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This is the fruit of Mockernut, Hicoria alba, (Keeler, 1915).

Mockernut Fruit

This is the fruit of Mockernut, Hicoria alba, (Keeler, 1915).

The Leaf of Akanthos Mollis has broad tips to the leaves.

Leaf of Akanthos Mollis

The Leaf of Akanthos Mollis has broad tips to the leaves.

The Leaf of Akanthos Mollis has broad tips to the leaves.

Leaf of Akanthos Mollis

The Leaf of Akanthos Mollis has broad tips to the leaves.

Piece of a flowering-stem of Moneywort with single flower successively produced in the axils of the leaves, from below upwards, as the stem grows on.

Moneywort

Piece of a flowering-stem of Moneywort with single flower successively produced in the axils of the…

Monkey's Comb: "Fruit of Apeiba aspera." -Lindley, 1853

Monkey's Comb

Monkey's Comb: "Fruit of Apeiba aspera." -Lindley, 1853

"Cocculus macrocarpus. 1. male flower; 2. a petal and stamen; 3. a cluster of fruit; 4. seed; 5. section of ditto showing embryo." -Lindley, 1853

Moonseed

"Cocculus macrocarpus. 1. male flower; 2. a petal and stamen; 3. a cluster of fruit; 4. seed; 5. section…

The open spread part of the flower is very thin, and the ribs are to it what the whalebones are to an umbrella (Hooker, 1886).

Morning Glory

The open spread part of the flower is very thin, and the ribs are to it what the whalebones are to an…

border of morning glory

Morning Glory

border of morning glory

Corolla of Morning Glory laid open, to show the five stamens inserted on it, near the base.

Morning Glory

Corolla of Morning Glory laid open, to show the five stamens inserted on it, near the base.

The flower part of this bud is twisted at its point end in a spiral manner.

Morning Glory Bud

The flower part of this bud is twisted at its point end in a spiral manner.

The flower part of this bud is twisted at its point end in a spiral manner. This bud is partially closed.

Morning Glory Bud

The flower part of this bud is twisted at its point end in a spiral manner. This bud is partially closed.

Embryo taken out whole and unfolded; the broad and very thin cotyledons notched at summit; the caulicle below.

Morning Glory Embryo

Embryo taken out whole and unfolded; the broad and very thin cotyledons notched at summit; the caulicle…

Seed of Morning Glory divided, moderately magnified; shows a longitudinal section through the centre of the embryo as it lies crumpled in the albumen.

Morning Glory Seed

Seed of Morning Glory divided, moderately magnified; shows a longitudinal section through the centre…

Seedling of Morning Glory more advanced (root cut away); cotyledons well developed into foliage-leaves: succeeding internode and leaf well developed, and the next forming.

Morning Glory Seedling

Seedling of Morning Glory more advanced (root cut away); cotyledons well developed into foliage-leaves:…

Morning Glory seedling advanced.

Morning Glory Seedling Advanced

Morning Glory seedling advanced.

The flower and plant of the moschatel or Adoxa moschatellina, a flowering plant in the Adoxaceae family.

Moschatel

The flower and plant of the moschatel or Adoxa moschatellina, a flowering plant in the Adoxaceae family.

The leaf of the Mountain Holly, Ilex monticola, (Keeler, 1915).

Mountain Holly Leaf

The leaf of the Mountain Holly, Ilex monticola, (Keeler, 1915).

The seeds of the Mountain Maple, Acer spicatum, (Keeler, 1915).

Mountain Maple Seed

The seeds of the Mountain Maple, Acer spicatum, (Keeler, 1915).

"Turn table for cementing coverglasses to slides. For use where the mounting medium is glycerine or glycerine jelly." -Stevens, 1916

Mounting Plant Sections

"Turn table for cementing coverglasses to slides. For use where the mounting medium is glycerine or…

Mucor caninus is a species of mold found in soil, on plant surfaces, and rotting vegetables.

Mucor caninus

Mucor caninus is a species of mold found in soil, on plant surfaces, and rotting vegetables.

The Mulberry contains masses of simple fruits belonging to different flowers, compacted together,(Gray, 1858).

Mulberry

The Mulberry contains masses of simple fruits belonging to different flowers, compacted together,(Gray,…

The fruit is a multiple fruit, 2-3 cm long, red ripening to dark purple, edible, and sweet with a good flavor in several species.

Mulberry

The fruit is a multiple fruit, 2-3 cm long, red ripening to dark purple, edible, and sweet with a good…

One of the grains younger, seen to be a pistillate flower with calyx becoming fleshy.

Mulberry Grains

One of the grains younger, seen to be a pistillate flower with calyx becoming fleshy.

"Morus alba. 1. A male flower; 2. clusters of females; 3. a female flower separate; 4. the same with a part of the calyx cut away; 5. a vertical section of a ripe achaenium; 6. a cluster of fruit consisting of succulent calyxes enclosing achaenia." -Lindley, 1853

White Mulberry

"Morus alba. 1. A male flower; 2. clusters of females; 3. a female flower separate; 4. the same with…

"Mullein (Verbascum Thapsus). L, cross-section of leaf-blade, showing relative thickness of a layer of epidermal hairs; H, a single hair from a leaf." -Gager, 1916

Mullein Leaf

"Mullein (Verbascum Thapsus). L, cross-section of leaf-blade, showing relative thickness of a layer…

"Eugenia tuberculata. 1. a flower; 2. the same divided vertically; 3. a stamen; 4. a ripe fruit; 5. a leaf with the dots upon it." -Lindley, 1853

Myrtle

"Eugenia tuberculata. 1. a flower; 2. the same divided vertically; 3. a stamen; 4. a ripe fruit; 5.…

"1. twig of Myrtus communis; 2. a flower divided divided perpendicularly." -Lindley, 1853

Myrtle

"1. twig of Myrtus communis; 2. a flower divided divided perpendicularly." -Lindley, 1853

"Napoleona imperialis. 1. a flower-bud just expanding; 2. the fleshy cup, and table-shaped stigma; 3. an expanded flower of the natural size; 4. a perpendicular section of the same. (In this the artist has carelessly added a fourth ring to the corolla on the outside of the stamens; no such ring exists); 5. a perpendicular section of the ovary; 6. an ovule; 7. a ripe seed; 8. a stamen; 9. a transverse section of the ovary." -Lindley. 1853

Napoleon's Hat

"Napoleona imperialis. 1. a flower-bud just expanding; 2. the fleshy cup, and table-shaped stigma; 3.…

the narcissus has a little cup in the middle of it.

Narcissus

the narcissus has a little cup in the middle of it.

"Flower of Tropaeolum majus showing the spur." -Lindley, 1853

Garden Nasturtium

"Flower of Tropaeolum majus showing the spur." -Lindley, 1853

"Chymocarpus pentaphyllus; 2. a longitudinal section of its flower; 3. ovary of Tropaeolum majus; 4. a vertical section of a carpel, showing the position of the ovule; 5. a perpendicular section of a seed." -Lindley, 1853

Ladies' Legs Nasturtium

"Chymocarpus pentaphyllus; 2. a longitudinal section of its flower; 3. ovary of Tropaeolum majus; 4.…

This shows a needle-shaped leaf.

Needle-Shaped Leaf

This shows a needle-shaped leaf.

Enlarged and top-shaped receptacle of Nelumbium, at maturity.

Nelumbium

Enlarged and top-shaped receptacle of Nelumbium, at maturity.

Fruit of Nelumbo, (Gray, 1858).

Nelumbo

Fruit of Nelumbo, (Gray, 1858).

Leaf of Nepenthes; foliage, tendril, and pitcher combined.

Nepenthes

Leaf of Nepenthes; foliage, tendril, and pitcher combined.

"Branch of Procris splendens; 2. cluster of male and female flowers; 3. a male flower about to expand; 4. the same expanded." -Lindley, 1853

Nettlewort

"Branch of Procris splendens; 2. cluster of male and female flowers; 3. a male flower about to expand;…

New Zealand Flax is a liliaceous plant bearing tough, radical leaves, usually about four feet in length. in early autumn, it bears large, reddish or yellow flowers, with tubular perianths. The plant yields a valuable fiber which is stripped by machinery and used for making baskets, ropes, etc. This illustration shows fruit of New Zealand Flax

New Zealand Flax (Fruit)

New Zealand Flax is a liliaceous plant bearing tough, radical leaves, usually about four feet in length.…

New Zealand Flax is a liliaceous plant bearing tough, radical leaves, usually about four feet in length. In early autumn it bears large, reddish or yellow flowers, with tubular perianths. The plant yields a valuable fiber which is stripped by machinery and used for making baskets, ropes, etc. This illustration shows flowers of the New Zealand Flax.

New Zealand Flax (Flowers)

New Zealand Flax is a liliaceous plant bearing tough, radical leaves, usually about four feet in length.…

Nodules on the root system of a hairy vetch.

Nodules, root

Nodules on the root system of a hairy vetch.

This is a classification of a type of fruit.

Nut

This is a classification of a type of fruit.

This is the nut of the Theobroma Cacao plant (chocolate).

Cacao Nut

This is the nut of the Theobroma Cacao plant (chocolate).

"Myristica fragrans. 1. a flower; 2. a column of stamens; 3. a section of a female showing the ovary and ovule; 4. a section of a nutmeg with the embryo at the base of the albumen." -Lindley, 1853

Nutmeg

"Myristica fragrans. 1. a flower; 2. a column of stamens; 3. a section of a female showing the ovary…

"Acorn and cupule of Quercus Skinneri, natural size; 2. cross section of the acorn, showing the lobed embryo." -Lindley, 1853

Acorn

"Acorn and cupule of Quercus Skinneri, natural size; 2. cross section of the acorn, showing the lobed…

"Cross-sections of leaves of an oak (Quercus novimexicana), showing the effect of different light conditions on the internal anatomy. 1, from leaf growing in sunlight; 2, from leaf growing in the shade." -Gager, 1916

Oak Leaf Cross-Section

"Cross-sections of leaves of an oak (Quercus novimexicana), showing the effect of different light conditions…

This shows a sprouting acorn (Keeler, 1915).

Acorn

This shows a sprouting acorn (Keeler, 1915).

An oat seed.

Oat seed

An oat seed.

An oat seed embryo.

Oat seed embryo

An oat seed embryo.

A longitudinal section of an oat seed.

Cross-section of an oat seed

A longitudinal section of an oat seed.

A cross-section of an oat seed.

Cross-section of oat seed

A cross-section of an oat seed.

This shows an oblanceolate leaf.

Oblanceolate Leaf Shape

This shows an oblanceolate leaf.

"Ochna dubia. 1. expanded flower; 2. section of pistil and stamens; 3. pistil; 4. section of a ripe carpel." -Lindley, 1853

Ochna

"Ochna dubia. 1. expanded flower; 2. section of pistil and stamens; 3. pistil; 4. section of a ripe…

"Ochranthe arguta. 1. grain of pollen; 2. perpendicular section of its pistil." -Lindley, 1853

Ochranthe

"Ochranthe arguta. 1. grain of pollen; 2. perpendicular section of its pistil." -Lindley, 1853

"Flowering Branch of Oleaster (Elaeagnus angustifolia). a, fruit; b, section of same." -Whitney, 1911

Oleaster

"Flowering Branch of Oleaster (Elaeagnus angustifolia). a, fruit; b, section of same." -Whitney, 1911

Section of an Onion-seed, showing the slender and the coiled embryo in the albumen.

Onion Seed

Section of an Onion-seed, showing the slender and the coiled embryo in the albumen.

Four cells from dried Onion-peel, each holding a crystal of different shape, one of them twinned.

Onion-Peel

Four cells from dried Onion-peel, each holding a crystal of different shape, one of them twinned.

Hypogenous disk in Orange.

Orange

Hypogenous disk in Orange.

This shows an orbicular leaf.

Orbicular Leaf Shape

This shows an orbicular leaf.

"Section of capsule of Ophrys apifera" (Bee Orchid). -Lindley, 1853

Bee Orchid Capsule

"Section of capsule of Ophrys apifera" (Bee Orchid). -Lindley, 1853

"Column of Orchis mascula" (Early Purple Orchid). -Lindley, 1853

Early Purple Orchid Column

"Column of Orchis mascula" (Early Purple Orchid). -Lindley, 1853

"Apostasia odorata; 1. a flower; 2. the stamens and style; 3. a cross section of the ovary; 4. a seed." -Lindley, 1853

Apostasia Orchid

"Apostasia odorata; 1. a flower; 2. the stamens and style; 3. a cross section of the ovary; 4. a seed."…