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Alsophila (Upwards of ninety species have)

Upwards of ninety species have been referred to this genus. To those described on pp. 54-6, Vol. I., the following variety should now be added:

A. atrovirens Keriana (Ker's dark green). sti. 6in. to 8in. long, dull brown, muricated. fronds oblong-lanceolate, bipinnate, 1 1/4in. to 1 1/2in. long, 6in. broad, firm, pilose on the main veins beneath; pinnae lanceolate, the lower ones 3in. to 4in. long, 3/4in. to 1in. broad, cut down to the rachis into oblong, crenate, obtuse pinnules. sori placed at the forking of the veins. 1884. Stove.