List of Illustrations. 
THE OAK FERN. Phegopteris Dryopteris. Frontispiece. 
; PAGE, 
A CROSIER., . . . . . . . . . . 12 
FLOWERING FERN. . . ° ° . * . . 15 
SORI OF ASPLENIUM. ° . . . . . . . 16 
SORI OF POLYPODIUM. . . . . . . . . 7 
35 FIDDLE-HEADS ” . . . . . . . ° Jacing 18 
A WAYSIDE SPRING. - . . . . . . ° . 20 
CINNAMON FERN. Osundacinnamomea, a . ‘ JSacing 26 
A FRUITING PINNA. — - . : 5 . . A . . 27 
TUFT OF WOOL AT BASE OF PINNA. . . . . . . 28 
HE CINNAMON FERN. Ositunda cinnamomea, a . . Sacing 2 
INTERRUPTED FERN. Osunda Claytoniana. . r i Jacing 30 
INTERRUPTED FERN. Osatunda Claytoniana. Fertile frond ee . 31 
THE INTERRUPTED FERN. Osmunda Claytoniana. . i . Jacing 32 
FLOWERING FERN. Osieunda regalis. . si . . % Sacing 34 
SPORE-CASES. ‘ . f ‘ Ps s . - P 34 
CROSIERS. ‘ . A : 5 : é z : é 35 
FLOWERING FERN. Osmunda regalis. . : . . . Sacing 36 
SPORANGIA, - . . é fs . . . . 42 
RATTLESNAKE FERN, Sotrychium Virginianum. . é ‘ Sacing 42 
RATTLESNAKE FERN. Sotrychiun: Virginianunt, 5 5 ° 44 
ADDER’S-TONGUE, Ofhioglossum vulgatum, E . . ‘ 46 
THE ADDER’S-TONGUE. Ofhioglossum vulgatum, Pilate I. ‘ Sacing 46 
“THEREISANHERB”  . ; ; : : 2 ; facing 50 
MOONWORT. Sotrychium Lunaria. j ‘ is . . ‘ 52 
COMMON GRAPE FERN. Setrychium obliquum. . . B . 56 
BOTRYCHIUM OBLIQUUM DISSECTUM . . . . ° . 57 
LITTLE GRAPE FERN. Botrychium simplex.  . . 5 : 58 
LANCE-LEAVED GRAPE FERN, Sotrychium lanceolatum. . . 59 
THE MATRICARY GRAPE FERN. 2otrychium matricariafolium, Plate II facing 60 
MATRICARY GRAPE FERN, Sotrychium matricariafolium. . 3 S 6r 
