POLYPODIUM FRAXINIFOLIUM. 
Fronds 12 to 24 inches long, the stems and mid-rib brownish purple. The 
small engraving 1 represents a portion of a frond, and 2 a smaller portion at a 
larger scale. Native of Tropical America. A stove fern. 
POLYPODIUM IIETERACTIS. 
Fronds 6 to 9 inches high and 2 inches wide, underside and stem are 
covered entirely over with white cottony substance, the fronds springing from a 
creeping brown rhizome. The small engraving 1 represents the upper surface of 
a frond. 2, a small portion at a larger scale. Native of Ceylon. A stove fern. 
POLYPODIUM MU SiEFOLIUM . 
Fronds 12 to 36 inches long and 3 to 4 inches broad light green, veins 
dark green, fronds springing from a creeping rhizome. The small engraving 1 
represents a portion of a frond, 2 the apex of a frond. Native of the Malay 
Islands. 
POLYPODIUM PLUMULA. 
Fronds 12 to 18 inches long, and 1J to 2J inches broad, mid-rib and stem 
green, changing to purplish brown at base. The small engravings, 1 and 2, 
represent the upper and lower surface of one of the pinnaes. Native of Tropical 
America. A stove fern. 
POLYPODIUM RIGIDUM. 
Fronds 10 to 20 inches long and nearly three-quarters of an inch broad 
springing from a slightly creeping rhizome. The small engraving 1 represents 
the shape of one of the fronds, and 2 a portion of the underside of one of the 
fronds. Native of America. A stove fern. 
POLYPODIUM RUPESTRIS. 
Sterile fronds 1J to 2 inches long, fertile fronds 3 to 4 inches long. The 
under surface of the fronds are covered with a white cottony substance. The 
fronds spring from a creeping rhizome, which is covered with brown scales. 
The small engraving 1 represents the upper surface of a sterile pinnae and 2 the 
underside of a fertile pinnae. Native of Australia and New Zealand. A 
greenhouse fern. 
