長柱茅膏菜 drosera oblanceolata

茅膏菜屬,英文學名 drosera 的俗名是 sundews ,很象形的屬名。因為此多年生草本,葉面毛絨,這些毛毛的觸鬚分泌「汁液」形似朝露,作用吸引及消化昆蟲之用。

對,茅膏菜屬是吃肉的植物。此屬全球約發現190 多種植物。而據《香港植物名錄》,香港茅膏菜科的植物有五種。

照片所見,是一月底在柏架山記錄的。

見後一直搜查資料辨識,爭持於這是長柱茅膏菜抑或錦地羅/小毛氈苔,兩者都是香港原生而常見的,最後歸納是前者,主因植莖較長。

偶爾會遇到此植物,不限於柏架山,每次都在非常濕潤的石坡地面。不罕見,但每次總有種榮幸遇到的心情。可能因此植物的面貌,有如蓮座的造型,晶瑩的葉面飾樣。drosera-oblanceolata-jan17-c

drosera is one big genera of carnivorous plants, with over 190 species around the world known now. most of them are perennial herbaceous. it is commonly known as the sundews, vividly outline the outstanding feature of its leaves, the glistening drops of mucilage at the tip of each tentacle that assemble morning dew drops.

there are about five sundews recorded in hong kong so far.

and i believe these little ones belong to one of the hong kong natives called drosera oblanceolata. this species is not rare in the city. but one has to be careful to find them, usually at moist rock or slope ends.

the glittering and elegant leaf features are jewels to our eyes but deadly weapons to small bugs the plants target at. this mucilage helps luring insects to the plant, gluing and finally to digest them.drosera-oblanceolata-jan17-b

 

drosera-oblanceolata-jan17-a長柱茅膏菜 drosera oblanceolata – kingdom: 植物界 plantae | (unranked) 演化支: angiosperms 被子植物 | (unranked) 演化支: eudicots 真雙子葉植物 | (unranked) 演化支: core eudicots | order: 石竹目 caryophyllales | family: 茅膏菜科 droseraceae | genus: 茅膏菜屬 drosera (sundews) | species: d. oblanceolata 長柱茅膏菜   (source: wikipedia)

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