Perennial plant of the Asteraceae family, native to South America, and Mexico.

Zinnia Tenuiflora

Perennial plant of the Asteraceae family, native to South America, and Mexico.

Genus of spiny shrubs of the buckthorn family.

Zizyphus Jujuba

Genus of spiny shrubs of the buckthorn family.

Plant belonging to the orchid family.

Zygopetalum Machaii

Plant belonging to the orchid family.

Plant featuring branched joints and red or pink flowers.

Zygocactus Truncatus

Plant featuring branched joints and red or pink flowers.

Also known as taraxacum officinale. Part A of the image shows the common form, grown in plains region at low altitude. Part B of the image is the alpine form.

Common Dandelion

Also known as taraxacum officinale. Part A of the image shows the common form, grown in plains region…

The image depicts the flower and portion of a leaf of the Pitcairnia andreana. The petals are yellow at the tip with red at the bottom.

Pitcairnia Andreana

The image depicts the flower and portion of a leaf of the Pitcairnia andreana. The petals are yellow…

This shrub has oval leathery leaves and small white flowers. It is a common landscaping plant.

Pittosporum Tobira

This shrub has oval leathery leaves and small white flowers. It is a common landscaping plant.

A greenish-yellow plant with small sweetly fragrant flowers. They are widely spread throughout the eastern half of South Africa.

Pittosporum Viridiflorum

A greenish-yellow plant with small sweetly fragrant flowers. They are widely spread throughout the eastern…

A flower that grows in the winter and spring. It is pale yellow and lined with purple.

Placea Arzæ

A flower that grows in the winter and spring. It is pale yellow and lined with purple.

Also known as Platycodon gradiflorus and Chinese Bellflower. This flower bears large blue flowers.

Balloon Flower

Also known as Platycodon gradiflorus and Chinese Bellflower. This flower bears large blue flowers.

A flower with elegant blue petals. The pedals are approximately 1.5 inches in length.

Plectranthus Fruticocus

A flower with elegant blue petals. The pedals are approximately 1.5 inches in length.

A violet-colored flower that has an erect stem, with many branches.

Plumbago Europaea

A violet-colored flower that has an erect stem, with many branches.

Also known as Plumeria. It is native of tropical America, and is made up of thickish branches and white, yellowish, or rose-purple flowers.

Frangipangi

Also known as Plumeria. It is native of tropical America, and is made up of thickish branches and white,…

A yellow flower with small pink florets. They are generally around 1 foot in height.

Podolepis Aristata

A yellow flower with small pink florets. They are generally around 1 foot in height.

A flower belonging to the family Asteraceae. The petals are usually purple, lilac, or white, and the peduncles are long.

Podolepis Gracilis

A flower belonging to the family Asteraceae. The petals are usually purple, lilac, or white, and the…

A blue flower that is in the shape of a funnel. They tend to cluster on the ends of the stalks.

Polemonium Confertum

A blue flower that is in the shape of a funnel. They tend to cluster on the ends of the stalks.

A flower that is native to eastern North American. It is either blue or white with leafy stems.

Polemonium Reptans

A flower that is native to eastern North American. It is either blue or white with leafy stems.

A diagram of the various parts of pollen of orchid. po- Pollinia; c- Caudicle; vd- Viscid Disk; vg- Viscid Glove; r- Rostellum; lr- Lip of Rostellum.

Pollen of Orchid

A diagram of the various parts of pollen of orchid. po- Pollinia; c- Caudicle; vd- Viscid Disk; vg-…

An image of a strawberry plant in flower. There are numerous short Stamens that are readily accessible to insects.

Strawberry Plant

An image of a strawberry plant in flower. There are numerous short Stamens that are readily accessible…

Also known as Orchis morio. A depiction of the pollination of an orchid, where a hive bee is sucking nectar from the flower.

Pollination of an Orchid

Also known as Orchis morio. A depiction of the pollination of an orchid, where a hive bee is sucking…

Also known as Antirrhinum orontium. It is a weed with pink flowers and hairy green fruit.

Weasel's Snout

Also known as Antirrhinum orontium. It is a weed with pink flowers and hairy green fruit.

A white flower with numerous florets. It is found in Australia, and is abundant on sand plains.

Polycalymma Stuartii

A white flower with numerous florets. It is found in Australia, and is abundant on sand plains.

A flower in the buckwheat family. A drooping flower with a white tube and green deltoid teeth.

Polygonum Japonicum

A flower in the buckwheat family. A drooping flower with a white tube and green deltoid teeth.

Also known as Polygonatum multiflorum. Consists of several peduncles and white flowers. They are commonly found in the Northern hemisphere.

Solomon's Seal

Also known as Polygonatum multiflorum. Consists of several peduncles and white flowers. They are commonly…

Also known as Polygonum cuspidatum. It has hollow stems and has a similar appearance to bamboo. The flowers are small and white, and the leaves are in the shape of an oval.

Japanese Knotweed

Also known as Polygonum cuspidatum. It has hollow stems and has a similar appearance to bamboo. The…

Also known as Polygonum orientale. A flower that is commonly found in southeastern Asia and Australia. It consists of red drooping flowers and ovate leaves.

Prince's Feather

Also known as Polygonum orientale. A flower that is commonly found in southeastern Asia and Australia.…

Also known as Polygonum sachalinense. It is native to northeastern Asia and northern Japan. The flowers are a greenish-yellow color, with long-pointed ovate leaves.

Giant Knotweed

Also known as Polygonum sachalinense. It is native to northeastern Asia and northern Japan. The flowers…

A tall yellow flower that is grown in the Andean region. The tubers of this plant are edible.

Polumnia Edulis

A tall yellow flower that is grown in the Andean region. The tubers of this plant are edible.

A large plant with whitish-green fronds reaching up to a foot in height.

Polypodium Angustatum

A large plant with whitish-green fronds reaching up to a foot in height.

Also known as Pontederia cordata. A blue plant with numerous spikes of blue flowers. It generally is found growing in shallow waters.

Pickerelweed

Also known as Pontederia cordata. A blue plant with numerous spikes of blue flowers. It generally is…

Also known as Portulaca grandiflora. A small flower, fast-growing flower that can grow up to 30 centimeters tall. It is commonly used as an ornamental plant.

Moss-Rose

Also known as Portulaca grandiflora. A small flower, fast-growing flower that can grow up to 30 centimeters…

A white fragrant flower, with a spreading star-shaped limb.

Posoqueria Multriflora

A white fragrant flower, with a spreading star-shaped limb.

A popular fern with variagated fronds that are straw-colored. It thrives on acidic soil.

Pteris Cretica Albolineata

A popular fern with variagated fronds that are straw-colored. It thrives on acidic soil.

A slightly-toothed fern with fronds ranging between 1 foot and 2 feet in length. It is a long and slender plant, commonly found in tropical America.

Pteris Denticulata

A slightly-toothed fern with fronds ranging between 1 foot and 2 feet in length. It is a long and slender…

A large-fronded fern with straw-colored leaves. It is commonly found in tropical America.

Pteris Grandifolia

A large-fronded fern with straw-colored leaves. It is commonly found in tropical America.

An arrow-fronded fern with blackish, long leaves. They are common between Venezuela and Brazil.

Pteris Sagittifolia

An arrow-fronded fern with blackish, long leaves. They are common between Venezuela and Brazil.

A shrub that is native to Europe, northwest Africa, and western Asia. It reaches up to 13 feet in height, and is covered in small oval leaves and yellow flowers. The fruit produced on this shrub is sour, but edible, and rich in Vitamin C.

Berberis Vulgaris

A shrub that is native to Europe, northwest Africa, and western Asia. It reaches up to 13 feet in height,…

A blue flower with calyx longer than the tube of the corolla. They typically bloom in April and May, and are found in Europe and Siberia.

Pulmonaria Mollis

A blue flower with calyx longer than the tube of the corolla. They typically bloom in April and May,…

A pink flower that typically blooms in the Spring. The plant has been used for centuries as a medicinal herb, and the leaves are commonly eaten by caterpillars. They reach up to 1 foot in height.

Pulmonaris Officinalis

A pink flower that typically blooms in the Spring. The plant has been used for centuries as a medicinal…

A pink flower that typically blooms in June. The elliptical leaves are dark green, with silver specks that give it a marbled appearance. They are usually found in Europe.

Pulmonaria Saccharata

A pink flower that typically blooms in June. The elliptical leaves are dark green, with silver specks…

Also known as Punica granatum. The fruits are red and have the ability to grow through droughts. They tend to bloom between June and September, and grow up to 15 feet and 30 feet.

Pomegranate

Also known as Punica granatum. The fruits are red and have the ability to grow through droughts. They…

A white flower with stripes of blue down the center. It typically blooms in the Spring, and is found in Asia and the Middle East. The leaves grow in twos, and are strap-like.

Puschkinia Scilloides

A white flower with stripes of blue down the center. It typically blooms in the Spring, and is found…

A shrubby flower with white petals. It can grow up to 3 feet, and is native to the Canary Islands.

Pyrethrum Frutescens

A shrubby flower with white petals. It can grow up to 3 feet, and is native to the Canary Islands.

A plant with solitary pink flowers, with yellow disks. They generally reach up to 2 feet in height, and is largely used in the manufacture of insect powders.

Pyrethrum Roseum Flore-Pleno

A plant with solitary pink flowers, with yellow disks. They generally reach up to 2 feet in height,…

A depiction of the upper portion of the Pyrethrum roseum.

Pyrethrum Roseum

A depiction of the upper portion of the Pyrethrum roseum.

A free-flowering tree that grows beautiful red flowers. They are commonly found in Japan, and tend to bloom in May.

Pyrus Floribunda

A free-flowering tree that grows beautiful red flowers. They are commonly found in Japan, and tend to…

A tree which produces dark red flowers and fragrant green leaves. The leaves are oval and serrated. They are native to Japan.

Pyrus Japonica

A tree which produces dark red flowers and fragrant green leaves. The leaves are oval and serrated.…

A plant which grows peculiar white fruits.

Pyrus Leucocarpa

A plant which grows peculiar white fruits.

A bright red flower with golden-yellow acidic fruits. They are commonly found in Japan.

Pyrus Maulei

A bright red flower with golden-yellow acidic fruits. They are commonly found in Japan.

A plant which produces white or faintly pink flowers, with very small leaves and lobed leaves. They are common in Japan and bloom in May.

Pyrus Toringo

A plant which produces white or faintly pink flowers, with very small leaves and lobed leaves. They…

Also known as Quercus cerris. A greenish-white tree with a dark gray bark. The flower produced is a cylindrical cluster of yellow flowers, which are usually wind-pollinated. The fruit is a large acorn, which is bicoloured with an orange bottom half grading to a green-brown tip.

Turkey Oak

Also known as Quercus cerris. A greenish-white tree with a dark gray bark. The flower produced is a…

Also known as Quisqualis indica. A vine with red flower clusters that can grow between 2.5 meters and 8 meters. It is commonly found in Asia.

Chinese Honeysuckle

Also known as Quisqualis indica. A vine with red flower clusters that can grow between 2.5 meters and…

Also known as Campanula rapunculus. "A hardy biennial, cultivated for the use of its fleshy roots in salads, either boiled or in a raw state, generally the latter; the leaves are also used in winter salads."—Nicholson, 1884

Rampion

Also known as Campanula rapunculus. "A hardy biennial, cultivated for the use of its fleshy roots in…

A large genus of about 600 species of plants, including buttercups and spearworts. They are mostly bright yellow or white, with a yellow center.

Garden Ranunculus

A large genus of about 600 species of plants, including buttercups and spearworts. They are mostly bright…

A plant which produces numerous flowers with oblong white petals. The leaves and stems are slightly hairy. They are commonly found in central and southern Europe.

Ranunculus Aconitifolius

A plant which produces numerous flowers with oblong white petals. The leaves and stems are slightly…

A perennial flower with white petals and green foliage. They tend to bloom in April and May, and are found in the Western Alps.

Ranunculus Amplexicaulis

A perennial flower with white petals and green foliage. They tend to bloom in April and May, and are…

Also known as Ranunculus asiaticus. A herbaceous perennial plant with red or pink flowers. The stems are simple and branched at the base. They generally bloom in May and June.

Persian Buttercup

Also known as Ranunculus asiaticus. A herbaceous perennial plant with red or pink flowers. The stems…

A plant with bright yellow flowers and short stems. They tend to bloom between March and May in Europe.

Ranunculus Ficaria

A plant with bright yellow flowers and short stems. They tend to bloom between March and May in Europe.

A plant which produces flowers with 7 to 8 white petals. The stamens are very numerous. They bloom between February and April, and are found in Central America.

Rhipsalis Funalis

A plant which produces flowers with 7 to 8 white petals. The stamens are very numerous. They bloom between…

An evergreen shrub with bright red flowers. It usually reaches between 20 and 25 feet, and is commonly found in Thailand, Nepal, and India.

Rhododendron Arboreum

An evergreen shrub with bright red flowers. It usually reaches between 20 and 25 feet, and is commonly…