绿松尾 Mayaca Fluviatilis

Name: Mayaca Fluviatilis 绿松尾
Family: Mayacaceae 苔草科
Lighting: Strong 强光
Position: Middle ground/Background 中景/后景
PH: 6.0 ~ 7.5
Temperature: 24 ~ 26度 °c
GH： 2-12
Difficulty level: ★★★

This is a description of a monocot aquatic plant that’s commonly referred to as “Arrowhead Sagittaria” or simply “Sagittaria.” It’s native to the subtropical and tropical regions of the Americas, spanning from the southeastern United States to Argentina. This plant is a small aquatic or semi-aquatic species that can grow both submerged and emersed. It prefers habitats such as moist soil and shallow waters, especially in springtime along stream bottoms or bays, often in shallow pools. These areas may be highly acidic and rich in organic matter.

The plant has soft, spiral-shaped, alternate leaves that are 1-2 cm long and 0.1 cm wide, displaying a lush green color. The leaves are densely packed and delicate, somewhat resembling moss shoots. It produces pinkish single flowers, about 7-12 mm in diameter, with a white center, on elongated upright stems. The plant flowers whenever conditions are favorable, typically between March and November, peaking from May to October.

Submerged leaves remain relatively elongated, and their color remains within the green spectrum, not turning red regardless of light intensity. In aquariums, it prefers slightly acidic, soft water conditions but can also grow in harder water. It’s a good indicator of iron levels; when lacking iron, the tips of its stems turn pale green, which can be easily remedied by supplementing iron. It readily develops lateral branches in water, growing horizontally and increasing its aesthetic value.

Arrowhead Sagittaria prefers strong lighting; insufficient light can lead to gradual decay starting from the lower stems and leaves, ultimately resulting in plant death. Adding carbon dioxide (CO2) during cultivation is necessary, as it might struggle without it. Water-soluble fertilizers are effective, with nitrogen having the most prominent growth-promoting effects.

單子葉植物,挺水性水草。分佈在美洲的亞熱帶和熱帶地區,從美國東南部到阿根廷。是一種匍匐在地上的小水生植物,也 可以在水下生長。它的首選棲息地包括潮濕的土壤和淺水區,特別是在春天的滲水餵小溪底或海灣,通常在低水池內。這些 區域可能是高度酸性的並且存在大量有機物質。植物體相當柔軟,具有1~2cm長,0.1cm寬的螺旋狀排裂針型互生葉,呈翠綠色。葉子非常密集,細嫩,有點像苔蘚芽。能從細長的直立莖上開出粉紅色的單花朵,中心是白色的,直徑 7-12 毫米,只要 條件合適,這種植物就會開花。一般在3月至11月之間的任何時間,5月至10月期間開花高峰。水中葉變成較為細長,葉色通 常不受光照強度的影響,始終維持再綠色系內,不會轉紅。在水族缸中,它較喜歡具有酸性pH值的軟水,但也可以生長在較硬的水中。它是一種很好的鐵指示植物,在缺乏的情況下,它的莖尖會變成非常淡的綠色,這可以很容易地通過補充鐵來改善。能在水中輕易長出側枝,成橫向生長,可增加觀賞價值。喜好較強的光線,若光量不足,植物體易從下部莖葉開始逐漸 枯爛,終至整株死亡。栽培期間必須添加二氧化碳,否則育成可能有困難。水溶性肥料添加有效,尤其氮肥最具促進生長的效果。