Pictured are diagrams to illustrate modifications of receptacle in longitudinal sections of flowers.…
Oxalis bowiei flowers are rose red and yellowish at the base inside. The flowers are large and bloom…
Oxalis corniculata flowers are yellow and bloom spring to autumn. Pictured are the habit, detached bud,…
Oxalis crenata flowers are yellow striped with purple. The flowers bloom in September. The stem is erect…
Oxalis tetraphylla flowers are lurid red or purplish violet. The flowers are large and bloom in June.
Paeonia albiflora flowers usually have white or pink petals. The flowers are one and a half to two inches…
Mountain peony is the common name of paeonia moutan. The flowers are large and vary in color. The plant…
Mountain peony is the common name of paeonia moutan. The flowers are large and vary in color. The plant…
Paeonia tenuifolia flore-pleno is a variety of peony. Flore-pleno is the double state. The tenuifolia…
The common name of paeonia is peony. The wittmanniana variety yellowish white flowers. The flowers bloom…
Palafoxia hookeriana flowers are freely produced in loose clusters. The stems are very bushy and about…
Pancratium illyricum flowers are small and fragrant. The leaves are broad and strongly veined. The plant…
Pancratium maritimum flowers are long and very fragrant. The plant grows two feet tall.
The common name of papaver is poppy. Papaver bracteatum flowers are red and bloom in May. The plant…
Papaver rhoeas has the common names common corn poppy and redweed. The flowers are large and scarlet.…
Papaver murselli is a garden strain of papaver somniferum, or opium poppy. This strain has double flowers…
Pardanthus chinensis flowers are nearly two inches across and are orange colored spotted with purple-brown.…
The common name of passiflora is passion flower. The caerulea variety has flowers that are purple at…
The common names of passiflora are passion flower and passion fruit. The racemosa variety has deep red…
The common names of passiflora are passion flower and passion fruit. The raddiana variety has deep red…
Paulownia imperialis flowers are pale violet with dark spots inside. The flowers are one and a half…
The common names of pavia are buckeye and smooth-fruited horse chestnut. The californica variety has…
The common name of pavia rubra is red buckeye. The flowers are bright red and bloom in May. The plant…
Pictured is a garden variety of pea with flowers and pods in different stages of development.
This flowering branch of pear shows to corymbs of flowers. A large portion of flowers fall off at an…
The common name of pelargonium is stork's bill. The endlicherianum variety has large, deep rose colored…
Pelargonium inquinans flowers vary from intense scarlet, to rose colored, to white. The flowers bloom…
The common name of pelargonium peltatum is ivy-leaved pelargonium. The flowers vary from white to red…
The two upper petals of pelargonium tricolor flowers are very dark red and the three lower petals are…
The common name of pelargonium zonale is horseshoe geranium. The flowers vary from all shades of red…
The common name of pelargonium zonale is horseshoe geranium. Sometimes the seedlings only develop proliferous…
Double zonal pelargonium, commonly know a jewel, has small pure scarlet flowers. These flowers resemble…
Pentas carnea flowers are disposed in numerous, large heads. The flowers bloom almost all year round.…
The common name of pentstemon is beard tongue. The barbatus variety has light pink or light red flowers.…
The flowers of pentstemon diffusus are showy and purple. The flowers bloom in September. The plant grows…
The flowers of pentstemon hartwegi are scarlet or blood colored. The flowers are tubular and funnel…
The common name of peperomia is pepper elder. The marmorata variety has erect flowers in a tail-like…
Pereski grandiflora is a synonym of pereski grandifolia. The common name of pereski is barbados gooseberry.…
The common name of peristeria is dove flower. The cerina variety has yellow flower produced in bunches…
The common names of peristeria elata are Dove or Holy Ghost flower. The flowers are white with small…
Holy Ghost Flower, or Dove Flower, is the common name of peristeria elata. The flowers are sweet scented…
Petunia nyctaginiflora flowers grow on alone on small stems. The flowers are large and white. The flowers…
Petunia violacea flowers are purplish violet and every elegant. The flowers appear in August. The stems…
Phacelia viscida flowers are blue or purplish. The flowers appear in July. The stems are erect, about…
Phaius grandifolius flowers are brown within and white on the outside. The flowers are three to four…
The common name of phalaenopsis is moth orchid. The amabilis variety has white flowers with yellow streaks.…
The common name of phalaenopsis is moth orchid. The esmeralda variety has rose colored flowers one and…
The common name of phalaenopsis is moth orchid. The schilleriana variety measure more than two and a…
The common name of philadelphus coronarius is common mock orange or syringa. The flowers are white with…
Philadelphus gordonianus is a variety of mock orange. The flowers are white and scentless. The plant…
The flowers of philodendron selloum are deep green, bordered with white and white on the inside. The…
The flowers of philodendron speciosum are purplish green on the outside and purplish red on the inside.…
The flowers of phlox drummondii are red, varying to rose, purple or white, with a darker eye. The flowers…
Phlox paniculata flowers are pink-purple, varying to white. The flowers bloom in August. The plant is…
Phlox reptans flowers are purple or violet and bloom in spring. It is a neat and dwarf growing species.
The common names of phlox subulata are ground or moss pink. The flowers are pinkish with a dark center.…
Phlox subulata frondosa is a very vigorous variety with lilac-rose flowers.
Small flax lily is the common name of phormium cookianum. The flowers are yellow with greenish outer…
Common New Zealand flax is the common name of phormium tenax. The flowers are yellow or red and two…
The common names of photinia japonica are Japan Medlar, Japan Quince, and Loquat. The flowers are white…