidia involucrata a fost descoperita in 1869 de catre Armand David (1826-1900) un franciscan francez, si a fost introdusa in Europa si numit in onoarea sa in 1904 de catre Ernest Wilson.Florile sunt bogate in nectar si atrag diferite tipuri de insecte polenizatoare precum Apis sp., Halictus sp., Lasioglossum sp. si Xylocopa sp.

Bibliografie

Dina M. Miller - 400 Trees and Shrubs for Small Spaces – Timber Press, 2008

John Simmons – Managing the Wet Garden – Timber Press, 2008

Kim E. Tripp, J. C. Raulston – The Year in Trees – Timber Press, 2001

Peter Loewer – The Evening Garden - Timber Press, 2002

See also
Top
Trees and shrubs
Arbutus unedo

Evergreen shrub originating in Southern Ireland and Mediterranean regions, grows slowly, up to 3 to 10 m, reddish bark, young branches are red-hot, dense crown. Leaves alternate, elliptic-lanceolata, 5-10 cm long, parties, except ribs smooth, glossy dark green, pinnate nervatiune. Flowers white to pale pink, sometimes stained with red, 5-10 mm long, campanulata, odorless, ready to panicule 5 cm long, anther clocks.

 
Abutilon darwinii

Abutilon darwinii - ornamental shrub originating in S Brazil. In hot climates are grown as ornamental plants in parks and gardens in cold climates are grown in pots for indoor or greenhouse.

 
Maclura tricuspidata

Maclura tricuspidata - native to North America, used as an ornamental species, used for protection curtains.

 
Hibiscus syriacus

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.

 
Thunberg mysorensis

Thunberg mysorensis is used as an ornamental species for rapid growth and flowers arranged in raceme. Blooms in July-September.

 
Magnoliopsida
Salix cinerea

Bush deciduu, wood. Iregulata crown, branches couples glabra, 4-5 m high. Leaves alternate, simple, rough, 12 x 2-4 cm long, the upper part at first is tomentoasa then becomes glabra, opaque green, the underside is silver viloasa easy.

 
Alnus cordata - alder of Corsica

Alnus cordata is a deciduuous tree, native to Italy and Corsica, occurs naturally in poorly drained soils, in semi-shade. The plant can tolerate maritime exposure, dry conditions as well as a dusty atmosphere. Is cultivated as ornamental trees in gardens and parks.

 
Viola yildirimlii

Viola yildirimlii - endemic in the Mediterranean. Grows on rocky slopes, along with Corydalis rutifolia subsp. erdelii, Primula vulgaris subsp. vulgaris, Anemone blanda, Ornithogalum lanceolatum, Muscari azureum and Gladiolus atroviolaceus up to altitudes of 1800 m.

 
Pachira aquatica

Pachira aquatica growing naturally along rivers in Central and South America. Is cultivated in world wide like ornamental, in hedges or solitary. Resistant to drought anf flooding.

The seeds of P. aquatica are delicious raw, boiled or roasted. Young leaves and flowers are also edible. The seeds are high in protein and edible oil.

 
Aquilegia atrata Koch

Herbaceous perennial. Rhizome thick, vertically or diagonally. Stem erect, branched, pubescent, green or red-purple shades, 30-80 cm high. Leaf sectors lobate 3 lobes or parts, green on the upper face and green on the lower glauca

 
   Add to iGoogle
Last posts

Categories

Links