Part 45

Antheridia, 34

Archegonia, 34

Alternation of generations, 33

Asexual generation, 34

Frond, 28

Fertile frond, 3

Fertilization, 34

Indusium, 31

Once-pinnate frond, 30

Pinnatifid frond, 29

Pinnæ, 30

Pinnules, 30

Prothallium, 34

Rachis, 30

Rootstock, 28

Sexual generation, 33

Simple frond, 29

Sori, 30

Sporangia, 30

Spore, 30

Sterile frond, 31

Twice-pinnate frond, 30

Veins, free, 30

BOOKS ON GARDEN FIELD AND WOOD

How to Know the Wild Flowers

By MRS. WILLIAM STARR DANA

With 48 colored plates and new black-and-white drawings, enlarged, rewritten, and entirely reset.

A guide to the names, haunts, and habits of our native wild flowers. With 48 full-page colored plates by ELSIE LOUISE SHAW, and 110 full-page illustrations by MARION SATTERLEE. Crown 8vo, $2.00 net.