DRYOPTERIS. An enormous group of ferns, well scattered over the globe, with few common features recognizable by anyone but a professional botanist. The following should give some impression of their diversity. Culture and hardiness as shown.
erythrosora. Autumn fern. A hardy evergreen species, with rhizomes branching freely to produce compact colonies. The fronds are about 2 tall, bronze to red in new growth changing to dark green when mature, and polished in surface. A fine container plant, though it will need periodic division to relieve overcrowding. Light to medium shade, most soils, regular watering. Hardy to below 0oF.