Part 2

Yellow dock 15

Broad-leaved dock 16

Yellow-rooted water dock 18

Dock roots 18

Couch grass 19

Pokeweed 20

Foxglove 22

Mullein 24

Lobelia 26

Tansy 27

Gum plant 28

Scaly grindelia 29

Boneset 30

Catnip 31

Hoarhound 32

Blessed thistle 34

Yarrow 35

Canada fleabane 36

Jimson weed 37

Purple thorn-apple 39

Poison hemlock 39

American wormseed 41

Black mustard 42

White mustard 44

ILLUSTRATIONS.

Page.

Fig. 1. Burdock, flowering plant 11

2. Burdock, first year’s growth 12