Explore 23,046 Species
Amblyopappus pusillus Hook. & Arn.
Amblyopappus pusillus Hook. & Arn.
Amblyopappus pusillus, the only species in the genus Amblyopappus, is dwarf coas…
Amblystegium serpens (Hedw.) Schimp.
Amblystegium serpens (Hedw.) Schimp.
Amblystegium serpens, creeping feathermoss or nano moss, is a common British ple…
Ambrosia acanthicarpa Hook.
Ambrosia acanthicarpa Hook.
Ambrosia acanthicarpa is a weedy North American annual ragweed common across the…
Ambrosia ambrosioides (Cav.) W.W.Payne
Ambrosia ambrosioides (Cav.) W.W.Payne
Ambrosia ambrosioides, or canyon ragweed, is a desert shrub ragweed, with tradit…
Ambrosia artemisiifolia L.
Ambrosia artemisiifolia L.
Ambrosia artemisiifolia L. is a common allergenic annual ragweed with a history …
Ambrosia bidentata Michx.
Ambrosia bidentata Michx.
Ambrosia bidentata (lanceleaf ragweed) is a wind-pollinated annual herb native t…
Ambrosia chamissonis (Less.) Greene
Ambrosia chamissonis (Less.) Greene
Ambrosia chamissonis is a large sprawling monoecious perennial herb that produce…
Ambrosia chenopodiifolia (Benth.) W.W.Payne
Ambrosia chenopodiifolia (Benth.) W.W.Payne
Ambrosia chenopodiifolia is a thickly branching monoecious shrub that produces s…
Ambrosia confertiflora DC.
Ambrosia confertiflora DC.
Ambrosia confertiflora is a perennial ragweed native to North America, classifie…
Ambrosia deltoidea (Torr.) W.W.Payne
Ambrosia deltoidea (Torr.) W.W.Payne
Ambrosia deltoidea is a drought-deciduous bursage shrub native to the North Amer…
Ambrosia dumosa (A.Gray) W.W.Payne
Ambrosia dumosa (A.Gray) W.W.Payne
Ambrosia dumosa, or white bursage, is a drought-deciduous ragweed shrub native t…
Ambrosia hispida Pursh
Ambrosia hispida Pursh
Ambrosia hispida Pursh is a ragweed, a monoecious, mostly glandular plant with w…
Ambrosia monogyra (Torr. & A.Gray) Strother & B.G.Baldwin
Ambrosia monogyra (Torr. & A.Gray) Strother & B.G.Baldwin
Ambrosia monogyra is a thin-leaved shrub native to the southwestern United State…
Ambrosia psilostachya DC.
Ambrosia psilostachya DC.
Ambrosia psilostachya DC. is a hairy perennial herb native to North America, nat…
Ambrosia salsola (Torr. & A.Gray) Strother & B.G.Baldwin
Ambrosia salsola (Torr. & A.Gray) Strother & B.G.Baldwin
Ambrosia salsola is a foul-smelling perennial desert shrub that easily hybridize…
Ambrosia trifida L.
Ambrosia trifida L.
Ambrosia trifida, commonly giant ragweed, is an annual weedy herb with documente…
Ambrosina bassii L.
Ambrosina bassii L.
Ambrosina bassii is a small aroid species with low seed production that is host …
Amelanchier alnifolia (Nutt.) Nutt.
Amelanchier alnifolia (Nutt.) Nutt.
Amelanchier alnifolia, also called Saskatoon, is a deciduous North American smal…
Amelanchier arborea (F.Michx.) Fernald
Amelanchier arborea (F.Michx.) Fernald
Amelanchier arborea, the common serviceberry, is a North American small tree wit…
Amelanchier laevis Wiegand
Amelanchier laevis Wiegand
Amelanchier laevis is a deciduous tree grown as an ornamental, with edible fruit…
Amelanchier ovalis Medik.
Amelanchier ovalis Medik.
Amelanchier ovalis is the only native European Amelanchier shrub, used for resto…
Amelanchier utahensis Koehne
Amelanchier utahensis Koehne
Amelanchier utahensis, the Utah serviceberry, is a North American deciduous shru…
Amianthium muscitoxicum (Walter) A.Gray
Amianthium muscitoxicum (Walter) A.Gray
Amianthium muscitoxicum is a poisonous eastern US native perennial, historically…
Ammannia coccinea Rottb.
Ammannia coccinea Rottb.
Ammannia coccinea is an annual loosestrife family flowering plant native to most…
