"Branch of Sarsaparilla (Smilax medica), with fruits." -Whitney, 1911

Sarsaparilla

"Branch of Sarsaparilla (Smilax medica), with fruits." -Whitney, 1911

"Sassafras (Sassafras sassafras). 1. Branch with fruits. 2. Branch with sterile flowers. a, b, c, different forms of leaves." -Whitney, 1911

Sassafras

"Sassafras (Sassafras sassafras). 1. Branch with fruits. 2. Branch with sterile flowers. a, b, c, different…

Flower of Saururus or Lizard's-tail; naked, but hermaphrodite.

Saururus

Flower of Saururus or Lizard's-tail; naked, but hermaphrodite.

"Lavradia Vellozii. 1. an expanded flower; 2. the stamens with exterior petaloid scales; 3. a seed; 4. a section of it." -Lindley, 1853

Sauvagesia

"Lavradia Vellozii. 1. an expanded flower; 2. the stamens with exterior petaloid scales; 3. a seed;…

The Summer Savory (Satureja hortensis) is a flowering plant of the Lamiaceae family. The image shows its: a, corolla; b, calyx; and c, pistil.

Summer Savory

The Summer Savory (Satureja hortensis) is a flowering plant of the Lamiaceae family. The image shows…

"Flowering plant of saxifrage (Saxifraga virginiensis). a, a flower; b, the fruit." -Whitney, 1911

Early Saxifrage

"Flowering plant of saxifrage (Saxifraga virginiensis). a, a flower; b, the fruit." -Whitney, 1911

A wide-creeping fern with long reddish-brown fronds, which grow to be approximately 1 foot in length. They are usually found in New Zealand.

Pteris Scaberula

A wide-creeping fern with long reddish-brown fronds, which grow to be approximately 1 foot in length.…

The scammony (Convolvulus scammonia) is a flowering plant of the bindweed family. R, the root.

Scammony

The scammony (Convolvulus scammonia) is a flowering plant of the bindweed family. R, the root.

"This is a drooping or creeping species, with light green, glossy leaves and large clusters of orange salmon-colored flowers."—Heinrich, 1887

Begnia Glaucophylla Scandens

"This is a drooping or creeping species, with light green, glossy leaves and large clusters of orange…

One of the lobes of its fruit-bearing portion, bearing two rows of spore-cases.

Schizea Pusilla

One of the lobes of its fruit-bearing portion, bearing two rows of spore-cases.

Spore-case of the Schizea Pusilla, detached, opening lengthwise.

Schizea Pusilla

Spore-case of the Schizea Pusilla, detached, opening lengthwise.

"Schubertia multiflora. 1. the anthers united to the stigma; 2. the ovary and stigma, from the latter of which the pollen masses have been removed; 3. a pair of pendulous pollen masses, with their gland; 4. the ripe follicles." -Lindley, 1853

Schubertia

"Schubertia multiflora. 1. the anthers united to the stigma; 2. the ovary and stigma, from the latter…

Diagram of a scorpioid cyme, with opposite leaves or bracts.

Scorpioid Cyme

Diagram of a scorpioid cyme, with opposite leaves or bracts.

Also known as Pandanus utilis. It is a tropical tree with an edible fruit. It is native to Madagascar and Mauritius.

Screwpine

Also known as Pandanus utilis. It is a tropical tree with an edible fruit. It is native to Madagascar…

This scroll is a repeating pattern of a vine and leaves.

Scroll

This scroll is a repeating pattern of a vine and leaves.

"Grolier scroll, the flowing curved lines that surround and interlace the geometrical framework of a design for a book-cover in the style of Grolier." -Whitney, 1911

Grolier Scroll

"Grolier scroll, the flowing curved lines that surround and interlace the geometrical framework of a…

Also known as Alnus maritima. The branch of a Seaside Alder, native to the United States.

Branch of Seaside Alder

Also known as Alnus maritima. The branch of a Seaside Alder, native to the United States.

Parts of the same, two of each kind, separated and displayed; the torus or receptacle in the centre; <em>a</em> a sepal; <em>b</em>, a petal; <em>c</em>, a stamen <em>d</em>, a pistil.

Sedum Ternatum

Parts of the same, two of each kind, separated and displayed; the torus or receptacle in the centre;…

The cluster of leaves and raceme of the Barberry, (Gray, 1858).

Seed

The cluster of leaves and raceme of the Barberry, (Gray, 1858).

Seed of a Linden or Basswood cut through lengthwise, the parts lettered: <em>a</em>, the hilum or scar; <em>b</em>, the outer coat; <em>c</em>, the inner; <em>d</em>, the alhumen; <em>e</em>, the embryo.

Seed

Seed of a Linden or Basswood cut through lengthwise, the parts lettered: a, the hilum or scar;…

Open 4-valved spore-case of a Selaginella, and its four large spores (macrospores).

Selaginella

Open 4-valved spore-case of a Selaginella, and its four large spores (macrospores).

Macrospores of Selaginella

Selaginella

Macrospores of Selaginella

Macrospores of Selaginella, separated.

Selaginella

Macrospores of Selaginella, separated.

A bright brown fern with fronds reaching between 1 foot and 1.5 feet. They are commonly found in the East Indies.

Pteris Semipinnata

A bright brown fern with fronds reaching between 1 foot and 1.5 feet. They are commonly found in the…

"Flowering branch of Senna (Cassia obovata). a, a pod." -Whitney, 1911

Senna

"Flowering branch of Senna (Cassia obovata). a, a pod." -Whitney, 1911

The flowers and plant of Senna alexandrina which was once known as Cassia acutifolia.

Alexandrian Senna

The flowers and plant of Senna alexandrina which was once known as Cassia acutifolia.

"Wild senna (Cassia marilandica)." -Gager, 1916

Wild Senna

"Wild senna (Cassia marilandica)." -Gager, 1916

A member of the outermost circle of flower parts.

Sepal

A member of the outermost circle of flower parts.

Also known as Ulmus serotina. A branch of a September Elm tree, native to a select few states in North America.

Branch of September Elm

Also known as Ulmus serotina. A branch of a September Elm tree, native to a select few states in North…

Toothed like a saw.

Serrate

Toothed like a saw.

This coffee service is covered with an open honey comb design. It has handles formed of wheat ears, stalks and leaves.

Coffee Service

This coffee service is covered with an open honey comb design. It has handles formed of wheat ears,…

"Sesamum indicum. 1. a ripe fruit; 2. one of its halves; 3. a seed; 4. a cross section of it." -Lindley, 1853

Sesame

"Sesamum indicum. 1. a ripe fruit; 2. one of its halves; 3. a seed; 4. a cross section of it." -Lindley,…

This lace shawl was made using a "pusher bobbin net machine". The design is made of small delicate flowers and leaves.

Lace Shawl

This lace shawl was made using a "pusher bobbin net machine". The design is made of small delicate flowers…

A shrub with leaves with expanded blades.

Shrub

A shrub with leaves with expanded blades.

Shrub

Shrub

Shrub

"Branch of Simarouba amara, with female flowers. a, a male flower; b, a female flower." -Whitney, 1911

Simarouba

"Branch of Simarouba amara, with female flowers. a, a male flower; b, a female flower." -Whitney, 1911

Diagram of a simple cyme in which the axis lengthens, so as to take the form of a raceme.

Simple cyme

Diagram of a simple cyme in which the axis lengthens, so as to take the form of a raceme.

This illustration shows two types of simple leaves derived from the elliptical type:
9. pinnately lobed; 10. pinnately divided.

Simple Leaves Derived from the Elliptical Type

This illustration shows two types of simple leaves derived from the elliptical type: 9. pinnately lobed;…

A cleft or recess between two lobes.

Sinus

A cleft or recess between two lobes.

"The so-called green jackdaw of Asia, <i>Cissa sinensis</i>. The sirgang inhabits the southeastern Himalayan region, and thence through Burma to Tasserim, and has occasioned much literature." &mdash;Whitney, 1889
<p>The bird is perched on a branch with a few leaves.

Sirgang

"The so-called green jackdaw of Asia, Cissa sinensis. The sirgang inhabits the southeastern Himalayan…

Also known as Salix sitchensis. The branch of a Sitka Willow tree, native to northwestern North America.

Branch of Sitka Willow

Also known as Salix sitchensis. The branch of a Sitka Willow tree, native to northwestern North America.

<i>Sium sisarum</i>. "A species of water parsnip, generally said to be of Chinese origin, long cultivated in Europe for its esculent root. It is a plant a foot high with pinnate leaves, a hardy perennial, but grown as an annual. The root is composed of small fleshy tubers, of the size of the little finger, united at the crown." &mdash;Whitney, 1889

Skirret

Sium sisarum. "A species of water parsnip, generally said to be of Chinese origin, long cultivated in…

These are the fruit, or samara, of Slippery Elm, Ulmus pubescens, (Keeler, 1915).

Slippery Elm Fruit

These are the fruit, or samara, of Slippery Elm, Ulmus pubescens, (Keeler, 1915).

"Germinating seed of Ophiocaryon paradoxum. a. radicle; b. cauliculus; cc. cotyledons." -Lindley, 1853

Snakenut

"Germinating seed of Ophiocaryon paradoxum. a. radicle; b. cauliculus; cc. cotyledons." -Lindley, 1853

"Flowering plant of sanicle (Sanicula marilandica). (a), a male flower; (b), the fruit." -Whitney, 1911

Maryland Black Snakeroot

"Flowering plant of sanicle (Sanicula marilandica). (a), a male flower; (b), the fruit." -Whitney, 1911

"Sapindus senegalensis. 1. an expanded flower; 2. a petal; 3. the ovaries before fertilisation; 4. a vertical section of a ripe drupe, showing the embryo." -Lindley, 1853

Soapberry

"Sapindus senegalensis. 1. an expanded flower; 2. a petal; 3. the ovaries before fertilisation; 4. a…

"Branch with fruits of Sapindus drummondi. a, a flower." -Whitney, 1911

Western Soapberry

"Branch with fruits of Sapindus drummondi. a, a flower." -Whitney, 1911

Leaves of Solanum jasminoides, the petiole adapted for climbing.

Solanum Jasminoides

Leaves of Solanum jasminoides, the petiole adapted for climbing.

This shows two leaves of Spanish Oak, Quercus digitata, (Keeler, 1915).

Spanish Oak Leaves

This shows two leaves of Spanish Oak, Quercus digitata, (Keeler, 1915).

Leaf-like structure more or less enclosing a fleshy inflorescence, particularly in the Araceae.

Spathe

Leaf-like structure more or less enclosing a fleshy inflorescence, particularly in the Araceae.

Pertains to shape.

Spatulate

Pertains to shape.

Of the spiderwort family (Tradescantia), clockwise from top: T. bracteata, T. pilosa, T. montana, T. brevicaulis, T. occidentalis, T. reflexa.

Spiderwort

Of the spiderwort family (Tradescantia), clockwise from top: T. bracteata, T. pilosa, T. montana, T.…

A flower cluster with flowers sessile along a common more or less elongated axis.

Spike

A flower cluster with flowers sessile along a common more or less elongated axis.

"Euonymus europaeus. 1. a section of a fruit; 2. a seed enveloped in its aril; 3. a perpendicular section of a seed." -Lindley, 1853

European Spindle

"Euonymus europaeus. 1. a section of a fruit; 2. a seed enveloped in its aril; 3. a perpendicular section…

Opposite leaves of Euonymus, or Spindle-tree, showing the successive pairs crossing each other at right angles.

Spindle-tree

Opposite leaves of Euonymus, or Spindle-tree, showing the successive pairs crossing each other at right…

The Leaf of Akanthos Spinosus has pointed lobes terminating in spines and narrow leaves.

Leaf of Akanthos Mollis

The Leaf of Akanthos Spinosus has pointed lobes terminating in spines and narrow leaves.

An image of spores.

Spores

An image of spores.

The Ivy Spray has broad-lobed leaves.

Ivy Spray

The Ivy Spray has broad-lobed leaves.

This Ivy Spray has elliptic tapering leaves that are apparent after blooming.

Ivy Spray

This Ivy Spray has elliptic tapering leaves that are apparent after blooming.

This Ivy Spray has lanceolate leaves.

Ivy Spray

This Ivy Spray has lanceolate leaves.