底毛为浅黄色或灰色。

The undercoat is buff or gray.

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只有头部和肢体前部的毛是短而平的，其他部位的毛为中等长度。

Except for the head and former faces of the limbs where the hair is short and flat, the hair is abundant on all over the body, of a medium length.

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叶背毛为较稠密的长柄树状毛、长柄叉状毛、长柄单枝毛和长柄、腺细胞大的粘性腺毛的泡桐为高度抗病。

Leaves with dense long stalk dendroid trichome, long stalk forked trachoma and long stalk trichome with big glandular cells were resistance to the disease.

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