ClipArt ETC
A spore-case from the Walking-Fern, Camptosorus, just bursting by the partial straightening of the incomplete ring.

Walking-Fern

A spore-case from the Walking-Fern, Camptosorus, just bursting by the partial straightening of the incomplete…

Three spores from the Walking-Fern, Camptosorus.

Walking-Fern

Three spores from the Walking-Fern, Camptosorus.

"Cheiranthus cheiri; 2. its stigma; 3. the same with one valve off; 4. a cross section of a seed; 5. a diagram to illustrate the position of the parts of the flower." -Lindley, 1853

Aegean Wallflower

"Cheiranthus cheiri; 2. its stigma; 3. the same with one valve off; 4. a cross section of a seed; 5.…

A weeder used for harrowing small grains.

Weeder

A weeder used for harrowing small grains.

Samara or key of the White Ash, winged at end.

White Ash

Samara or key of the White Ash, winged at end.

This is the staminate flower of White Ash, Fraxinus americana, (Keeler, 1915).

White Ash Flower

This is the staminate flower of White Ash, Fraxinus americana, (Keeler, 1915).

This is the pistillate flower of White Ash, Fraxinus americana, (Keeler, 1915).

White Ash Flower

This is the pistillate flower of White Ash, Fraxinus americana, (Keeler, 1915).

This is the fruit, or samara, of White Ash, Fraxinus americana, (Keeler, 1915).

White Ash Fruit

This is the fruit, or samara, of White Ash, Fraxinus americana, (Keeler, 1915).

This shows the pendulous strobiles, or fruit, of the White Birch, Betula populifolia, (Keeler, 1915).

White Birch Fruit

This shows the pendulous strobiles, or fruit, of the White Birch, Betula populifolia, (Keeler, 1915).

This is the flowering spray of White Elm, Ulmus americana, (Keeler, 1915).

White Elm Flowers

This is the flowering spray of White Elm, Ulmus americana, (Keeler, 1915).

These are the fruit, or samara, of White Elm, Ulmus americana, (Keeler, 1915).

White Elm Fruit

These are the fruit, or samara, of White Elm, Ulmus americana, (Keeler, 1915).

These are the unfolding leaves of White Elm, Ulmus americana, (Keeler, 1915).

White Elm Leaves

These are the unfolding leaves of White Elm, Ulmus americana, (Keeler, 1915).

This shows the cluster of five leaves of the White Pine, Pinus strobus, (Keeler, 1915).

White Pine Needles

This shows the cluster of five leaves of the White Pine, Pinus strobus, (Keeler, 1915).

Seed of White Water-Lily, enclosed in its aril.

White Water-Lily

Seed of White Water-Lily, enclosed in its aril.

Small portion of epidermis of the lower face of a White-Lily leaf, with stomata, in the closed state.

White-Lily

Small portion of epidermis of the lower face of a White-Lily leaf, with stomata, in the closed state.

Small portion of epidermis of the lower face of a White-Lily leaf, with stomata open.

White-Lily

Small portion of epidermis of the lower face of a White-Lily leaf, with stomata open.

"Apodytes dimidiata. 1. a flower; 2. a corolla spread open; 3. a pistil; 4. section of an ovary; 5. section of ripe fruit." -Lindley, 1853

White-Pear

"Apodytes dimidiata. 1. a flower; 2. a corolla spread open; 3. a pistil; 4. section of an ovary; 5.…

This shows the staminate flower of the Willow, (Keeler, 1915).

Willow Flower

This shows the staminate flower of the Willow, (Keeler, 1915).

This shows the pistillate flower of the Willow, (Keeler, 1915).

Willow Flower

This shows the pistillate flower of the Willow, (Keeler, 1915).

These are the fruit, or samara, of Winged Elm, Ulmus alata, (Keeler, 1915).

Winged Elm Fruit

These are the fruit, or samara, of Winged Elm, Ulmus alata, (Keeler, 1915).

"Pyrola chlorantha. 1. a pistil; 2. an anther; 3. seeds; 4. a seed much more magnified; 5. a section of the nucleus showing the embryo." -Lindley, 1853

Green-Flowered Wintergreen

"Pyrola chlorantha. 1. a pistil; 2. an anther; 3. seeds; 4. a seed much more magnified; 5. a section…

Separate whole wood-cell

Wood-cell

Separate whole wood-cell

Separate whole wood-cell with both sections repesented: <em>a</em>, disks in section, <em>b</em>, in face.

Wood-cell

Separate whole wood-cell with both sections repesented: a, disks in section, b, in…

This shows the erect strobile, or fruit, of the Yellow Birch, Betula lutea (Keeler, 1915).

Yellow Birch Fruit

This shows the erect strobile, or fruit, of the Yellow Birch, Betula lutea (Keeler, 1915).

Roots of Yellow Gerardia, some attached to and feeding on the root of Blueberry-bush.

Yellow Gerardia

Roots of Yellow Gerardia, some attached to and feeding on the root of Blueberry-bush.

This shows the cluster of two leaves, sometimes three of four, of the Yellow Pine, Pinus echinata, (Keeler, 1915).

Yellow Pine Needles

This shows the cluster of two leaves, sometimes three of four, of the Yellow Pine, Pinus echinata, (Keeler,…

"Zizyphus Baclei. 1. a flower seen from above; 2. a fruit; 3. the same cut vertically; 4. a seed divided vertically." -Lindley, 1853

Ziziphus

"Zizyphus Baclei. 1. a flower seen from above; 2. a fruit; 3. the same cut vertically; 4. a seed divided…