2019年8月22日 星期四

小果酸模


                                                                     小果酸模 Rumex microcarpus 蓼科

        齒果酸模在台灣有另一近似種,未結果時,兩者很難區分。果期則可見本種宿存花被片相對較小-邊緣齒牙少 (0-1),明顯與齒果之4對齒牙不同。



小果酸模-零星分布於南部漁塭荒野。植株形態與齒果酸模近似。葉橢圓披針形。

果期-基生葉幾乎落盡。


莖生葉-長橢圓披針形至卵狀橢圓形。

果時-宿存花被片邊緣僅見一對刺齒。

刺齒也可能闕如。
成熟瘦果紅褐色。



        後記:齒果酸模的內輪宿存花被片每邊有24個刺齒,通常是3個,小果酸模是每邊有01個短刺齒,而且瘤狀物比較大,但是臺灣的族群有時是02個短刺齒,同一朵花的3片內輪宿存花被片不一定會一樣,12個短刺有另一個學名叫 Rumex dentatus subsp. nigricans,但是臺灣的族群是介於 Rumex microcarpus Rumex dentatus subsp. nigricans 之間。

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