Soiuri de lemn pentru arcasul roman - partea I
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The Ginkgo (Ginkgo biloba; in Chinese 銀杏, pinyin romanization, yín xìng), frequently misspelled as "Gingko", and also known as the Maidenhair Tree after Adiantum, is a unique tree with no close living relatives. The ginkgo is classified in its own division, the Ginkgophyta, comprising the single class Ginkgoopsida, order Ginkgoales, family Ginkgoaceae, genus Ginkgo and is the only extant species within this group. It is one of the best-known examples of a living fossil, because Ginkgoales are not known from the fossil record after the Pliocene.[1][verification needed][3]
For centuries it was thought to be extinct in the wild, but is now known to grow in at least two small areas in Zhejiang province in Eastern China, in the Tian Mu Shan Reserve. However, recent studies indicate high genetic uniformity among ginkgo trees from these areas, arguing against a natural origin of these populations. Therefore, it has been suggested that the ginkgo trees in these areas appear to have been planted and preserved by Chinese monks over a period of about 1000 years. [4] Whether native ginkgo populations still exist has not been demonstrated unequivocally and is therefore uncertain.
The relationship of Ginkgo to other plant groups remains uncertain. It has been placed loosely in the divisions Spermatophyta and Pinophyta, but no consensus has been reached. Since Ginkgo seeds are not protected by an ovary wall, it can morphologically be considered a gymnosperm. The apricot-like structures produced by female ginkgo trees are technically not fruits, but are the seeds having a shell that consists of a soft and fleshy section (the sarcotesta), and a hard section (the sclerotesta).
sursa: wikipedia.
For centuries it was thought to be extinct in the wild, but is now known to grow in at least two small areas in Zhejiang province in Eastern China, in the Tian Mu Shan Reserve. However, recent studies indicate high genetic uniformity among ginkgo trees from these areas, arguing against a natural origin of these populations. Therefore, it has been suggested that the ginkgo trees in these areas appear to have been planted and preserved by Chinese monks over a period of about 1000 years. [4] Whether native ginkgo populations still exist has not been demonstrated unequivocally and is therefore uncertain.
The relationship of Ginkgo to other plant groups remains uncertain. It has been placed loosely in the divisions Spermatophyta and Pinophyta, but no consensus has been reached. Since Ginkgo seeds are not protected by an ovary wall, it can morphologically be considered a gymnosperm. The apricot-like structures produced by female ginkgo trees are technically not fruits, but are the seeds having a shell that consists of a soft and fleshy section (the sarcotesta), and a hard section (the sclerotesta).
sursa: wikipedia.
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Re: Soiuri de lemn pentru arcasul roman
Buna explicatia,o mai citisem si eu la un moment dat,dar daca e gimnosperm tot nu inseamna ca e conifer,inseamna doar ca samanta nu e inchisa in fruct
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Re: Soiuri de lemn pentru arcasul roman
Laricele isi pierde acele iarna. Larix decidua.
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Re: Soiuri de lemn pentru arcasul roman
pentru cei care va intereseaza nuante mai exotice pentru arcuri, ma refer la manere pentru arcuri laminate incercati prun
prunii batrani au o culoare rosie spre maro-roscat, foarte frumos, sau cires, tot rosu dar mai deschis, cu inelele de crestere mai bine conturate
pomii fructiferi mai batraniau nuante coloristice faine
fain la culoare mai este si aninul - arinul - roz
prunii batrani au o culoare rosie spre maro-roscat, foarte frumos, sau cires, tot rosu dar mai deschis, cu inelele de crestere mai bine conturate
pomii fructiferi mai batraniau nuante coloristice faine
fain la culoare mai este si aninul - arinul - roz
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Re: Soiuri de lemn pentru arcasul roman
datii o sansa si pentru un selfbow si nu veti regreta ,este foarte bun de arc daca e uscat cel putin 6 luni .toata familia prunus face arcuri bune.............marian
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Re: Soiuri de lemn pentru arcasul roman
imi puteti spune ceva lemne bune in alungire?
' NOSTRUM VIRET ROBUR ' -Our strength is as a green tree.
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Re: Soiuri de lemn pentru arcasul roman
norocosule ,sa stii ca si singerul este aproape identic ca lemn cu cornul diferenta singerul are mai putine noduri.cind am fost la tine de 1mai am vazut si citeva dealuri in jurul tirgu mures pline de liliac care este si el super pentru arc daca gasesti bucata destul de groasa lunga si nerasucita .
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Re: Soiuri de lemn pentru arcasul roman
as mai adauga la lista sorbus torminalis - sorb de camp. e rar si scump. s-a vandut cu 10000 euro m3, daca nu ma-nsel. daca s-a mai scris de sorb imi cer scuze.
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Re: Soiuri de lemn pentru arcasul roman
florin dealurile cu pricina sint la iesirea spre corunca pe partea stinga de 1 mai erau doua dealuri inflorite in mov am intrebat si localnici din microbuz mi-au spus ca este liliac salbatic inflorit ,ma ofticam ca nu am ocazia sa ma zgirii nitelus cautind ceva lemn in marea de liliac .da am citit de familia sorbus ,,eu cautam sorbus acuparia la iesirile in salbaticia din jurul bucurestiului,iti dai seama ce suparat am fost cind am aflat ca creste in zona de deal si munte .americanii ii zic muntain ash
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