光果蘇鐵

蘇鐵科

學名:Cycas thouarsii R.Br.

英名:Madagascar Cycad

別名:馬達加斯加蘇鐵

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簡介 Description

蘇鐵屬常綠喬木,原產非洲東部與馬達加斯加島。樹高4~10m,樹徑可達45cm。葉片叢生於莖頂。羽狀複葉長1.5~3m,每側有60~120枚小葉,長10~18cm,葉色淺綠略帶淺藍色。雌雄異株。雄孢子葉聚成紡錘形,高30~60cm、直徑10~15cm,顏色從橘黃色至淡褐色。雌孢子葉長約30cm,有黃色絨毛,邊緣有5~13個齒,有4~10個胚珠。種子卵形,5~6cm,種皮紅棕色,內果皮海綿狀,可以讓漂浮水上以傳播。

An evergreen tree in the genus Cycas, native to eastern Africa and Madagascar. Tree height 4~10m, up to 45cm in diameter. Leaves clumped on the top of stem, pinnately compound, 1.5~3m long, with 60~120 leaflets on each side, 10~18cm long; leaf color light green and bluish. Dioecious. Microsporophyll spindle-shaped, 30–60 cm long and 10–15 cm in diameter, varied in color from orange to pale brown; megasporophyll yellow and hairy, each about 30cm long, with 5-13 marginal teeth, bearing 4-10 ovules. Seed ovoid, 5~6cm, with reddish-brown seed coat, and spongy endocarp which allows the seeds to float on water and spread.

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栽培 Cultivation

全日照溫暖環境,使用排水良好砂質壤土或壤土種植,根部有珊瑚狀的藍綠菌共生,積水會讓根部窒息。具有耐旱性,介質乾才澆水。每季施用一次長效性綜合肥料。繁殖使用播種法。

The plant thrives in full-sun and warm conditions as well as well-drained sandy loam or loam. There are coral-like blue-green bacteria symbiosis on the roots, water logged on the roots will suffocate the roots. Drought-tolerant, water only when the medium dries. Apply a slow-release compound fertilizer once a season. Propagated from seeds.

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應用 Application

蘇鐵類植物是古老的植物,世界各國植物園長種植作為活標本教學展示用。本種較其他蘇鐵屬植物,有生長較快的特性,且容易種植。可以單株使用大型盆器種植,或露地栽培於庭院內,欣賞端莊的樹形與排列有序的葉片。

Cycads are ancient plants, often planted in botanical gardens worldwide as living specimens for teaching and display purposes. Compared with other cycads, this species grows faster and is easy to grow. Suitable for planting in single large containers, or in open spaces in a yard to admire the graceful tree shape and orderly arranged leaves.