Amborellaceae

Amborellaceae是一個有趣的故事,它是一個被認為是最古老且最原始的被子植物家族之一。這個家族只有一個現存的屬,即Amborella,僅分布在新喀里多尼亞這個小島上。

Amborella是一種非常特別的植物,它有著獨特的花朵和葉子結構。這種植物的發現和研究對於了解植物演化和遺傳起到了重要的作用。

由於Amborella的特殊性,科學家們追蹤它的基因遺傳,以瞭解它是如何與其他被子植物進化分支相關聯的。這些研究揭示了一些令人驚訝的發現,例如Amborella可能是許多現代花卉的共同祖先。

通過研究Amborellaceae,科學家們能夠更好地理解植物演化的歷史和過程,並揭示了我們生物多樣性的起源之一。這個故事提醒我們植物王國中的每一個物種都有其獨特的價值和貢獻。

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Amborellaceae

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Short Description

Amborella is a monotypic genus of understory shrubs or small trees endemic to the main island, Grande Terre, of New Caledonia in the southwest Pacific Ocean. The genus is the only member of the family Amborellaceae and the order Amborellales and contains a single species, Amborella trichopoda. Amborella is of great interest to plant systematists because molecular phylogenetic analyses consistently place it as the sister group to all other flowering plants, meaning it was the earliest group to evolve separately from all other flowering plants.

Description

Amborella is a sprawling shrub or small tree up to 8 metres (26 feet) high. It bears alternate, simple evergreen leaves without stipules. The leaves are two-ranked, with distinctly serrated or rippled margins, and about 8 to 10 centimetres (3 to 4 inches) long.

Amborella has xylem tissue that differs from that of most other flowering plants. The xylem of Amborella contains only tracheids; vessel elements are absent. Xylem of this form has long been regarded as a primitive feature of flowering plants.

External links

wikipedia

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