Aponogeton madagascariensis var. henkelianus

Stoffels Aponogeton madagascariensis var. henkelianus, commonly known as the Madagascar Lace Plant, is a highly prized and distinctive aquatic plant known for its unique, lattice-like leaves. It is a bulb plant and is best suited for experienced aquarists due to its specific care requirements. 

Key Characteristics

• Scientific Name: Aponogeton madagascariensis var. henkelianus
• Common Name: Madagascar Lace Plant
• Origin: Madagascar
• Leaves: The primary feature is its open, net-like structure (fenestrated leaves) with no tissue between the veins, a morphological adaptation to reduce drag in fast-flowing streams. The henkelianus variety is distinguished by specific irregular transversal veins.
• Size: Can grow quite large, with leaves reaching up to 55 cm (22 inches) in length and a total height of 20-50 cm (8-20 inches) in the aquarium, making it an excellent focal point or background plant for medium to large tanks.
• Growth Rate: Moderate to fast. 

Care Requirements

• Lighting: Requires medium to high lighting for optimal growth.
• CO2: CO2 injection is highly recommended for robust growth.
• Water Parameters:
• Temperature: Prefers cooler water, ideally between 20-26°C (68-79°F). Higher temperatures can slow growth.
• pH: 6.0-7.5.
• Water Flow: Good water circulation is important to keep the delicate leaves free of debris and algae.
• Substrate: A nutrient-dense aquarium soil or substrate is highly recommended. Place the bulb in the substrate, ensuring the top half remains exposed to prevent rotting.
• Maintenance: Requires regular maintenance, including trimming dead leaf tips and keeping the leaves free of algae.
• Rest Period: Like other Aponogeton species, this plant often goes through a natural "rest period" where it might shed all its leaves. The bulb is typically still viable and will sprout again after a few weeks or months. 

Propagation

Propagation is primarily done via seeds produced from its flowers or by bulb division. The plant will occasionally send a flower spike to the water surface.