Explore 62,425 Species
Brewer's spruce
Picea breweriana S.Watson
Picea breweriana, or Brewer's spruce, is a large slow-growing endemic conifer of…
Engelmann spruce
Picea engelmannii Parry ex Engelm.
Picea engelmannii (Engelmann spruce) is an evergreen mountain tree native to wes…
white spruce
Picea glauca (Moench) Voss
Picea glauca, white spruce, is a hardy North American evergreen conifer with eco…
black spruce
Picea mariana (Mill.) Britton et al.
Picea mariana (black spruce) is a boreal North American conifer with ecological,…
Siberian spruce
Picea obovata Ledeb.
Picea obovata, or Siberian spruce, is a medium-sized evergreen timber tree nativ…
blue spruce
Picea pungens Engelm.
Picea pungens (blue spruce) is a Rocky Mountain native conifer widely cultivated…
red spruce
Picea rubens Sarg.
Picea rubens Sarg. (red spruce) is a late successional conifer native to high ea…
Schrenk's spruce
Picea schrenkiana Fisch. & C.A.Mey.
Schrenk's spruce (Picea schrenkiana) is a large evergreen conifer used for timbe…
Sitka spruce
Picea sitchensis (Bong.) Carrière
Picea sitchensis (Sitka spruce) is a large coastal conifer with many commercial …
chaparral pea
Pickeringia montana Nutt.
Pickeringia montana, the chaparral pea, is a thorny thicket-forming plant with t…
Yellow-spine Thistle
Picnomon acarna (L.) Cass.
Picnomon is an Asteraceae genus with only one known species, Picnomon acarna, na…
hairyseed bahia
Picradeniopsis absinthifolia (Benth.) B.G.Baldwin
Picradeniopsis absinthifolia is a North American perennial desert aster with yel…
Hawkweed Oxtongue
Picris hieracioides L.
Picris hieracioides L., or hawkweed oxtongue, is a Eurasian native invasive herb…
Japanese andromeda
Pieris japonica (Thunb.) D.Don ex G.Don
Pieris japonica is an acid-loving toxic poisonous temperate ornamental shrub wit…
Shrub Violet
Pigea floribunda (Lindl.) Lindl.
Pigea floribunda is a disputed-named perennial shrub violet in the Violaceae fam…
Artillery Plant
Pilea microphylla (L.) Liebm.
Pilea microphylla is a small monoecious plant named for its explosive pollen eje…
Canada clearweed
Pilea pumila (L.) A.Gray
Pilea pumila, also called Canadian clearweed, is an edible annual plant with kno…
camels-foot monkeybread
Piliostigma thonningii (Schumach.) Milne-Redh.
Piliostigma thonningii is an African dioecious tree adapted to bush fires, whose…
Fireflag
Pillansia templemannii (Baker) L.Bolus
Pillansia is a monotypic Iridaceae genus whose only species Pillansia templemann…
Florida pennyroyal
Piloblephis rigida (W.Bartram ex Benth.) Raf.
Piloblephis is a monotypic Lamiaceae genus with one native species, Piloblephis …
orange hawkweed
Pilosella aurantiaca (L.) F.W.Schultz & Sch.Bip.
Pilosella aurantiaca is a low-growing flowering herb native to much of Europe, u…
meadow hawkweed
Pilosella caespitosa (Dumort.) P.D.Sell & C.West
Pilosella caespitosa is a creeping perennial hawkweed, often a noxious invasive …
Pilosella echioides (Lumn.) F.W.Schultz & Sch.Bip.
Pilosella echioides (Lumn.) F.W.Schultz & Sch.Bip.
Pilosella echioides is a flowering plant in the Asteraceae family native from Eu…
Yellow-devil
Pilosella floribunda (Wimm. & Grab.) Fr.
Pilosella floribunda is a flowering plant with hairy spatula-shaped leaves that …
