Micranthemum umbrosum

Shade mudflower

Aquarium suitability: yes
Usage: Midground, Nano tanks, Foreground, group
Difficulty: medium
Growth: fast
Range and localities: 

southeastern USA, Central and South America

Common names: 
  • Shade mudflower
  • Baby tears

  • Anonymos umbrosa Walter
  • Globifera orbiculatum Michx.
  • Globifera umbrosa J. F. Gmel.
  • Globifera umbrosa Walter
  • Micranthemum orbiculatum Michx.

Habit, plant type:

  • stem
Botanical name [?]: Micránthemum umbrósum (J. F. Gmel.) S. F. Blake

Major group (unranked): Seed plants: Flowering plants (Angiosperms)
Order: Lamiales
Family: Linderniaceae
Genus: Micranthemum


Micranthemum umbrosum is native to most southeastern US states, from Texas to Florida and Virginia, where it grows in ponds, ditches and rivulets, in many areas it is emersed in summer and submersed in winter. It is also found in parts of Central and South America.
The Shade mudflower may be known in the hobby for quite some time, but has gained popularity recently since aquaria that meet this plant's requirements have become more common.

Sometimes M. umbrosum has difficulties adapting to a new environment, but once acclimated it is not a very demanding plant, apart from its hunger for light. A relatively strong lighting of at least 0.5 W/L is required for good growth. A lack of light results in the plant throwing off its lower leaves, or in holey leaves. At the same time, the stems become brittle and tends to break, so small pieces of the plant drift to the surface where light is more intensive. This plant may be cultivated without additional CO2 injection, however, its growth rate decreases significantly, and the leaves grow smaller.

If the basic requirements of M. umbrosum are met, it is really easy to propagate. Just cut off a main shoot somewhere on the stem and re-plant it in the substrate, it will grow new roots very quickly and form a stand-alone plant after a very short time. M. umbrosum tends to throw a large number of new lateral shoots, which develop in the leaf axils some centimetres below the top of a main shoot. If you cut back the plant you can further this development even more, and by frequent trimming you can create rather dense plant mats.
Emersed cultivation can further the growth rate even more, however, very moist air and a wet substrate are necessary for that. If these requirements are met, the plant grows quite profusely, and in its leaf axils, tiny white flowers develop, which look a lot like those of Hemianthus species.

M. umbrosum is usually planted in the middle- or background of an aquascape. Extremely strong lighting may induce it to grow rather flattish and creeping, then it can also be used in the foreground of the aquarium.

Light medium to high 
Temperature tolerance 4 to 26 °C
Optimum temperature 22 to 24 °C
Carbonate hardness 0 to 10 °dKH
pH value 5 to 7 
Carbon dioxide (CO2) 20 to 40 mg/l
Nitrate (NO3-) 10 to 50 mg/l
Phosphate (PO43-) 0.1 to 3 mg/l
Potassium (K+) 5 to 30 mg/l
Iron (Fe) 0.01 to 0.5 mg/l

Growth: fast

Propagation: Cuttings, Splitting, cutting off daughter plants

Can grow emersed?: yes

Suited for outdoor cultivation / ponds: unknown

Winter hardiness: unknown

There is no detailled information for cultivating this plant yet.
Aquascaping: well-branched, bushy

There are no images in this gallery.
You can embed this entry directly into another web site or forum. Just copy and paste the following code:

Embed as HTML code

<a href="" target="_blank"><img alt="Micranthemum umbrosum" title="Micranthemum umbrosum" src="" /></a>

Embed as BB code


Embed in Flogrow Forum

[widget=aquaticplants/micranthemum-umbrosum]Micranthemum umbrosum[/widget]


There are no reviews so far. Do you want to write the first one?
TODO Micranthemum umbrosum is also known as Shade mudflower and Baby tears. TODO

Wasserpflanzen sind ein fester Bestandteil der meisten Aquarien. Beim Aquascaping, dem Naturaquarium, Biotop-Aquarium oder dem Gesellschaftsaquarium sind Wasserpflanzen nicht nur für die Wasserqualität entscheidend, sondern sorgen auch stets für eine optische Aufwertung des Aquariums.