This plant is sourced from Tropica Aquarium plants.  It is similar to Marsilea Crenata, but has larger leave size and developes different types of leaves.  Here is the description of this plant from Tropica:

Marsilea hirsuta is a carpet-plant from Australia. A fascinating plant, usually delivered with leaves like a four-leaf clover. After a transitional period it develops different types of leaves, possibly a low form with single leaves like a large Glossostigma, or alternatively develop two, three or four-lobed leaves varying in height (from 2-10 cm), depending on the growth conditions. Whichever form the plant adopts, it forms runners and spreads rapidly round the aquarium. 

INSTRUCTION:

• Type: Carpeting
• Origin: Australia
• Growth Rate: Medium
• Height: 5-20+ cm
• Light Demand: Low
• CO2: Low

Attention! Please read the following important notes before ordering any live plants:

For all customers outside of California, please do not order plants via UPS Ground shipping or USPS first class mail, there is a very high chance they will not make it alive.  No live arrival guarantee for USPS first class, UPS ground, and Fedex ground.  USPS priority mail is guaranteed with 50% refund/credit.  Although USPS priority mail is the most popular and ships fine in most cases, occasionally it could get mishandled or delayed, so please order at your own risk.

*Please refer to  Return Policy on our home page for more details of our Live plants guarantee policy before you make the purchase.

Due to the fact that live plants are highly perishable, we strongly recommend the purchase of thermal bag and cold pack set ($5 each) with each plant order value under $50 (not including shipping).

We will include the thermal bag and cold pack set for FREE if each plant order exceeds $50 (Free shipping over $50).