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"Lanceolate.--Lance or spear-shaped, as in tulipa sylvestris." -Newman, 1850

Lanceolate Leaf

"Lanceolate.--Lance or spear-shaped, as in tulipa sylvestris." -Newman, 1850

"Elliptic.--Nearly oval, but of equal breadth at each end." -Newman, 1850

Elliptical Leaf

"Elliptic.--Nearly oval, but of equal breadth at each end." -Newman, 1850

A fiddle-shaped leaf.

Fiddle-Shaped Leaf

A fiddle-shaped leaf.

"Pinnate.--Term applied to a leaf when cut into many parallel segments, like the rose." -Newman, 1850

Pinnatifid

"Pinnate.--Term applied to a leaf when cut into many parallel segments, like the rose." -Newman, 1850

"Palmated.--Cut into oblong segments, so as to resemble a hand." -Newman, 1850

Palmate

"Palmated.--Cut into oblong segments, so as to resemble a hand." -Newman, 1850

A lobed leaf.

Lobed Leaf

A lobed leaf.

A triangular stem.

Triangular Stem

A triangular stem.

"Crenae.--Notches, or round teeth, bordering a leaf or the petals of a flower." -Newman, 1850

Crenated Leaf

"Crenae.--Notches, or round teeth, bordering a leaf or the petals of a flower." -Newman, 1850

A rhomboid or diamond-shaped leaf.

Rhomboid Leaf

A rhomboid or diamond-shaped leaf.

A triangular leaf.

Triangular Leaf

A triangular leaf.

An orbicular or circular leaf.

Orbicular Leaf

An orbicular or circular leaf.

An unequal leaf.

Unequal Leaf

An unequal leaf.

"Bipinnatifid.--Twice pinnatifid." -Newman, 1850

Bipinnatifid

"Bipinnatifid.--Twice pinnatifid." -Newman, 1850

"Imbricate.--When leaves are laid one over another, like tiles on a roof, they are said to be imbricated." -Newman, 1850

Imbricated Leaves

"Imbricate.--When leaves are laid one over another, like tiles on a roof, they are said to be imbricated."…

Spreading leaves.

Spreading Leaves

Spreading leaves.

"Lyrate.--Lyre-shaped: cut into many transverse segments, becoming larger towards the extremity of the leaf, which is rounded." -Newman, 1850

Lyrate Leaf

"Lyrate.--Lyre-shaped: cut into many transverse segments, becoming larger towards the extremity of the…

"Mucronate.--Sharply pointed." -Newman, 1850

Mucronate Leaf

"Mucronate.--Sharply pointed." -Newman, 1850

"Pinnate.--Term applied to a leaf when cut into many parallel segments, like the rose." -Newman, 1850

Pinnate

"Pinnate.--Term applied to a leaf when cut into many parallel segments, like the rose." -Newman, 1850

An articulated or jointed stem.

Articulated Stem

An articulated or jointed stem.

"Ternate.--Consisting of three leaflets." -Newman, 1850

Ternate Leaf

"Ternate.--Consisting of three leaflets." -Newman, 1850

"Stipulae.--Two small leaves, placed usually at the base of the floral leaf, and on opposite sides of the branch." -Newman, 1850

Stipule

"Stipulae.--Two small leaves, placed usually at the base of the floral leaf, and on opposite sides of…

An arrow-shaped leaf.

Arrow-Shaped Leaf

An arrow-shaped leaf.

"Serrated.--Edged with sharp teet, like those of a saw." -Newman, 1850

Serrated Leaf

"Serrated.--Edged with sharp teet, like those of a saw." -Newman, 1850

"Binate.--With two leaflets." -Newman, 1850

Binate

"Binate.--With two leaflets." -Newman, 1850

"Plicate.--Folded like a fan, or plaited." -Newman, 1850

Plaited Leaf

"Plicate.--Folded like a fan, or plaited." -Newman, 1850

A kidney-shaped leaf.

Kidney-Shaped Leaf

A kidney-shaped leaf.

A trowel-shaped leaf.

Trowel-Shaped Leaf

A trowel-shaped leaf.

Opposite of ovate, egg-shaped and narrow at the base.

Obovate Leaf

Opposite of ovate, egg-shaped and narrow at the base.

An egg-shaped leaf, wide at the base.

Ovate Leaf

An egg-shaped leaf, wide at the base.

"Pectinate.--Like the teeth of a comb." -Newman, 1850

Pectinate Leaf

"Pectinate.--Like the teeth of a comb." -Newman, 1850

A lion toothed leaf.

Lion Toothed Leaf

A lion toothed leaf.

"Bipinnate.--Double rows of leaflets." -Newman, 1850

Bipinnate

"Bipinnate.--Double rows of leaflets." -Newman, 1850

Opposite leaves, in adjacent pairs.

Opposite Leaves

Opposite leaves, in adjacent pairs.

Upright leaves.

Upright Leaves

Upright leaves.

"Digitate.--Having the form of an open hand." -Newman, 1850

Digitate Leaf

"Digitate.--Having the form of an open hand." -Newman, 1850

"Linear.--Narrow, with parallel sides, as in most grasses." -Newman, 1850

Linear Leaf

"Linear.--Narrow, with parallel sides, as in most grasses." -Newman, 1850

A wedge-shaped leaf.

Wedge-Shaped Leaf

A wedge-shaped leaf.

"Peltate.--Stalk fastened in the middle." -Newman, 1850

Peltate Leaf

"Peltate.--Stalk fastened in the middle." -Newman, 1850

"Hastate.--Formed like the head of an ancient halbert." -Newman, 1850

Hastate

"Hastate.--Formed like the head of an ancient halbert." -Newman, 1850

"Spatulate.--Having the form of a spatula; a kind of knife, almost spoon-shaped, but flat." -Newman, 1850

Spatulate Leaf

"Spatulate.--Having the form of a spatula; a kind of knife, almost spoon-shaped, but flat." -Newman,…

"Tripinnate.--Triple rows of leaflets." -Newman, 1850

Tripinnate

"Tripinnate.--Triple rows of leaflets." -Newman, 1850

An acerose, or needle-shaped leaf.

Acerose Leaf

An acerose, or needle-shaped leaf.

A hastate leaf that is triangular in shape with basal lobes.

Hastate Leaf

A hastate leaf that is triangular in shape with basal lobes.

A bulbous root.

Bulbous Root

A bulbous root.

"General outline of leaves. a, linear; b, lanceolate; c, wedge-shaped; d, spatulate; e, ovate; f, obovate; g, kidney-shaped; h, orbicular; i, elliptical." -Bergen, 1896

Leaf Shapes

"General outline of leaves. a, linear; b, lanceolate; c, wedge-shaped; d, spatulate; e, ovate; f, obovate;…

"Tips of leaves. a, acuminate or taper-pointed; b, acute; c, obtuse; d, truncate; e, retuse; f, emarginate or notched; g (end leaflet), obcordate; h, cuspidate, - the point sharp and rigid; i, mucronate, - the point merely a prolongation of the midrib." -Bergen, 1896

Leaf Tips

"Tips of leaves. a, acuminate or taper-pointed; b, acute; c, obtuse; d, truncate; e, retuse; f, emarginate…

"A, Shapes of bases of leaves; B, Peltate leaf of Tropaeolum. 1, heart-shaped; 2, arrow-shaped; 3, halberd-shaped." -Bergen, 1896

Leaf Bases

"A, Shapes of bases of leaves; B, Peltate leaf of Tropaeolum. 1, heart-shaped; 2, arrow-shaped; 3, halberd-shaped."…

"A, Runcinate leaf of dandelion." -Bergen, 1896

Dandelion Leaf

"A, Runcinate leaf of dandelion." -Bergen, 1896

"Lyrate leaf." -Bergen, 1896

Lyrate Leaf

"Lyrate leaf." -Bergen, 1896

"Shapes of margins of leaves. a (1), finely serrate; (2), coarsely serrate; (3), doubly serrate. b (1), finely dentate; (2), sinuate dentate; (3), doubly dentate. c, deeply sinuate. d, wavy. e (1), crenate or scalloped; (2), doubly crenate." -Bergen, 1896

Leaf Margins

"Shapes of margins of leaves. a (1), finely serrate; (2), coarsely serrate; (3), doubly serrate. b (1),…

"Diagrams of inflorescence. A, panicle; B, raceme; C, spike; D, head; E, umbel." -Bergen, 1896

Inflorescence

"Diagrams of inflorescence. A, panicle; B, raceme; C, spike; D, head; E, umbel." -Bergen, 1896

Two students drawing geometrical shapes on the chalkboard. A student is also using a scale while students sitting at desks take notes.

Geometry

Two students drawing geometrical shapes on the chalkboard. A student is also using a scale while students…

Illustration showing how to find the area of a hexagon using the triangles that make it up.

Area of Hexagon

Illustration showing how to find the area of a hexagon using the triangles that make it up.

Illustration of an irregular figure. To find area, divide round curved portions in small steps with dividers ; add in any straight pieces. "Divide into narrow strips; measure their mid-ordinates. Then - Area = aver. mid-ordinate X length.

Area Of Irregular Figures

Illustration of an irregular figure. To find area, divide round curved portions in small steps with…

The vertical section of the stratified epithelium of the cornea of a rabbit. Labels: a, Anterior epithelium showing the different shapes of the cells at various depths from the free surface; b, a portion of the substance of cornea.

Epithelium of the Rabbit's Cornea

The vertical section of the stratified epithelium of the cornea of a rabbit. Labels: a, Anterior epithelium…

Nerve cells, also known as nerve corpuscles, comprise the second principle element of the nervous tissue. The are not generally present in the nerve trunk, but are found in collections of nervous tissue called ganglia. Shown are the ganglion nerve corpuscles of different shapes.

Ganglion Nerve Corpuscles

Nerve cells, also known as nerve corpuscles, comprise the second principle element of the nervous tissue.…

Vertical section of rabbit's cornea. Labels: anterior epithelium, showing the different shapes of the cells at various depths from the free surface; b, portion of the substance of cornea.

Magnified Rabbit's Cornea

Vertical section of rabbit's cornea. Labels: anterior epithelium, showing the different shapes of the…

Labeled shapes showing various measures of form.

Measures of Form

Labeled shapes showing various measures of form.

Showing different types of forms or shapes: rectangle, right triangle, acute triangle, and obtuse triangle.

Forms

Showing different types of forms or shapes: rectangle, right triangle, acute triangle, and obtuse triangle.

Four different types of forms or shapes: right triangle, isosceles triangle, rectangle, and circle.

Shapes

Four different types of forms or shapes: right triangle, isosceles triangle, rectangle, and circle.