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五梨跤

Rhizophora mucronata Lam

Photo by yzess60309
Published on Project Noah
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23.0202, 120.127

Field Notes

Description:

1.常綠喬木,樹皮灰褐且光滑。
2.葉對生,為卵形或橢圓形,有厚皮層以防止水份散失,葉先端具有柔軟的凸尖。
3.花瓣四片,為白色,邊緣有細毛;花萼也為四片,淺黃色;開花期在6到7月。
4.樹幹及側枝之上端會長出多數氣根。氣根於中途分歧,延伸入地下而成支持根。
5.胎生苗在7到8月成熟,胚軸比水筆仔長約15~26公分,有些可到50公分,皮孔的疣狀突起明顯。

Habitat:

生長在河口沼澤地,台灣的紅樹林以五梨跤(紅海欖)的數量最為稀少,主要分布在台南市的四草與四鯤鯓;而水筆仔主要分布在台灣北部。

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