Microsorum pteropus on Pterocarpus wood -[L] 10cm refers to a Large (10cm long) piece of natural Pterocarpus driftwood that comes pre-attached with Java Fern (Microsorum pteropus). This plug-and-play aquascaping feature provides an instant, mature look to freshwater aquariums without the need for manual planting. 
Overview & Placement
Scientific Name: Microsorum pteropus (Java Fern)
Size: Large (L) ~10 cm wood base, with plant fronds typically extending 15–30 cm tall.
Placement: Perfect for the midground to background of medium-to-large aquariums (50 liters and above).
Installation: Ready to place. Simply rinse it in fresh water and place it directly into your aquarium. Do not bury the horizontal rhizome in the substrate, as it will rot and kill the plant. 
Care Requirements
Java Fern is widely celebrated as one of the hardiest and most beginner-proof aquatic plants in the hobby. 
Lighting: Low to moderate. It thrives in low-light setups and can easily grow in standard room lighting or shaded areas of the tank.  
CO2 & Nutrients: Not required. It grows well without carbon dioxide injection. However, it benefits from occasional liquid water column fertilizers, as it pulls its nutrients straight from the water. 
Water Conditions: Temperature of 22–28°C (72–82°F), with a highly adaptable pH tolerance spanning 5.0–8.0.