Plant atlas

Geographical Origin and Habitat: Mayaca sellowiana is native to South America, where it thrives in various freshwater aquatic habitats, including slow-moving rivers, swamps, ditches, and flooded areas. This species is typically found in waters with low pH values, often associated with peaty substrates rich in organic detritus. Its presence is common in tropical and subtropical regions, indicating a preference for warm and stable conditions.

Taxonomy & Genetics: Belonging to the family Mayacaceae, Mayaca sellowiana is a member of a relatively small genus, often considered a "living fossil" due to its primitive characteristics. Mayacaceae are closely related to other aquatic monocots and are known for their specialization in freshwater environments. The classification of this plant highlights its botanical uniqueness and long evolutionary history, distinguishing it from other more common aquarium stem plants.

Physical Structure: Mayaca sellowiana features a slender, elongated stem, often branched, which can reach considerable heights under optimal conditions. The leaves are small, needle-like, arranged alternately along the stem, giving the plant a feathery and dense appearance. The root system is fine and fibrous, primarily used for anchoring in the substrate, while nutrient absorption occurs predominantly through the water column via its leaves and stem.

Color & Texture: The distinctive color of Mayaca sellowiana is a vibrant bright green or emerald green, which can take on lighter or yellowish hues in the presence of intense light or iron deficiency. The needle-like leaves are translucent and very fine, lending the plant a delicate and almost ethereal texture. This combination of color and structure creates an appealing visual contrast, especially when the plant is used in dense masses within the aquarium layout.

Lighting & CO2: Mayaca sellowiana flourishes under medium to high illumination; insufficient light can lead to stunted development, pale leaves, and elongated internodes. To achieve compact growth and vibrant colors, CO2 injection is strongly recommended, as it significantly accelerates metabolism and prevents algal growth on the leaves. Maintaining a stable photoperiod of 8-10 hours per day is crucial for its health and to prevent stress.

Nutrition & Substrate: As a stem plant, Mayaca sellowiana absorbs most of its nutrients from the

Water Chemistry: This species prefers soft and acidic water, with an ideal pH range between 4.5 and 7.0 and a carbonate hardness (KH) between 0.0 and 6.0. Maintaining the stability of these parameters is more important than achieving specific values at the extremes of the range. Water temperature should be kept between 18.0 and 30.0 °C, although the plant shows optimal growth at higher temperatures, typical of its natural habitats.

Space Management & Placement: Mayaca sellowiana is ideal for midground placement, where it can form dense bushes or carpets if planted in compact groups. Given its fast growth rate, it is important to leave sufficient space between groups to allow for good water circulation and uniform light penetration. Strategic placement can create a sense of depth and a delicate focal point in the overall aquarium layout.

Pruning: Regular pruning is critical for maintaining the desired shape of Mayaca sellowiana and promoting denser, more branched growth. If left to grow unchecked, the lower parts of the stem can become bare due to shading. Pruning stimulates the production of new side shoots, contributing to a bushier and healthier appearance. Clipped stems can be replanted to propagate the plant further.

Risks & Diseases: Mayaca sellowiana is generally hardy, but it can be susceptible to nutrient deficiencies if water column fertilization is inadequate, resulting in pale leaves or stunted growth. Algae can colonize its delicate leaves in cases of imbalances between light and nutrients. Unstable water environments or drastic parameter changes can cause the leaves to melt, indicating significant stress to the plant.