Encyclopaedia

PlantFreshwaterIntermediate
©AI Generated·Proprietary

Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

A beautiful round-leaved variation of Bacopa monnieri, offering a fleshy, bulletproof texture that thrives in low-tech aquariums.

Taxonomy
Class:Magnoliopsida
Order:Lamiales
Family:Plantaginaceae
Genus:Bacopa
Species:Bacopa monnieri "Rundblättrig"

Share

Check out Bacopa monnieri "Rundblättrig" on Atlarium

PracticeRecognition quizzesPhotos, names, origins, and puzzles to review Atlas species.Open quizzes
Water Temperature

15 - 28 °C

pH Value

6 - 8

Water type

Freshwater

Light

Medium

CO2

Low

Expected height

25 cm

Expected width

10 cm

GH

4 - 20 dGH

KH

2 - 30 dKH

Species description

Geographical Origin and Habitat: Bacopa monnieri "Rundblättrig" (German for "Round-Leaved") is a highly specialized, intensely cultivated botanical anomaly. It does not exist as a dominant species in the wild. Instead, it was isolated by high-end German aquatic nurseries from a very specific, localized wild population of Bacopa monnieri that exhibited a stark deviation in leaf morphology. While it retains the aggressive marsh-weed survival genetics of standard Indian Bacopa, it is cultivated exclusively in strictly controlled laboratory environments to maintain its signature, beautiful round foliage.
Taxonomy & Genetics: Taxonomically, it belongs to the Plantaginaceae family as a direct variant of Bacopa monnieri. The genetic mutation of the "Rundblättrig" variant specifically targets the cellular formation of the leaf blade. Instead of the classic, elongated teardrop shape of standard Bacopa, the genetics force the leaf to expand outward laterally, creating a perfectly circular, coin-like shape. This genetic trait is highly stable but visually transforms the plant into an entirely different architectural asset for professional aquascapers.
Physical Structure: The structural architecture of the "Rundblättrig" variant is uniquely transitional. It possesses the thick, succulent stems of standard Bacopa, but it behaves differently based on planting. If planted deeply in groups, it will grow vertically like a standard stem plant. However, if given space and high light, its heavy, round leaves cause the stems to aggressively cascade, arch over, and creep heavily along the substrate or cascade beautifully down from high hardscape perches. The leaves are perfectly round, resembling bright green coins marching in opposite pairs along the stem.
Color & Texture: The coloration is universally a very intense, completely opaque, vibrant lime-green. Like all B. monnieri variants, it is genetically incapable of flushing red or producing anthocyanins, regardless of how aggressively it is illuminated. The texture is notoriously fleshy, succulent, and slightly brittle. The round leaves are incredibly thick, making the plant virtually immune to being damaged by snails, shrimp, or aggressive bottom-dwelling fish.

Care, breeding and tankmates

Lighting & CO2: It is an extremely adaptable powerhouse. It will happily survive and grow strictly vertically under low-intensity lighting. However, to force the plant to exhibit its signature cascading, creeping behavior and form dense, round-leaved bushes, extreme high-intensity LED lighting is mandatory. Pressurized CO2 injection is not required for survival, but it is heavily utilized by professional aquascapers to drastically accelerate its growth and force the round leaves to grow larger and pack more densely along the stem.
Nutrition & Substrate: This variant is an aggressive, opportunistic feeder. To support the heavy, fleshy stems and cascading growth, it MUST be planted in a premium, nutrient-dense aquasoil heavily fortified with iron root tabs. While it can survive in inert sand, it will grow leggy and vertical. Because it arches and creeps, it frequently sends out tiny white adventitious roots from every leaf node, aggressively pulling heavy macronutrients directly from the aquasoil to fuel its rapid expansion.
Water Chemistry: It is virtually indestructible, having inherited the absolute bulletproof hardiness of wild Bacopa. It thrives effortlessly in standard tropical temperatures (22-28°C) but is completely comfortable in cold-water setups. It ignores chaotic, wild fluctuations in pH, severe ammonia spikes, or extreme water hardness. It easily survives in high-end reverse osmosis (RO) setups or liquid-rock tap water. It is an elite, flawless detailing plant that is completely beginner-friendly.
Space Management & Placement: Because of its unique, round-leaved creeping habit, it is the ultimate cascading midground plant. It should be wedged into crevices high up on sprawling driftwood or massive rocks. The heavy, coin-like leaves will force the stems to arch gracefully and cascade down over the hardscape like a green waterfall. Alternatively, planted in the foreground under intense light, it will creep outward to form a highly unique, chunky, bright green carpet of round leaves.
Pruning: Pruning is simple but necessary to maintain the shape of the cascade. Use sharp curved scissors to snip the thick stems exactly where you want the bush to branch. The rooted section will rapidly push out two new lateral shoots. Take the severed tops and instantly replant them directly into the aquasoil or wedge them into new cracks in the driftwood. If the lower stems become bare due to self-shading, simply uproot, discard the ugly bottoms, and replant the pristine tops.
Risks & Diseases: It is completely immune to biological diseases or melting. The primary risk is extreme self-shading. Because the perfectly round leaves are so broad and fleshy, they cast massive shadows on the stems below them. If the cascading bush becomes too dense, the buried stems will be completely starved of light, intentionally drop all their leaves, and rot away from the substrate. Routine thinning of the top canopy is required to allow light to penetrate the entire structure.

Geographic Origin and Distribution

Bacopa monnieri "Rundblättrig" (German for "Round-Leaved") is a highly specialized, intensely cultivated botanical anomaly. It does not exist as a dominant species in the wild. Instead, it was isolated by high-end German aquatic nurseries from a very specific, localized wild population of Bacopa monnieri that exhibited a stark deviation in leaf morphology. While it retains the aggressive marsh-weed survival genetics of standard Indian Bacopa, it is cultivated exclusively in strictly controlled laboratory environments to maintain its signature, beautiful round foliage.

Origin

Selective breeding and cultivarsExtra-Amazon South AmericaCentral America and CaribbeanNorth AmericaSouth and Southeast AsiaAustralia, New Guinea, and Oceania

Plant profile

Placement
Midground
It is ideally placed in the midground or background depending on tank size. Grouping several stems together creates an attractive, dense thicket. Its perfectly round leaves offer a very tidy and uniform appearance in the aquascape.
Botanical form
Stem
As the name implies, it features noticeably rounder leaves compared to the standard species. The leaves are light green, fleshy, and grow opposite each other on a thick, upright stem. The highly symmetrical growth pattern is visually very soothing.
Growth
Medium
This variant grows at a moderate pace, making it very easy to manage. It does not aggressively take over the aquarium, requiring only occasional pruning. Its predictable growth makes it a favorite for structured layouts.
Substrate
High
The "Rundblättrig" (round-leaved) variant of Bacopa monnieri thrives best when planted in a highly nutritious substrate, heavily relying on root absorption to fuel its broader leaf development. Its vigorous roots require a deep, active aqua soil bed of about 5 to 7 centimeters to anchor properly and access the rich mineral reserves needed for optimal health. A fine-textured substrate allows the delicate root hairs to penetrate easily, ensuring the thick stems are structurally supported and well-fed. Without a nutrient-dense base, this demanding cultivar may struggle to maintain its distinct round leaf shape and vibrant green coloration.
Column fertilization
Recommended
Liquid fertilization is effective as it absorbs nutrients directly from the water column. Regular additions of trace elements keep the foliage a vibrant, healthy green. Adequate potassium helps maintain the integrity of its beautiful round leaves.
Root fertilization
Required
A nutrient-rich substrate is beneficial and promotes a strong root system. While it can draw most of its needs from the water, root tabs provide a reliable backup source. Good root anchorage is essential as the stems grow taller and thicker.
Trimming
Regular
Prune by simply cutting the top portions of the stem with sharp scissors. The lower parts will shoot new side branches from the nodes. Replanting the trimmed tops quickly thickens the plant cluster.
Propagation
Cuttings
Propagation is incredibly easy through stem cuttings. Snip any healthy stem section and insert it straight into the substrate. It will grow new roots in just a few days.
Sensitivity
LOW
It retains the extreme hardiness of the wild Bacopa monnieri species. It handles fluctuations in water parameters very well and is rarely affected by common pests. It is highly resilient against melting or sudden die-offs.
Layout role
Midground, Foreground, Epiphyte, Nano
Its round leaves provide a wonderful geometric contrast to grassy or needle-like plants. It is excellent for softening the sharp lines of rocks and wood. It serves as a beautiful, structural accent in any nature aquarium or Dutch-style setup.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Bacopa monnieri

Bacopa monnieri

Bacopa monnieri

View details->
Bacopa monnieri 'Compact'

Bacopa monnieri 'Compact'

Bacopa monnieri 'Compact'

View details->
Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

View details->
Bacopa sp. "Japan"

Bacopa sp. "Japan"

Bacopa sp. "Japan"

View details->
Madagascar Bacopa

Madagascar Bacopa

Bacopa madagascariensis

View details->
Bacopa caroliniana

Bacopa caroliniana

Bacopa caroliniana

View details->
Bacopa salzmannii

Bacopa salzmannii

Bacopa salzmannii

View details->
Water Milfoil Bacopa

Water Milfoil Bacopa

Bacopa myriophylloides

View details->
Bacopa australis

Bacopa australis

Bacopa australis

View details->
Bacopa serpyllifolia

Bacopa serpyllifolia

Bacopa serpyllifolia

View details->
Bacopa sp. "Colorata"

Bacopa sp. "Colorata"

Bacopa sp. "Colorata"

View details->
Bacopa crenata

Bacopa crenata

Bacopa crenata

View details->
Bacopa lanigera

Bacopa lanigera

Bacopa lanigera

View details->
Dwarf Ambulia

Dwarf Ambulia

Limnophila sessiliflora

View details->
Gratiola officinalis

Gratiola officinalis

Gratiola officinalis

View details->
Limnophila heterophylla

Limnophila heterophylla

Limnophila heterophylla

View details->

Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

Orange dwarf crayfish (CPO)
Invertebrate

Orange dwarf crayfish (CPO)

Cambarellus patzcuarensis "Orange"

View details->
Ramshorn Snail
Invertebrate

Ramshorn Snail

Planorbella duryi

View details->
Cherry Shrimp
Invertebrate

Cherry Shrimp

Neocaridina davidi

View details->
Montezuma dwarf crayfish
Invertebrate

Montezuma dwarf crayfish

Cambarellus montezumae

View details->
Green babaulti shrimp
Invertebrate

Green babaulti shrimp

Caridina cf. babaulti "Green"

View details->
Swamp dwarf crayfish
Invertebrate

Swamp dwarf crayfish

Cambarellus puer

View details->
Malaysian Trumpet Snail
Invertebrate

Malaysian Trumpet Snail

Melanoides tuberculata

View details->
White Pearl Shrimp
Invertebrate

White Pearl Shrimp

Neocaridina zhangjiajiensis var. White

View details->
Blue Pearl shrimp
Invertebrate

Blue Pearl shrimp

Neocaridina cf. zhanghjiajiensis "Blue Pearl"

View details->
Red Cherry shrimp
Invertebrate

Red Cherry shrimp

Neocaridina davidi "Red"

View details->
White Pearl / Snowball shrimp
Invertebrate

White Pearl / Snowball shrimp

Neocaridina cf. zhangjiajiensis "White Pearl"

View details->
Yellow Fire shrimp
Invertebrate

Yellow Fire shrimp

Neocaridina davidi "Yellow"

View details->
Bronze cory
Fish

Bronze cory

Corydoras aeneus

View details->
Assassin snail
Invertebrate

Assassin snail

Anentome helena

View details->
Black devil snail
Invertebrate

Black devil snail

Faunus ater

View details->
Black helmet nerite
Invertebrate

Black helmet nerite

Neritina pulligera

View details->

Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Limnophila sp. "Sulawesi"

Limnophila sp. "Sulawesi"

Limnophila sp. "Sulawesi"

View details->
Limnophila cf. hippuridoides "Mini"

Limnophila cf. hippuridoides "Mini"

Limnophila cf. hippuridoides "Mini"

View details->
Limnophila hippuridoides

Limnophila hippuridoides

Limnophila hippuridoides

View details->
Limnophila brownii

Limnophila brownii

Limnophila brownii

View details->
Limnophila sp. "Broad"

Limnophila sp. "Broad"

Limnophila sp. "Broad"

View details->
Azolla mexicana

Azolla mexicana

Azolla mexicana

View details->
Cryptocoryne beckettii "Viridifolia"

Cryptocoryne beckettii "Viridifolia"

Cryptocoryne beckettii "Viridifolia"

View details->
Cryptocoryne beckettii

Cryptocoryne beckettii

Cryptocoryne beckettii

View details->
Cryptocoryne beckettii "Petchii"

Cryptocoryne beckettii "Petchii"

Cryptocoryne beckettii "Petchii"

View details->
Gratiola virginiana

Gratiola virginiana

Gratiola virginiana

View details->
Mini Aromatic Limnophila (Limnophila aromatica "Mini")

Mini Aromatic Limnophila (Limnophila aromatica "Mini")

Limnophila aromatica "Mini"

View details->
Gratiola viscidula

Gratiola viscidula

Gratiola viscidula

View details->
Cryptocoryne beckettii "Petchii Pink"

Cryptocoryne beckettii "Petchii Pink"

Cryptocoryne beckettii "Petchii Pink"

View details->
Cryptocoryne affinis

Cryptocoryne affinis

Cryptocoryne affinis

View details->
Limnophila aquatica

Limnophila aquatica

Limnophila aquatica

View details->
Alternanthera reineckii "rosaefolia minor"

Alternanthera reineckii "rosaefolia minor"

Alternanthera reineckii "rosaefolia minor"

View details->
Last updated: 06/30/2026
Bacopa monnieri "Rundblättrig" Care Guide & Tank Setup | Atlarium