15. 
PTERIS CRITICA ALBO-LINEATA. 
Sterile fronds 9 to 12 inches long, fertile fronds 12 to 18 inches long, each 
pinnae has a broad band of white in the centre. The small engravings, 1 and 2 
represent a portion of the upper and lower surfaoe of a fertile frond. Native 
of Japan. A greenhouse fern. 
PTERIS LEPTOPHYLLA. 
Fronds 8 to 14 inches long, the pinnae of the sterile fronds are finely 
serrated. The small engravings, 1 and 2, represent the upper and lower surface 
of a portion of a fertile frond. Native of Brazil. A stove fern. 
PTERIS LONGIFOLIA. 
Fronds 12 to 24 inches long of a pale green, and coated with white hairs, 
the fronds springing from a creeping rhizome, the small engravings, 1 and 2, 
represent the upper and lower surface of a pinnae. Found all over the Tropics. 
A greenhouse fern. 
PTERIS PALMATA. 
Fronds 6 to 12 inches long, stem and mid-rib black, stem polished, the 
small engraving No. 1 represents a portion of the upper surface of a sterile 
frond, and 2 the lower surface of part of a fertile frond. Native of America, 
W est Indies and Peru. A greenhouse fern. 
PTERIS SAGITTIFOLIA. 
Fronds 6 to 9 inches long, mid-rib and stem black and polished. The 
small engravings 1 and 2 represent the upper and lower surface of a frond. 
Native of Brazil. A stove fern. 
PTERIS SCALEMLA. 
Fronds 12 to 18 inches long, springing from a black, creeping rhizome. 
The small engravings, 1 and 2, represent a portion of the upper and lower 
surface of a frond. Native of New Zealand. A green-house fern. 
