Gland(g) from the upper surface of the leaf of lilac: e, epidermis, c, cuticle, p, palisade cells.

Gland

Gland(g) from the upper surface of the leaf of lilac: e, epidermis, c, cuticle, p, palisade cells.

Nectar gland in the ovary of day lily.

Nectar Gland

Nectar gland in the ovary of day lily.

This is a classification of a type of fruit.

Glans

This is a classification of a type of fruit.

"1. a portion of the spike of Salicornia herbacea, with the flowers lodged in the notches of the axis; 2. a flower separate." -Lindley, 1853

Glasswort

"1. a portion of the spike of Salicornia herbacea, with the flowers lodged in the notches of the axis;…

"Globularia orientalis. 1. a flower; 2. section of calyx and ovary; 3. section of fruit." -Lindley, 1853

Globe Daisy

"Globularia orientalis. 1. a flower; 2. section of calyx and ovary; 3. section of fruit." -Lindley,…

"Globe-flower (Trollius Europaeus). The Trollius Europaeus, a ranunculaceous plant of Great Britain and the mountains of central Europe, with deeply lobed leaves and pale-yellow flowers." -Whitney, 1911

Globe Flower

"Globe-flower (Trollius Europaeus). The Trollius Europaeus, a ranunculaceous plant of Great Britain…

Glomerate crystal in a cell, from Beet-root.

Glomerate crystal

Glomerate crystal in a cell, from Beet-root.

"Flower of Gloriosa superba. GLORIOSA. A genus of tuberous-rooted liliaceaous plants, with opposite or whorled leaves terminating in tendrils by which they climb, and with large and beautiful red or yellows flowers. There are three species, of tropical Asia and Africa, cultivated in greenhouses." -Whitney, 1911

Gloriosa

"Flower of Gloriosa superba. GLORIOSA. A genus of tuberous-rooted liliaceaous plants, with opposite…

"Eccremocarpus scaber. 1. cross section of its ovary; 2. longitudinal section of it; 3. seed." -Lindley, 1853

Glory Vine

"Eccremocarpus scaber. 1. cross section of its ovary; 2. longitudinal section of it; 3. seed." -Lindley,…

"1. flower of Spiraea Aruncus cut open; 2. a section of one of its carpels." -Lindley, 1853

Goat's Beard

"1. flower of Spiraea Aruncus cut open; 2. a section of one of its carpels." -Lindley, 1853

Garden Gooseberry with fruit.

Gooseberry

Garden Gooseberry with fruit.

Cup of the calyx laid open.

Gooseberry

Cup of the calyx laid open.

Berry of the Garden Gooseberry cut in half.

Gooseberry

Berry of the Garden Gooseberry cut in half.

Berry of the Garden Gooseberry cut in half.

Gooseberry

Berry of the Garden Gooseberry cut in half.

"Flower of Gordonia pubescens. GORDONIA. A ternstroemiaceous genus, of two species, very ornamental evergreen shrubs or small trees of the southern United States, with large white flowers." -Whitney, 1911

Gordonia

"Flower of Gordonia pubescens. GORDONIA. A ternstroemiaceous genus, of two species, very ornamental…

A twig of the grape-vine.

Grape-vine

A twig of the grape-vine.

A large and a smaller dotted duct from Grape-Vine.

Grape-Vine

A large and a smaller dotted duct from Grape-Vine.

The leaf of the Grapefruit tree (Citrus decumana) in the Rutaceae family of rues or citrus.

Grapefruit Leaf

The leaf of the Grapefruit tree (Citrus decumana) in the Rutaceae family of rues or citrus.

"Vitis vinifera. 1. a flower; 2. the same casting its petals; 3. the pistil and stamens; 4. a section of the ovary; 5. of the seed." -Lindley, 1853

Common Grapevine

"Vitis vinifera. 1. a flower; 2. the same casting its petals; 3. the pistil and stamens; 4. a section…

"Graminae. Flower of a Grass, the glumes are removed. GRAMINAE. In botany, the largest order among endogenous plants except the orchids." -Whitney, 1911

Grass Flower

"Graminae. Flower of a Grass, the glumes are removed. GRAMINAE. In botany, the largest order among endogenous…

"Graminae. Flower of a Grass. GRAMINAE. In botany, the largest order among endogenous plants except the orchids." -Whitney, 1911

Grass Flower

"Graminae. Flower of a Grass. GRAMINAE. In botany, the largest order among endogenous plants except…

"Diagram of inflorescence of a grass. g, sterile glumes; P1, a flowering glume; P2, a scaly bract (palea); e, transparent scales (lodicules) at the base of the flower; B, the flower." -Bergen, 1896

Grass Inflorescence

"Diagram of inflorescence of a grass. g, sterile glumes; P1, a flowering glume; P2, a scaly bract (palea);…

Blue grass showing the method of reproduction by underground stems, or stolons.

Blue grass

Blue grass showing the method of reproduction by underground stems, or stolons.

"Fescue-grass (Festuca pratensis). A, spikelet; B, a flower, the lodicules in front and the palea behind; C, a lodicule; D, ovary." -Bergen, 1896

Fescue Grass

"Fescue-grass (Festuca pratensis). A, spikelet; B, a flower, the lodicules in front and the palea behind;…

This shows the cluster of two leaves of the Gray Pine, Pinus divaricata, (Keeler, 1915).

Gray Pine Needles

This shows the cluster of two leaves of the Gray Pine, Pinus divaricata, (Keeler, 1915).

The Spider-Net Grevillea is a small shrub in the Proteaceae. "Flowering Branch of Grevillea Thelemanniana." -Whitney, 1911

Spider-Net Grevillea

The Spider-Net Grevillea is a small shrub in the Proteaceae. "Flowering Branch of Grevillea Thelemanniana."…

"1. Spore-case of Lycopodium denticulatum opened; 2. antheridium; 3. spore." -Lindley, 1853

Ground Pine

"1. Spore-case of Lycopodium denticulatum opened; 2. antheridium; 3. spore." -Lindley, 1853

"Flowering branch of Guaco (Mikania guaco). GUACO. The Mikania Guaco, a climbing composite of tropical America; also a medicinal substance consisting of, or an aromatic bitter obtained from, the leaves of this plant." -Whitney, 1911

Guaco Branch

"Flowering branch of Guaco (Mikania guaco). GUACO. The Mikania Guaco, a climbing composite of tropical…

Section of the fruit of the Apple Guava (Psidium guayava), a small tree in the Myrtaceae family.

Apple Guava

Section of the fruit of the Apple Guava (Psidium guayava), a small tree in the Myrtaceae family.

"Acacia Verek. 1. a flower magnified; 2. the pistil; 3. a section of the same; 4. half a seed." -Lindley, 1853

Gum Arabic Tree

"Acacia Verek. 1. a flower magnified; 2. the pistil; 3. a section of the same; 4. half a seed." -Lindley,…

A flowering branch of the Blue Gum Tree (Eucalyptus globulus), a tree in the Myrtaceae family of evergreen plants.

Blue Gum

A flowering branch of the Blue Gum Tree (Eucalyptus globulus), a tree in the Myrtaceae family of evergreen…

"Flower of Gynandropsis. a, gynophore. GYNOPHORE. In botany, an elongation or internode of the receptacle of a flower, bearing the gynoecium." -Whitney, 1911

Gynandropsis

"Flower of Gynandropsis. a, gynophore. GYNOPHORE. In botany, an elongation or internode of the receptacle…

"Hakea acicularis. 1. a couple of flowers; 2. a flower magnified; 3. the pistil; 4. a fruit; 5. a seed; 6. half an embryo." -Lindley, 1853

Silky Hakea

"Hakea acicularis. 1. a couple of flowers; 2. a flower magnified; 3. the pistil; 4. a fruit; 5. a seed;…

Harebells, otherwise known as bluebells are common herbaceous perennials.

Harebell

Harebells, otherwise known as bluebells are common herbaceous perennials.

Flower of a Camanula or Harebell, with a campanulate or bell-shaped corolla.

Harebell

Flower of a Camanula or Harebell, with a campanulate or bell-shaped corolla.

Hawthorn-blossom in section; parts adnate to whole face of ovary. and with each other beyond; another grade of perigynous.

Hawthorn Blossom

Hawthorn-blossom in section; parts adnate to whole face of ovary. and with each other beyond; another…

"Corylopsis. 1. flowers; 2. branch in fruit; 3. a flower separate; 4. a stamen; 5. a perpendicular section of the ovary; 6. a section of a seed removed from the capsule and placed with the hilum downwards." -Lindley, 1853

Winter Hazel

"Corylopsis. 1. flowers; 2. branch in fruit; 3. a flower separate; 4. a stamen; 5. a perpendicular section…

A head is a flower cluster with a short body, and without pedicles to the blossoms.

Head

A head is a flower cluster with a short body, and without pedicles to the blossoms.

"Dracophyllum scoparium. 1. a sepal; 2. a flower with its bract; 3. section of a seed-vessel." -Lindley, 1853

Heath

"Dracophyllum scoparium. 1. a sepal; 2. a flower with its bract; 3. section of a seed-vessel." -Lindley,…

The flowering branch of the Common Heath (Epacris impressa), a plant in the Ericaceae family of heaths.

Common Heath

The flowering branch of the Common Heath (Epacris impressa), a plant in the Ericaceae family of heaths.

The flower of the Common Heath (Epacris impressa), a plant in the Ericaceae family of heaths.

Common Heath

The flower of the Common Heath (Epacris impressa), a plant in the Ericaceae family of heaths.

"Hedycarya dentata. 1. male flower; 2. female ditto; 3. section of carpel; 4. ripe fruit." -Lindley, 1853

Hedycarya

"Hedycarya dentata. 1. male flower; 2. female ditto; 3. section of carpel; 4. ripe fruit." -Lindley,…

"Part of the inflorescence of Heliconia angustifolia; a, stamens and pistil, the surrounding parts being removed." -Lindley, 1853

Heliconia

"Part of the inflorescence of Heliconia angustifolia; a, stamens and pistil, the surrounding parts being…

Part of stem, leaf and umbel of Poison-Hemlock.

Poison Hemlock

Part of stem, leaf and umbel of Poison-Hemlock.

Umbel of Poison-Hemlock.

Poison Hemlock

Umbel of Poison-Hemlock.

Magnified flower of Poison-Hemlock.

Poison Hemlock

Magnified flower of Poison-Hemlock.

Magnified fruit of Poison-Hemlock.

Poison Hemlock

Magnified fruit of Poison-Hemlock.

Magnified fruit of Poison-Hemlock, cut in half.

Poison Hemlock

Magnified fruit of Poison-Hemlock, cut in half.

An illustration of liverwort (Hepatica): a, Thalloid stem with female branches; b, Thalloid stem with male branches. Hepatica is a genus of herbaceous perennial plants belonging to the buttercup family, Ranunculaceae. A native of central and northern Europe, Asia and northeastern North America, Hepatica is sometimes called liverleaf or "liverwort". It should not be confused with liverworts, which may also be called "Hepaticae". A few botanists include Hepatica within a wider interpretation of Anemone, as Anemone hepatica.

Hepatica

An illustration of liverwort (Hepatica): a, Thalloid stem with female branches; b, Thalloid stem with…

"Geranium Robertianum. 1. its stamens; 2. its ovary; 3. a section of its seed." -Lindley, 1853

Herb Robert

"Geranium Robertianum. 1. its stamens; 2. its ovary; 3. a section of its seed." -Lindley, 1853

This is the seed of the Hercules Club, Aralia spinosa, (Keeler, 1915).

Hercules' Club Seeds

This is the seed of the Hercules Club, Aralia spinosa, (Keeler, 1915).

"4. flower of Heterostemma acuminatum; 5. one of its anthers; 6. its pollen masses." -Lindley, 1853

Heterostemma

"4. flower of Heterostemma acuminatum; 5. one of its anthers; 6. its pollen masses." -Lindley, 1853

Magnified pollen of Hibiscus and other Mallow plants, beset with prickly projections.

Hibiscus pollen

Magnified pollen of Hibiscus and other Mallow plants, beset with prickly projections.

"Hippocratea Arnottiana. 1. a flower; 2. a cross section of the ovary; 3. ripe fruit." -Lindley, 1853

Hippocratea

"Hippocratea Arnottiana. 1. a flower; 2. a cross section of the ovary; 3. ripe fruit." -Lindley, 1853

The Holywood or Lignum Vitae (Guaiacum sanctum) is a plant in the Zygophyllaceae family of caltrops. It grows in Southern Florida and Central America.

Holywood

The Holywood or Lignum Vitae (Guaiacum sanctum) is a plant in the Zygophyllaceae family of caltrops.…

A branching thorn of Honey Locust, being an indurate leafless branch developed from an accessory bud far above the axial: at the cut portion below, three other buds are concealed under the petiole.

Honey Locust

A branching thorn of Honey Locust, being an indurate leafless branch developed from an accessory bud…

"Branch and Pod of Honey-locust (Gleditschia triacanthos). GLEDITSCHIA. A genus of leguminous thorny trees, with abruptly once or twice pinnate leaves, inconspicuous greenish and polygamous flowers, and flat pods." -Whitney, 1911

Honey Locust

"Branch and Pod of Honey-locust (Gleditschia triacanthos). GLEDITSCHIA. A genus of leguminous thorny…

Branch of a Honeysuckle, with connate-perfoliate leaves.

Honeysuckle Stem

Branch of a Honeysuckle, with connate-perfoliate leaves.

"Humulus Lupulus. 1. male flower; 2. female; 3. section of ovary; 4. ripe fruit; 5. section of it, showing embryo; 6. a grain of lupuline." -Lindley, 1853

Common Hop

"Humulus Lupulus. 1. male flower; 2. female; 3. section of ovary; 4. ripe fruit; 5. section of it, showing…

This shows the pistillate and staminate aments of Hop Hornbeam, Ostrya virginiana, (Keeler, 1915).

Hop Hornbeam Flowers

This shows the pistillate and staminate aments of Hop Hornbeam, Ostrya virginiana, (Keeler, 1915).