Acanthaceae

Lance-leaf Hygrophila

Hygrophila ringens

Narrow pointed leaves packed tightly on a branching stem, in green through reddish brown to purple. Sold under several trade names, and simpler to keep than its reputation suggests.
Light
medium
Difficulty
medium
Height
10 – 20 cm (3.9 – 7.9 in)
Temperature
18 – 30 °C (64 – 86 °F)

Tank conditions

Leaf colour
green, red, pink or purple +1 green, red, pink or purple, bronze or brown
Plant type
stem plant
Growth rate
medium
CO₂ demand
medium
Tolerates light
medium – high
Carbonate hardness
0 – 18 °dKH
Placement
background, midground +1 background, midground, Dutch street
Propagation
cuttings
Grows emersed
yes

Care and keeping

Appearance

Compact, close-set leaves along a stem 10–20 cm tall, so the plant looks dense from top to bottom. Colour runs from plain green to red-brown and purple under good conditions. Several plants in the trade belong here under different names, and their underwater forms look quite unlike one another.

Keeping

Moderate demands: medium light, carbon dioxide helpful rather than essential, ordinary feeding. It branches willingly, and pinching the stems is what keeps the bush tight. Growth is average for the genus — quick enough to fill a space, slow enough not to take over.

Placement

The middle or back of the tank, in a group; its even, compact shape also suits the ordered rows of a Dutch-style layout.

Propagation

By cuttings: cut the top and plant it; the old stem branches below the cut.

Fish and this plant

Matching water does not mean the fish will leave the plant alone.

Cultivars

The same plant with a different look: light, water and care are shared with the species.

Other varieties: Hygrophila lancea "Araguaia", Hygrophila lancea "Sarawak", Hygrophila salicifolia, Hygrophila stricta, Hygrophila lancea ’Araguaia’, Hygrophila lancea Chai, Hygrophila lancea Araguaia, Hygrophila lancea Araguaia Topf, Hygrophila lancea Araguaia 1 2 GROW, Hygrophila salicifolia in Vitro XL, Hygrophila lancea Chai in Vitro, Hygrophila salicifolia Topf, Hygrophila Lancea 'Araguaia' Sp Chai, Hygrophila Lancea 'Araguaia', Hygrophila Lancea Araguaia, Hygrophila Salicifolia Narrow Leaf

Scientific and other names, conservation status

Other scientific names
Hygrophila sp. 'Sarawak', Ruellia salicifolia Vahl, ? dimidiata, Dipteracanthus ringens, Hygrophila angustifolia quadrivalvis, Hygrophila assurgens, Hygrophila barbata, Hygrophila ciliaris, Hygrophila dimidiata, Hygrophila incana, Hygrophila lancea, Hygrophila malabarica, Hygrophila megalantha, Hygrophila obovata, Hygrophila phlomoides repens, Hygrophila quadrivalvis, Hygrophila radicans, Hygrophila ringens, Hygrophila ringens longifolium, Hygrophila ringens ringens, Hygrophila ringens assurgens, Hygrophila ringens cochinensis, Hygrophila salicifolia, Hygrophila salicifolia assurgens, Hygrophila salicifolia cochinensis, Hygrophila salicifolia dimidiata, Hygrophila salicifolia glabra, Hygrophila salicifolia hirsuta, Hygrophila salicifolia megalantha, Hygrophila salicifolia quadrivalvis, Hygrophila stricta, Hygrophila undulata, Justicia lancea, Ruellia angustifolia, Ruellia ciliaris, Ruellia dimidiata, Ruellia hirsuta, Ruellia longifolia, Ruellia obovata, Ruellia quadrivalvis, Ruellia radicans, Ruellia ringens, Ruellia salicifolia, Ruellia undulata, Ruellia upudalii