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An illustration of the inflorescence of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button, Basket flower, Bluebottle, Boutonniere flower, Hurtsickle) is a small annual flowering plant in the family Asteraceae, native to Europe.

Inflorescence of a Cornflower

An illustration of the inflorescence of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button,…

An illustration of a ray-floret of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button, Basket flower, Bluebottle, Boutonniere flower, Hurtsickle) is a small annual flowering plant in the family Asteraceae, native to Europe.

Ray-floret of a Cornflower

An illustration of a ray-floret of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button,…

An illustration of a disk-floret of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button, Basket flower, Bluebottle, Boutonniere flower, Hurtsickle) is a small annual flowering plant in the family Asteraceae, native to Europe.

Disk-floret of a Cornflower

An illustration of a disk-floret of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button,…

An illustration of a longitudinal section view of a disk-floret of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button, Basket flower, Bluebottle, Boutonniere flower, Hurtsickle) is a small annual flowering plant in the family Asteraceae, native to Europe.

Disk-floret of a Cornflower (Longitudinal

An illustration of a longitudinal section view of a disk-floret of the cornflower. Centaurea cyanus…

"Early Human Embryo, giving diagrammatically the principal vessels antecedent to the establishment of the regular fetal circulation. H, heart; P, lungs; L, liver; T A, the aortic trunk or cardiac aorta; c, c', c", common, external, and internal carotids; s, subclavian artery; v, vertebral artery; 1, 2, 3, 4, 5, the aortic arches (the persistent left aortic arch hidden); A, subvertebral aorta; o, o', omphalomeseraic artery and vein, to and from U, the umbilical vesicle with its vitelline duct, dv; u, u, the two hypogastric or umbilical arteries, with the ramifications, u", u", in the placenta; u', umbilical vein; vh, hepatic vein; cv, inferior vena cava; vil, iliac veins; az, an azygous vein; vc, a posterior cardinal vein; vi, innominate vein; vp, portal vein; Dv, the ductus venosus; DC, a ductus Cuvieri. The anterior cardinal vein is seen beginning in the head and running down to the ductus Cuvieri, on the under side of the numbers 1, 2, 3, 4, 5." -Whitney, 1911

Human Embryo

"Early Human Embryo, giving diagrammatically the principal vessels antecedent to the establishment of…

Kalmia latifolia, commonly called Mountain-laurel or Spoonwood, is a flowering plant in the family Ericaceae, native to the eastern United States, from southern Maine south to northern Florida, and west to Indiana and Louisiana.

Mountain-laurel

Kalmia latifolia, commonly called Mountain-laurel or Spoonwood, is a flowering plant in the family Ericaceae,…

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central Asia. It is a biennial or monocarpic perennial plant growing to 30-80 cm tall, with rough, hairy, lanceolate leaves. The flowers start pink and turn vivid blue and are 15-20 mm in a branched spike, with all the stamens protruding. Stamens remain red and stand out against the blue flowers. It flowers between May and September. It is found in dry, bare and waste places.

Viper's Bugloss Inflorescence

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central…

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central Asia. It is a biennial or monocarpic perennial plant growing to 30-80 cm tall, with rough, hairy, lanceolate leaves. The flowers start pink and turn vivid blue and are 15-20 mm in a branched spike, with all the stamens protruding. Stamens remain red and stand out against the blue flowers. It flowers between May and September. It is found in dry, bare and waste places.

Viper's Bugloss Flower

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central…

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central Asia. It is a biennial or monocarpic perennial plant growing to 30-80 cm tall, with rough, hairy, lanceolate leaves. The flowers start pink and turn vivid blue and are 15-20 mm in a branched spike, with all the stamens protruding. Stamens remain red and stand out against the blue flowers. It flowers between May and September. It is found in dry, bare and waste places.

Viper's Bugloss Corolla and Stamens

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central…

An illustration of the Gynaeceum of the viper's bugloss. Fr, ovary; g, base of style; h, honeyglands.

Gynaeceum of Viper's Bugloss

An illustration of the Gynaeceum of the viper's bugloss. Fr, ovary; g, base of style; h, honeyglands.

An illustration of a inflorescence of a potato plant.

Inflorescence of Potato Plant

An illustration of a inflorescence of a potato plant.

An illustration of the leaf of a potato plant.

Potato Plant Leaf

An illustration of the leaf of a potato plant.

An illustration of the tubers on underground branches of a potato plant.

Tubers of a Potato Plant

An illustration of the tubers on underground branches of a potato plant.

"Strawberry False-worm (Emphytus maculatus). 1, 2 pupa, ventral and lateral views (line shows natural size); 3, fly, enlarged (wings on one side detached); 4, larva; 5, fly with wings closed; 6, larva curled up; 7, coccoon; 8, antenna; 9, egg. (4, 5, 6, and 7 natural size; 8 and 9 enlarged.)" -Whitney, 1911

Strawberry Sawfly

"Strawberry False-worm (Emphytus maculatus). 1, 2 pupa, ventral and lateral views (line shows natural…

An illustration of a plantain plant. The plantain is a crop in the genus Musa and is generally used for cooking, in contrast to the soft, sweet banana (which is sometimes called the dessert banana).

Plantain Flower

An illustration of a plantain plant. The plantain is a crop in the genus Musa and is generally used…

An illustration of a plantain plant flower and bract. In botany, a bract is a modified or specialized leaf. Bracts are ordinarily associated with reproductive structures (subtending flowers, inflorescence axes, or cone scales). They are ordinarily reduced in size relative to foliage leaves, or of a different color or texture from foliage leaves, or both.

Plantain Flower and Bract

An illustration of a plantain plant flower and bract. In botany, a bract is a modified or specialized…

An illustration of a section of a plantain flower.

Plantain Flower (Section)

An illustration of a section of a plantain flower.

An illustration of plantain plant fruit bursting.

Plantain Fruit

An illustration of plantain plant fruit bursting.

An illustration of the flower of the mistletoe plant. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Mistletoe Flower

An illustration of the flower of the mistletoe plant. Mistletoe is the common name for a group of hemi-parasitic…

An illustration of one staminate flower in section, magnified twelve times. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Mistletoe Staminate

An illustration of one staminate flower in section, magnified twelve times. Mistletoe is the common…

An illustration of pistillate flowers of mistletoe. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Pistillate Flowers of Mistletoe

An illustration of pistillate flowers of mistletoe. Mistletoe is the common name for a group of hemi-parasitic…

An illustration of one pistillate flower of mistletoe. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

One Pistillate Flower of Mistletoe

An illustration of one pistillate flower of mistletoe. Mistletoe is the common name for a group of hemi-parasitic…

An illustration of a mistletoe plant attached to the host plant. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Mistletoe Attached to Host Plant

An illustration of a mistletoe plant attached to the host plant. Mistletoe is the common name for a…

An illustration of the flower of the wheat plant.

Wheat Flower

An illustration of the flower of the wheat plant.

An illustration of the female flower of the sedge plant. Carex is a genus of plants in the family Cyperaceae, commonly known as sedges (although other, related species are also called sedges, those of genus Carex may be called "true" sedges). It is the most species-rich genus in the family. The study of Carex is known as caricology.

Sedge

An illustration of the female flower of the sedge plant. Carex is a genus of plants in the family Cyperaceae,…

Fly orchid (Ophrys insectifera) is a plant of the family Orchidaceae, a native of the British Isles and Europe favouring sites with alkaline soil. The name arises because it resembles a fly, being totally dependent on flies and bees for pollination. However this is fairly unsuccessful as they seldom visit the flower and it forms seed only infrequently. The plants use scent to attract male flies, which pollinate the flowers as they attempt to mate with the flower. The scent released by the flowers mimic female fly sexual pheromones.

Fly Orchid

Fly orchid (Ophrys insectifera) is a plant of the family Orchidaceae, a native of the British Isles…

An illustration of a sedge plant.

Sedge Plant

An illustration of a sedge plant.

Lilium martagon (Martagon or Turk's cap lily) is a species of lily. It has a widespread native region extending from central Europe east through northern Asia to Mongolia and Korea. Several subspecies have been named. The plant is stem-rooting, growing between 1 m and 2 m tall. The flower colour is typically a pink-purple, with dark spots, but is quite variable, extending from near white to near black. The flowers are scented. Numerous flowers are borne on each plant, and up to 50 can be found on vigorous plants.

Turk's Cap Lily

Lilium martagon (Martagon or Turk's cap lily) is a species of lily. It has a widespread native region…

Convallaria majalis, commonly known as the Lily of the Valley or Lily-of-the-Valley, is the only species in the genus Convallaria in the flowering plant family Ruscaceae, formerly placed in the lily family Liliaceae or in its own family called Convallariaceae. This woodland plant is native throughout the cool temperate Northern Hemisphere in Asia and Europe and a limited native population in Eastern USA.

Lily of the Valley

Convallaria majalis, commonly known as the Lily of the Valley or Lily-of-the-Valley, is the only species…

"Encrinite: Any fossil crinoid; a stone-lily: a term especially applied to the ordinary stalked form with a cylindrical stem and well-formed arms. a, a, parts of the stem; b, b, separate joints." -Whitney, 1911

Encrinite

"Encrinite: Any fossil crinoid; a stone-lily: a term especially applied to the ordinary stalked form…

"Fruit of Peach (Prunus persica). En, endocarp; Ep, epicarp; Mes, mesocarp." -Whitney, 1911

Peach

"Fruit of Peach (Prunus persica). En, endocarp; Ep, epicarp; Mes, mesocarp." -Whitney, 1911

The flower of the Flowering Rush (Butomus umbellatus), the sole species in the Butomaceae family.

Flowering Rush

The flower of the Flowering Rush (Butomus umbellatus), the sole species in the Butomaceae family.

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.

The flower of Eperua grandiflora, a legume in the Fabaceae family.

Legume

The flower of Eperua grandiflora, a legume in the Fabaceae family.

"Anterior View, Distal End, of Right Humerus of a Man. H, humerus; epc, epicondyle, or external supracondyloid protuberance; ept, epitrochlea, or internal supracondyloid protuberance; cp, capitellum, or convex articular suface for head of radius; tr, trochlea, or transversely concave articular surface for the ulna; epc and cp are together the ectocondyle, and ept and tr are together the entocondyle." -Whitney, 1911

Humerus

"Anterior View, Distal End, of Right Humerus of a Man. H, humerus; epc, epicondyle, or external supracondyloid…

The Trailing Arbutus (Epigaea repens) is a spreading shrub in Ericaceae family of heaths.

Trailing Arbutus

The Trailing Arbutus (Epigaea repens) is a spreading shrub in Ericaceae family of heaths.

The English Dogwood (Philadelphus coronarius) is a deciduous shrub, here showing its epigynous stamens and petals growing on top of the ovary.

English Dogwood

The English Dogwood (Philadelphus coronarius) is a deciduous shrub, here showing its epigynous stamens…

"Right Femur of a Youth. E, E, epiphyses; gtr, ltr, greater and lesser trochanter; h, head; et, it, external and internal tuberosity; ec, ic, external and internal condyle; n, neck." -Whitney, 1911

Youth Femur

"Right Femur of a Youth. E, E, epiphyses; gtr, ltr, greater and lesser trochanter; h, head; et, it,…

"Epipleurae.-- Thorax, scapular arch, and part of pelvic arch of a bobolink (Dolichonyx oryzivorus). ep, four epipleurae or uncinate processes of as many ribs; pl, pleurapophysial parts of seven ribs; hp, hemapopysial parts of six ribs; v, dorsolumbar vertebrae; st, sternum (the letters are on the carina or keel); m, manubrium sterni; cp, costal process of sternum, bearing f, furcula; ec, epiclidium of furcula; h, hypoclidium of fucula; gl, glenoid fossa, formed by coracoid and scapula; il, ilium; is, ischium; p, pubis; a, acetabulum." -Whitney, 1911

Bobolink Epipleurae

"Epipleurae.-- Thorax, scapular arch, and part of pelvic arch of a bobolink (Dolichonyx oryzivorus).…

"Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola, bearing sporangia. 3. Spore, with elaters coiled about it." -Whitney, 1911

Wood Horsetail

"Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola,…

The Winter Aconite (Eranthis hyemalis) is a European plant in the Ranunculaceae family of buttercups.

Winter Aconite

The Winter Aconite (Eranthis hyemalis) is a European plant in the Ranunculaceae family of buttercups.

An illustration of a young prothallus: sp, spore; pr, prothallus. A prothallium, or prothallus is usually a pteridophyte, i.e. spore-bearing plant, (almost exclusively ferns) in gametophyte stage in the alternation of generations cycle.

Young Prothallus of Fern

An illustration of a young prothallus: sp, spore; pr, prothallus. A prothallium, or prothallus is usually…

"A Lion's Head Erased. In heraldry, represented as having been forcibly torn off, the separated parts being left jagged, as opposed to couped." -Whitney, 1911

Erased

"A Lion's Head Erased. In heraldry, represented as having been forcibly torn off, the separated parts…

An illustration of a microscopic view under the surface of a young prothallus: pr, prothallus; w, root-hairs; an, antheridia; ar, archegonia. A prothallium, or prothallus is usually a pteridophyte, i.e. spore-bearing plant, (almost exclusively ferns) in gametophyte stage in the alternation of generations cycle.

Young Prothallus of Fern

An illustration of a microscopic view under the surface of a young prothallus: pr, prothallus; w, root-hairs;…

Eremopteris artemisiaefolia is a species of "a genus of fossil ferns, separated from Sphenopteris." -Whitney, 1911

Fossil Fern

Eremopteris artemisiaefolia is a species of "a genus of fossil ferns, separated from Sphenopteris."…

The Bell Heather (Erica cinerea) is a plant in the Ericaceae family of heaths.

Bell Heather

The Bell Heather (Erica cinerea) is a plant in the Ericaceae family of heaths.

The magnified flower of the Bell Heather (Erica cinerea) is a plant in the Ericaceae family of heaths.

Bell Heather

The magnified flower of the Bell Heather (Erica cinerea) is a plant in the Ericaceae family of heaths.

Lphioglossum (adder's-tongue) is a genus of about 25-30 species of Ophioglossales in the family Ophioglossaceae, with a cosmopolitan but primarily tropical and subtropical distribution. The name Ophioglossum comes from the Greek, and means "snake-tongue". Adders-tongues are so-called because the spore-bearing stalk is thought to resemble a snake's tongue. Each plant typically sends up a small, undivided leaf blade with netted venation, and the spore stalk forks from the leaf stalk, terminating in sporangia which are partially concealed within a structure with slitted sides.

Adderstongue

Lphioglossum (adder's-tongue) is a genus of about 25-30 species of Ophioglossales in the family Ophioglossaceae,…

Eriocaulon setaceum is a plant species in the Eriocaulaceae family of pipeworts.

Pipewort

Eriocaulon setaceum is a plant species in the Eriocaulaceae family of pipeworts.

Monkwearmouth is an area of Sunderland located at the north side of the mouth of the River Wear. It was one of the three original settlements on the banks of the River Wear along with Bishopwearmouth and Sunderland, the area now known as the East End. It includes the area around St. Peter's Church and was once the main centre of Wearside shipbuilding and coalmining in the town. It is now host to a campus of the University of Sunderland and the National Glass Centre. It is served by the three Church of England churches of the Parish of Monkwearmouth. The locals of the area were called "Barbary Coasters". The borough stretches from Wearmouth Bridge to the harbour mouth on the north side of the river and is one of the oldest parts of Sunderland.

Monkwearmouth Church

Monkwearmouth is an area of Sunderland located at the north side of the mouth of the River Wear. It…

Erotylus boisduvali, a fungus beetle. "e, beetle; f, palpus; g, tarsus, from below; h, terminal joint of tarsus, from above; i, antenna." -Whitney, 1911

Fungus Beetle

Erotylus boisduvali, a fungus beetle. "e, beetle; f, palpus; g, tarsus, from below; h, terminal joint…

The flowering branch of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Coca

The flowering branch of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

The leaf of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Coca Leaf

The leaf of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

"Escallonia macrantha. Escallonia is a South American genus of trees or shrubs, of the natural order Saxifragaceae, allied to the Itea of the United States." -Whitney, 1911

Escallonia

"Escallonia macrantha. Escallonia is a South American genus of trees or shrubs, of the natural order…

Illustration of a right spherical triangle and the five circular parts placed in the sectors of a circle in the order in which they occur in the triangle. "The ten formulas used in the solution of spherical right triangles can be expressed by means of two rules, known as Napier's rules of circular parts."

Napier's Right Spherical Triangle

Illustration of a right spherical triangle and the five circular parts placed in the sectors of a circle…

Corallina, a modern lime-secreting alga (entire plant).

Corallina

Corallina, a modern lime-secreting alga (entire plant).

A mass of coccoliths; a marine pelagic plant of low order covered with calcereous plates. A coccolithophore is a unicellular, eukaryotic phytoplankton (alga).

Coccolithophora

A mass of coccoliths; a marine pelagic plant of low order covered with calcereous plates. A coccolithophore…

Head of brain coral with soft parts.

Brain Coral

Head of brain coral with soft parts.

"Cartilaginous Cranium of the Pike (Esox lucius), with its intrinsic ossifications. A, top view; 3, small ossifications in the rostrum; N, N, nasal fossae; I Or, interorbital septum; Eth, ethmoid; Prf, Ptf, prefrontal and postfrontal; EpO, epiotic; OpO, opisthotic; Pt, pteriotic; EO, exoccipital." -Whitney, 1911

Pike Cranium

"Cartilaginous Cranium of the Pike (Esox lucius), with its intrinsic ossifications. A, top view; 3,…