This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A curious Urticaceous plant, with slender stems and small roundish bright-green leaves produced in such density as to make a pretty evergreen carpet in the greenhouse border, or when grown in pots. It grows rapidly, and soon spreads itself everywhere under glass. It is a native of Corsica and Sardinia, and is almost hardy in places.