Plants — 23,508 Species

Taiwan Firethorn

Pyracantha koidzumii (Hayata) Rehder

Pyracantha koidzumii is a 4m tall species native to Taiwan, introduced to several southeastern US states.

American wintergreen

Pyrola americana G.Don

Pyrola americana G.Don is a small forest herb found across parts of Canada and the United States.

bog wintergreen

Pyrola asarifolia Michx.

Pyrola asarifolia is an evergreen western North American wintergreen species with hard-to-germinate dust-like seeds.

green-flowered wintergreen

Pyrola chlorantha Sw.

Pyrola chlorantha, or greenflowered wintergreen, is a circumboreal Pyrola species that is endangered in several U.S. states.

Toothed Wintergreen

Pyrola dentata Sm.

Pyrola dentata Sm. is a herbaceous plant native to western North America that grows in varied woodland and open rocky habitats.

shinleaf

Pyrola elliptica Nutt.

Pyrola elliptica Nutt. is a small white-flowered plant growing across parts of Canada and the United States.

Arctic wintergreen

Pyrola grandiflora Radius

Pyrola grandiflora is a circumpolar evergreen perennial subshrub with no confirmed documented medicinal properties.

intermediate wintergreen

Pyrola media Sw.

Pyrola media, intermediate wintergreen, is a rare declining evergreen perennial flowering plant native to parts of Europe and Western Asia.

lesser wintergreen

Pyrola minor L.

Pyrola minor L. is a rosette-leaved sclerophyll with nodding pink flowers and 5-segmented nodding capsules.

white-veined wintergreen

Pyrola picta Sm.

Pyrola picta Sm. is a perennial heath-family herb native to western North America from southwestern Canada to the southwestern US.

Chinese Pyrola

Pyrola rotundifolia L.

Pyrola rotundifolia (round-leaved wintergreen) is a Pyrola species with fragrant white flowers that grows across Eurasia.

Red Beaks

Pyrorchis nigricans (R.Br.) D.L.Jones & M.A.Clem.

Pyrorchis nigricans is a terrestrial tuberous orchid that typically flowers after summer fire across southern Australia.

Flame vine

Pyrostegia venusta (Ker Gawl.) Miers

Pyrostegia venusta is a vigorous climbing vine with clustered orange flowers, cultivated in warm regions and naturalized in three world areas.

Carolina desert-chicory

Pyrrhopappus carolinianus (Walter) DC.

Pyrrhopappus carolinianus, or Carolina desert-chicory, is an annual Asteraceae plant native to eastern and southeastern US, pollinated by Hemihalictus bees.

smallflower desert-chicory

Pyrrhopappus pauciflorus (D.Don) DC.

Pyrrhopappus pauciflorus (Texas dandelion) is a North American native wildflower with edible parts and uses from food to drinks.

Leather-leaf fern

Pyrrosia eleagnifolia (Bory) Hovenkamp

Pyrrosia eleagnifolia, or leather-leaf fern, is an adaptable drought-tolerant fern widespread across New Zealand.

tongue fern

Pyrrosia lingua (Thunb.) Farw.

Pyrrosia lingua (Thunb.) Farw. is a cultivated epiphytic polypodiaceous fern native to East and Southeast Asia.

Rock Felt Fern

Pyrrosia rupestris (R.Br.) Ching

Pyrrosia rupestris is a creeping fern with varied leaf shapes that anchors to rocks or tree trunks.

Buffalo-nut

Pyrularia pubera Michx.

Pyrularia pubera, buffalo nut, is a hemiparasitic sandalwood shrub native to eastern United States Appalachian forests.

Callery pear

Pyrus calleryana Decne.

Pyrus calleryana, the Callery pear, is a deciduous ornamental tree native to East Asia with widely grown commercial cultivars.

Pyrus communis L.

Pyrus communis L.

Pyrus communis L., the common pear, is a commercially important temperate fruit species native to Europe and western Asia.

Oleaster-leaved Pear

Pyrus elaeagrifolia Pall.

Pyrus elaeagrifolia (the oleaster-leaved pear) is a drought- and frost-resistant wild pear species native to parts of southeastern Europe and Crimea.

Jamaican caper

Quadrella cynophallophora (L.) Hutch.

Sawtooth oak

Quercus acutissima Carruth.

Quercus acutissima, the sawtooth oak, is an Asian deciduous oak introduced to North America that is often invasive.