Plants — 23,508 Species

Harlequin flower

Sparaxis tricolor (Schneev.) Ker Gawl.

Sparaxis tricolor is a bulb-forming perennial native to South Africa, introduced to California and Australia, known for its colorful multihued flowers.

American bur-reed

Sparganium americanum Nutt.

Sparganium americanum (American bur-reed) is a perennial monocot wetland plant native to the US and Canada that provides wildlife food and helps retain nutrients from runoff.

Narrow-leaved Bur-reed

Sparganium angustifolium Michx.

Sparganium angustifolium, or floating/narrowleaf bur-reed, is a circumboreal aquatic perennial herb in the cattail family.

unbranched bur-reed

Sparganium emersum Rehmann

Sparganium emersum is a circumboreal perennial aquatic flowering plant in the cattail family, commonly called European or unbranched bur-reed.

Branched Bur-reed

Sparganium erectum L.

Sparganium erectum, simplestem or branched bur-reed, is a perennial Sparganium species fed on by Plusia festucae moth larvae.

big bur-reed

Sparganium eurycarpum Engelm.

Sparganium eurycarpum Engelm. (broadfruit/giant bur-reed) is a perennial wetland plant native to Eurasia and North America, eaten by muskrats and waterfowl.

Sparganium gramineum Georgi

Sparganium gramineum Georgi

Sparganium gramineum is a flowering plant species in the Typhaceae family native from Norway to Japan.

Spanish Broom

Spartium junceum L.

Spartium junceum is a toxic Mediterranean deciduous shrub grown as an ornamental with various traditional uses.

White Spoon

Spatalla curvifolia Knight

Spatalla curvifolia Knight is a low, rounded flowering shrub from South Africa that survives fire via seeds.

Silky Spoon

Spatalla squamata Meisn.

Spatalla squamata, the silky spoon, is a fynbos endemic flowering shrub from the Western Cape, South Africa.

African tulip tree

Spathodea campanulata Beauverd

Spathodea campanulata Beauverd is a tree that is native to Africa, invasive in many tropical regions, with water-holding flower buds used for play.

Philippine Ground Orchid

Spathoglottis plicata Blume

Spathoglottis plicata is an evergreen terrestrial orchid widely distributed across Asia, Oceania and Australia, commonly used in horticulture.

Corn spurrey

Spergula arvensis L.

Spergula arvensis L., or corn spurry, is an annual broadleaf weed that spreads via seeds, with oxalates toxic to livestock in large amounts.

Pearlwort Spurrey

Spergula morisonii Boreau

Morison's spurry (Spergula morisonii) is a flowering Caryophyllaceae species native to Europe and northwestern Africa.

Saltmarsh Sand Spurry

Spergularia marina (L.) Besser

Spergularia marina is a salt-tolerant flowering plant in the pink family, commonly called salt sandspurry or lesser sea-spurrey.

Greater Sea-spurry

Spergularia media (L.) C.Presl

Spergularia media is an annual or perennial herb with fleshy leaves, small white to pinkish flowers, and winged tiny seeds.

Red Sand Spurrey

Spergularia rubra (L.) J.Presl & C.Presl

Spergularia rubra is a herb in the Caryophyllaceae family native to Eurasia and North Africa, often a common introduced weed elsewhere.

oval-leaf false-buttonweed

Spermacoce latifolia Aubl.

Spermacoce latifolia Aubl. (syn. Spermacoce alata) is a perennial herb native to the Americas and naturalized across tropical regions of the Old World.

Woodland false buttonweed

Spermacoce remota Lam.

Spermacoce remota, woodland false buttonweed, is a Rubiaceae species native to the Americas and naturalized widely across the Old World and Pacific islands.

shrubby false buttonweed

Spermacoce verticillata L.

apricot mallow

Sphaeralcea ambigua A.Gray

Sphaeralcea ambigua (desert globemallow) is a desert native ornamental plant used for food and medicine by Indigenous peoples.

narrowleaf globemallow

Sphaeralcea angustifolia (Cav.) G.Don

Sphaeralcea angustifolia is a mallow species native to the southwestern US and northern/central Mexico, with orange flowers.

Latin globemallow

Sphaeralcea bonariensis (Cav.) Griseb.

Scarlet Globemallow

Sphaeralcea coccinea (Nutt.) Rydb.

Sphaeralcea coccinea is a spreading perennial North American plant with traditional and modern erosion-control uses.