Hygrophila Lancea Araguaia Pink Lady

Botanical & General Information

• Scientific Name: Hygrophila ringens (L.) R.Br. ex Spreng. 

• Family: Acanthaceae 

• Common Names: Pink Lady (aquarium trade), Water Wisteria (sometimes confused), and various local names like Keremak (Malaysia) or Toiting (Thailand) .

• Native Range: It has a wide native distribution across Tropical and Subtropical Asia, including countries like India, China, Japan, Korea, Thailand, and Vietnam .

• Growth Habit in Nature: In its natural habitat, it is an erect or ascending annual or short-lived herbaceous plant, typically growing near swamps, streams, and other wet, periodically humid locations from sea level up to 1000 m altitude . It can grow up to 90-120 cm tall .

✨ Physical Characteristics (Morphology)

• Leaves: The leaves are simple, arranged oppositely on the stem, and are generally lance-shaped (linear-oblong to elliptical). Their size can vary greatly, from 1-16 cm long and 0.5-5 cm wide . The margin (edge) of the leaf can be entire, slightly wavy (undulate), or finely scalloped (crenulate) .

  • The "Pink Lady" Trait: In its aquarium form, the leaves are the main attraction. Under high lighting, the leaves can develop vibrant pinkish hues, which is why it's called "Pink Lady" .

• Stem: The stem is subquadrangular (somewhat four-angled) and can root at the lower nodes .

• Flowers: The flowers are small and grow in dense clusters in the leaf axils (where the leaf meets the stem). They are typically a pale violet-blue or whitish color and are two-lipped, a characteristic of the Acanthus family .

• Fruit & Seeds: The fruit is a linear-oblong capsule, about 1-2 cm long, containing multiple small (approx. 1.5mm), hairy seeds .

🌱 Cultivation and Care (As an Aquarium Plant)

This is where the "Pink Lady" variety gets its name. It's important to note that the vibrant pink coloration is a response to its environment in a controlled aquarium setting .