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Of Sunflower (pappus of two deciduous scales).

Sunflower

Of Sunflower (pappus of two deciduous scales).

This shows part of the fruiting ament of the Swamp Cottonwood, Populus heterophylla, (Keeler, 1915).

Swamp Cottonwood Fruit

This shows part of the fruiting ament of the Swamp Cottonwood, Populus heterophylla, (Keeler, 1915).

This shows the leaf of the Swamp Cottonwood, Populus heterophylla, (Keeler, 1915).

Swamp Cottonwood Leaf

This shows the leaf of the Swamp Cottonwood, Populus heterophylla, (Keeler, 1915).

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

Sweet Birch Fruit

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

A type of flower.

Sweet Pea

A type of flower.

Sweet-Potato plant forming thickened roots. Some in the middle are just beginning to thicken; one at the left has grown more; one at the right is still larger.

Sweet-Potato

Sweet-Potato plant forming thickened roots. Some in the middle are just beginning to thicken; one at…

These are the fruit of Sycamore, Platanus occidentalis, (Keeler, 1915).

Sycamore Fruit

These are the fruit of Sycamore, Platanus occidentalis, (Keeler, 1915).

"Symplocos laxiflora. 1. expanded flower; 2. corolla cut open; 3. a stamen; 4. longitudinal section of ovary; 5. transverse ditto; 6. ripe fruit; 7. longitudinal section of ditto." -Lindley, 1853

Symplocos

"Symplocos laxiflora. 1. expanded flower; 2. corolla cut open; 3. a stamen; 4. longitudinal section…

"Synaphea dilatata. 1. a flower; 2. one of its lobes; 3. the ovary and style and stigma." -Lindley, 1853

Synaphea

"Synaphea dilatata. 1. a flower; 2. one of its lobes; 3. the ovary and style and stigma." -Lindley,…

A state of flower or fruit in which the carpels are united.

Syncarpous

A state of flower or fruit in which the carpels are united.

"Paronychia capitata. 1. a section of a flower; 2. of the ovary; 3. ripe seed; 4. a section of it." -Lindley, 1853

Algerian Tea

"Paronychia capitata. 1. a section of a flower; 2. of the ovary; 3. ripe seed; 4. a section of it."…

Portion of stem and leaves of Telegraph-plant (Desmodium gyrans), almost of natural size.

Telegraph-plant

Portion of stem and leaves of Telegraph-plant (Desmodium gyrans), almost of natural size.

Tendrils, such as these of the Virginia Creeper, are very slender, leafless branches, used to enable certain plants to climb.

Tendrils

Tendrils, such as these of the Virginia Creeper, are very slender, leafless branches, used to enable…

"Tetratheca hirsuta. 1. the stamens; 2. the pistil, with one of the cells laid open." -Lindley, 1853

Tetratheca

"Tetratheca hirsuta. 1. the stamens; 2. the pistil, with one of the cells laid open." -Lindley, 1853

"Thesium pratense. 1. a flower; 2. the same laid open; 3. half an unripe fruit; 4. placenta and pair of ovules; 5. half the ripe fruit and seed." -Lindley, 1853

Thesium

"Thesium pratense. 1. a flower; 2. the same laid open; 3. half an unripe fruit; 4. placenta and pair…

The Southern Globe Thistle (Echinops ruthenicus) is a species of thistles in the Asteraceae or daisy family.

Southern Globe Thistle

The Southern Globe Thistle (Echinops ruthenicus) is a species of thistles in the Asteraceae or daisy…

"Armeria vulgaris. 1. calyx and stamens; 2. section of corolla; 3. pistil; 4. ovule; 5. embryo." -Lindley, 1853

Sea Thrift

"Armeria vulgaris. 1. calyx and stamens; 2. section of corolla; 3. pistil; 4. ovule; 5. embryo." -Lindley,…

Loment or jointed legume of a Tick-Trefoil (Desmodium).

Tick-Trefoil

Loment or jointed legume of a Tick-Trefoil (Desmodium).

A type of flower.

Toad Flax

A type of flower.

Corolla of Toad-Flax, with similar corolla spurred at the base.

Toad-Flax

Corolla of Toad-Flax, with similar corolla spurred at the base.

"Toddalia floribunda. 1. a flower; 2. a pair of carpels, one of which shows its ovule; 3. fruits; 4. a perpendicular section of one of them." -Lindley, 1853

Toddalia

"Toddalia floribunda. 1. a flower; 2. a pair of carpels, one of which shows its ovule; 3. fruits; 4.…

"Tonina fluviatilis. 1. male flower; 2. centre of do.; 3. female and male flowers; 4. section of ripe fruit; 5. seed; 6. section of do." -Lindley, 1853

Tonina fluviatilis

"Tonina fluviatilis. 1. male flower; 2. centre of do.; 3. female and male flowers; 4. section of ripe…

Dipteryx odorata or the tonka bean is the seed from a legume tree of the Fabaceae family.

Tonka Bean

Dipteryx odorata or the tonka bean is the seed from a legume tree of the Fabaceae family.

"Salvadora persica. 1. flower; 2. a section of its fruit." -Lindley, 1853

Toothbrush Tree

"Salvadora persica. 1. flower; 2. a section of its fruit." -Lindley, 1853

Gymnogramme hispida is a species of tree ferns in the Cyatheaceae family.

Tree Fern

Gymnogramme hispida is a species of tree ferns in the Cyatheaceae family.

The fruit of the Tree-of-Heaven, Ailanthus (Keeler, 1915).

Tree of Heaven Seed

The fruit of the Tree-of-Heaven, Ailanthus (Keeler, 1915).

A Tree-Fern, Dicksonia arborescens, with a young one near its base. In front a common herbaceous Fern (Polypodium vulgare) with its creeping stem or rootstock.

Tree-Fern

A Tree-Fern, Dicksonia arborescens, with a young one near its base. In front a common herbaceous Fern…

A section of the trunk of a Tree-Fern.

Tree-Fern Trunk

A section of the trunk of a Tree-Fern.

"Stylidium calcaratum. 1. anthers and stigma, forming the point of the column; 2. capsule split open; 3. seed." -Lindley, 1853

Book Triggerplant

"Stylidium calcaratum. 1. anthers and stigma, forming the point of the column; 2. capsule split open;…

The very short rootstock and strong terminal bud of a Trillium or Birthroot.

Trillium

The very short rootstock and strong terminal bud of a Trillium or Birthroot.

Trillium is a genus of about 40-50 species of perennial herbaceous flowering plants, native to temperate regions of North America and Asia.

Trillium

Trillium is a genus of about 40-50 species of perennial herbaceous flowering plants, native to temperate…

"Showing how to trim a block for cutting longitudinal sections." -Stevens, 1916

Trimming

"Showing how to trim a block for cutting longitudinal sections." -Stevens, 1916

"Collomia gracilis. 1. calyx and corolla; 2. pistil; 3. cross section of a ripe seed-vessel." -Lindley, 1853

Trumpet

"Collomia gracilis. 1. calyx and corolla; 2. pistil; 3. cross section of a ripe seed-vessel." -Lindley,…

A winged seed of the Trumpet-Creeper.

Trumpet-Creeper

A winged seed of the Trumpet-Creeper.

"Tulip bulb; longitudinal section. F, solid stem; B, flower bud; S, leaf-bases serving as bud-scales, and also for the storage of plant food." -Gager, 1916

Tulip Bulb

"Tulip bulb; longitudinal section. F, solid stem; B, flower bud; S, leaf-bases serving as bud-scales,…

The female reproductive organ, pistil, of a Tulip.

Tulip Pistil

The female reproductive organ, pistil, of a Tulip.

Of Tulip-tree, with adnate (and extrorse) anther.

Tulip-tree

Of Tulip-tree, with adnate (and extrorse) anther.

The flower of the Tulip-tree, Liriodendron tulipifera (Keeler, 1915).

Tulip-Tree Flower

The flower of the Tulip-tree, Liriodendron tulipifera (Keeler, 1915).

The fruit of the Tulip-tree, Liriodendron tulipifera (Keeler, 1915).

Tulip-tree fruit

The fruit of the Tulip-tree, Liriodendron tulipifera (Keeler, 1915).

"Turnera genistoides. 1. a flower cut open; 2. a section of the ovary; 3. a seed; 4. a section of it." -Lindley, 1853

Turnera

"Turnera genistoides. 1. a flower cut open; 2. a section of the ovary; 3. a seed; 4. a section of it."…

Corm of Indian Turnip.

Turnip

Corm of Indian Turnip.

"Batis maritima. 1. a male cone; 2. a male flower; 3. the same forced open to show the petals; 4. on of the bracteal scales; 5. a female cone; 6. a perpendicular section of the same; 7. a ripe cone; 8. a section of it; 9. a seed; 10. an embryo." -Lindley, 1853

Turtleweed

"Batis maritima. 1. a male cone; 2. a male flower; 3. the same forced open to show the petals; 4. on…

"1. flower of Linnaea borealis; 2. the same cut open and showing the interior of the ovary; 3. a cross section of the ovary." -Lindley, 1853

Twinflower

"1. flower of Linnaea borealis; 2. the same cut open and showing the interior of the ovary; 3. a cross…

An umbel arrangement of flowers.

Umbel

An umbel arrangement of flowers.

Racemes clustered in racemes, making a compound raceme, or umbel as in this Caraway.

Compound Umbel

Racemes clustered in racemes, making a compound raceme, or umbel as in this Caraway.

Embryo which has unfolded in early stage of germination and begun to grow.

Unfolding Embryo

Embryo which has unfolded in early stage of germination and begun to grow.

A summer branch of Uvularia perfoliata; upper cordate-clasping, uppermost simply sessile.

Uvularia

A summer branch of Uvularia perfoliata; upper cordate-clasping, uppermost simply sessile.

"Valeriana celtica. 1. entire flower magnified; 2. the ovary and young calyx; 3. the fruit, with the pappose full-grown calyx; 4. a vertical section of fruit and seed." -Lindley, 1853

Valerian

"Valeriana celtica. 1. entire flower magnified; 2. the ovary and young calyx; 3. the fruit, with the…

Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers. The flowers are in bloom in the northern hemisphere from June to September. Valerian was used as a perfume in the sixteenth century.

Valerian Flower

Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers.…

An illustration of a longitudinal sectional view of the valerian flower. Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers. The flowers are in bloom in the northern hemisphere from June to September. Valerian was used as a perfume in the sixteenth century.

Valerian Flower (Longitudinal Section)

An illustration of a longitudinal sectional view of the valerian flower. Valerian is a hardy perennial…

Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers. The flowers are in bloom in the northern hemisphere from June to September. Valerian was used as a perfume in the sixteenth century.

Valerian Inflorescence

Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers.…

An illustration of the valerian seed with attached pappus. In a composite flower, Pappus is the part of individual disk and ray flowers that surrounds the base, in the same manner as the calyx does in a non-compound flower. The pappus may be like bristles or tiny hairs, teeth, or scales, and is usually too small to see without magnification. Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers. The flowers are in bloom in the northern hemisphere from June to September. Valerian was used as a perfume in the sixteenth century.

Valerian Seed with Pappus

An illustration of the valerian seed with attached pappus. In a composite flower, Pappus is the part…

"Centranthus ruber. 1. a corolla; 2. section of ovary; 3. ripe fruit, with its pappus; 4. cross section of a seed." -Lindley, 1853

Red Valerian

"Centranthus ruber. 1. a corolla; 2. section of ovary; 3. ripe fruit, with its pappus; 4. cross section…

Young vascular bundle: p, primary phloem; x, primary xylem; c, first divisions of cambium cells.

Vascular Bundle

Young vascular bundle: p, primary phloem; x, primary xylem; c, first divisions of cambium cells.

Diagram of a vegetable cell, such as it would be if when spherical it were equally pressed by similar surrounding cells in a heap.

Vegetable Cell

Diagram of a vegetable cell, such as it would be if when spherical it were equally pressed by similar…

Simple-stemmed vegetation.

Vegetation

Simple-stemmed vegetation.

"Sections of the stem of a Brazilian Vellozia; 1. transversely; 2, 3. longitudinally." -Lindley, 1853

Brazilian Vellozia

"Sections of the stem of a Brazilian Vellozia; 1. transversely; 2, 3. longitudinally." -Lindley, 1853

A rosette of leaves of Venus's flytrap seen from above.

Venus Flytrap

A rosette of leaves of Venus's flytrap seen from above.

"Dionaea muscipula. 1. its pistil; 2. a sectional view of it showing the placentae; 3. a seed; 4. the same without its crustaceous skin, and opened so as to show the embryo." -Lindley, 1853

Venus Flytrap

"Dionaea muscipula. 1. its pistil; 2. a sectional view of it showing the placentae; 3. a seed; 4. the…

Plant of Dionaea muscipula, or Venus's Fly-trap.

Venus' Fly-trap

Plant of Dionaea muscipula, or Venus's Fly-trap.