三角椰子屬常綠喬木，原產馬達加斯加。樹幹圓柱形。葉頂生，羽狀複葉，葉片上舉，末端反曲；羽片55~60對，灰綠色，直立於葉軸上；葉柄基部葉鞘擴展，上下排成三列，垂直疊附於莖上，形成獨特的三角形外貌，基部有褐色軟毛。雌雄同株異花，肉穗花序多分枝，生於葉腋；花黃綠色，3朵一組，中央雌花，兩側雄花。7~9月為花期。果卵球形，成熟時呈金黃色；種子橢圓形。

An evergreen tree in the genus Neodypsis, native to Madagascar. Trunk cylindrical. Leaves terminal, pinnate compound, growing upright and arched outward at the end. Pinnae arranged in 55 to 60 pairs, gray-green, erecting on the leaf axis; The leaf sheath located at the petiole base expands into three rows up and down, and vertically stacks on the stem to form a unique triangular shape; leaf base covered with brown trichomes. Monoecious flowers forming axillary spadix and much branched; flowers yellow-green, in a cluster of 3, a female flower in the center surrounded by two male ones. Flowering from July to September. Fruit ovoid, golden-yellow when mature; seeds oval.

喜光照充足、高溫環境，幼株較耐陰。耐寒、耐旱，但水分充足生長較快，每季施用一次長效性肥料。以種子繁殖。

The plant normally grows in sunny and high-temperature environments; the saplings are more shade-tolerant. Hardy and drought-tolerant, Water the plant regularly to accelerate the growth. Apply long-active fertilizer once a season. Reproduced from seeds.

可作庭園景觀樹、行道樹等。種子播種可做小品盆栽欣賞。葉片可作為蓋屋頂用的草料；果實可供食用，松鼠喜食。

The plant can be garden ornament trees, street trees, etc. Seedlings sown from seeds could be enjoyed in mini pots. The leaves can be used for thatching; the edible fruits are a favorite food source to squirrels.