[速寫 sketch] 扭莢山綠豆 beggar weed (desmodium tortuosum)

近個多月,在濕地公園一草地上,留意到一叢紅色的乾草。走近細看,果實異常有趣,像小女孩的玩具首飾般。

in the past month or so, a bunch of dry herb on a lawn at the wetland park has drawn my attention. the pods are so curiously looking, almost like some toy jewelry.

beggarweed

花了好陣子搜尋,終於知悉此為扭莢山綠豆。然後比對我的照片庫,果然,夏天已邂逅其花期。

It spent me some time to look up this plant – beggar weed. From the information I traced back in my photo inventory. Then I found I have met this herb back in summer.

beggarweed flower

familia: fabaceae 豆科| subfamilia: faboideae 蝶形花亞科| tribus: desmodieae |  subtribus: desmodiinae | genus: desmodium 山螞蝗屬 | species: desmodium tortuosum  wikispecies

參考 ref:

  • 直立草本。原產南美。
  • 全株密生毛。莖自基部開始分枝。
  • 總狀花序,頂生或腋生的。苞片狹卵形,外面被毛。花两朵生於每節上。
  • 莢果具五六圓形莢節,腹背兩縫線於節間縊縮而呈念珠狀,被灰黃色鉤狀小柔毛 。《香港自然生態論壇》
  • erect plant to 1.8 m tall, sparsely branched.
  • leaves with 3 leaflets. stem covered with sticky hairs
  • inflorescence a raceme with pea-shaped flowers in pairs, standard petal usually pink to bluish.
  • pod flattened, 3-7 segments equally indented on both sides; covered in hooked hairs. each seed in a separate compartment
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