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榉树

2021-04-28
943 次

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Zelkova (Urticaria ulmus) :

Also known as light leaf beech, it is a deciduous tree species of urticaria, ulmus and Beech genera。

Up to 30 meters,Up to 100mm in DBH;The bark is grayish white or brownish gray,Flaking irregularly;The current branches are purple or brown,Sparsely pubescent,Deciduous posterior;Leaf thin paper to thick paper,There's a lot of variation in size and shape,Ovate, oval or ovate-lanceolate,2 ~ 9 cm long,1 to 4 cm wide,Apex acuminate or caudate,Some of the base are slightly skewed,Thin round or shallow heart-shaped,The edges are crested serrated,With short pointed head,Lateral veins 8-14 pairs;Lower coat in upper midvein,hypotrichosis。Petiole 4-9 mm long, pubescent。

Male flowers with very short pedicels, ca. 3 mm in diameter, perianth split to middle, perianth lobes 6 ~ 7, unequal large, outer covered with fine hairs, defunct ovary absent;Female flowers subsessile, diameter ca. 1.5 mm, perianth segments 4-5, outer covered with fine hairs, ovary covered with fine hairs。

Drupe, deviate above, concave, ca. 4 mm in diam., dorsoventral ridge, reticularis conspicuous, glabrous, with persistent perianth。Flowering in April, fruit in October。



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