Description
The Willow-leaf Hygrophila is native to wetlands in tropical Asia and long known as aquarium plant. It belongs to the Hygrophila ringens group as well as Hygrophila lancea. In its terrestrial (emersed) form, its stems may get about one meter tall, with about 10-15 cm long, 3 cm broad leaves. Light purple flowers may appear in the leaf axils of emersed shoots. The submerged shoots grow upright and are hardly branched. They look best when they are allowed to reach a height of about 30-40 cm. The firm stem is round in cross section, about 2.5 mm thick, green with red-brown tinge above the nodes, the internodes up to about 4 cm long. The submerged leaves are narrowly lanceolate, medium to light green, to about 11.5 cm long and 1,9 cm wide, with about 7 mm long stalk. Newly appearing leaves at the shoot tip are reddish with light brown-pink midrib. The plant grows moderately fast under aquarium conditions.
Characteristic
Large, light green stem plant
Upright habit
Up to 15 cm long, narrow leaves
Category
Middle Ground
Carbon Dioxide
need
