銀樺與紅花銀樺 silky oak and red silky oak

這陣子兩種銀樺均在爆發。實在覺得她們的花朵和果實色彩和型態很吸引。

這兩個近親原籍澳洲。銀樺原生昆士蘭及新南威爾斯等地區,而紅花銀樺原產地就是昆士蘭,大概因此又稱昆士蘭銀樺。

兩者都是引入品種,銀樺該比較長時間了,所以較多見,也會發現接近野生型態的。銀樺與紅花銀樺也有大小的差別,後者屬大型灌木,前者則是高大的喬木。

have spotted the two silky oaks booming lately. the silky oak and red silky oak are both australian natives. perhaps the latter specifically originated from queensland, it also has a chinese common name queensland silky oak. we see silky oak more in hong kong, so i am making the assumption that it was introduced in hong kong earlier. the fact is some big silky oaks are growing in older neighbourhoods and look quite blend into the wild. they look less foreign species. red silky oak however is appearing in parks maybe one or two in each. so it feels like a species introducing to the city with shorter history.

銀樺平日是沉默魁梧的大樹,葉片特別美,像蕨類,有分叉,而且葉底因有銀白色毛,形成一抹接近金屬的色調,名字中的「銀」字應該指此。

銀樺開花卻現奔放,橙金的花,沒有花瓣,由花萼發展出花垂,形成小毛刷陣。陽光底下,金光燦然。

silky oak is an evergreen tree. it look solemn and handsome most of the days. when flowering season comes, the presence transforms。the golden-orange bottlebrush-like blooms seem giving the tree a voice, calling for attention. the petal-less flowers are showy and remind me of flamenco dancing gowns.

紅花銀樺開花也嬌美,粉紅到大紅。照片中呈現花蕾、花開,還有嫩果。這裡就引用《認識植物》網站資料作闡述:「總狀花序頂生,直立,密生,。花紅色,花萼外面有柔毛,萼筒窄狹,先端捲曲緊縮狀,花托直或近似直;腺體顯著,半環形;花柱長,棍棒狀;柱頭盤狀。果實為蒴果,歪卵形,扁平,先端銳尖。」

紅花銀樺的葉跟銀樺有相近的特徵,葉羽狀深裂,葉緣反捲,背面有銹色毛茸。但紅花的葉最大分別是不會分叉的。

red silky oak blossoms are attractive but the beauty is in a different way. its pinky red colour brings a youthful and girly vibe. this species has a smaller built, it is more a tall scrub or a small tree.  its leaves are pinnate with deeply divided, linear to lanceolate segments, with curled-back margins. silky oak tree leaves share similar features however i have to give preference to it because its leaves are more delicate. its dark green delicately dented bi-pinnatifid leaves reminiscent of a fern frond.

銀樺 silky oak (grevillea robusta) – kingdom: plantae 植物界 | (unranked) 演化支: angiosperms 被子植物 | (unranked) 演化支: eudicots 真雙子葉植物 | (unranked) 演化支: rosids 薔薇類植物 | order: proteales 山龍眼目 | family: proteaceae 山龍眼科 | genus: grevillea 銀樺屬 | species 種: grevillea robusta 銀樺   (source: wiki & 維基中文)
紅花銀樺 red silky oak (grevillea banksii) – kingdom: plantae 植物界 | (unranked) 演化支: angiosperms 被子植物 | (unranked) 演化支: eudicots 真雙子葉植物 | (unranked) 演化支: rosids 薔薇類植物 | order: proteales 山龍眼目 | family: proteaceae 山龍眼科 | genus: grevillea 銀樺屬 | species 種: grevillea banksii 紅花銀樺   (source: wiki & 維基中文)

 

2012 年寫過《銀樺 silky oak》,可參考閱讀。this blog wrote about this species in 2012. check it for more details of the plant.

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