solamargine
A poisonous solanigrine found in plants of the family Solanaceae.

solandra
Any plant of the genus Solandra.

solandras
plural of solandra

solanum
Any plant in the genus Solanum.
A traditional green vegetable in the genus Solanum, specifically Solanum nigrum, and sometimes Solanum macrocarpon, Solanum scabrum, and Solanum villosum.

solanums
plural of solanum

soldierbush
Any of various plants of the genus Tournefortia.

soldierbushes
plural of soldierbush

soliflor
A vase designed to hold a single flower

soliflors
plural of soliflor

sollya
Any plant of the genus Billardiera.

sollyas
plural of sollya

somaclone
A plant produced from another by tissue culture

somaclones
plural of somaclone

sophoradin
An isoprenyl chalconoid found in the herb Sophora tonkinensis.

sophoraflavanone
Any of a group of phytoncides produced by plants of the genus Sophora.

sophoraflavanones
plural of sophoraflavanone

sophrocattleya
Any plant of the genus Sophrocattleya.

sophrocattleyas
plural of sophrocattleya

sorbus
Any plant of the genus Sorbus.

sorbuses
plural of sorbus

sorophore
A sorus-bearing structure in certain ferns.

sorophores
plural of sorophore

sourdock
A common name for rumex arcticus, a perennial flowering plant that is native to Alaska.

sourdocks
plural of sourdock

sourplum
a type of tree found in South East Africa (Ximenia afra)

sourweed
The plant Rumex acetosella.

soyhull
The hull of a soybean used as fodder

spangletop
A grass of the genus Leptochloa.

spargana
plural of sparganum

sparganum
The plerocercoid larva of Spirometra tapeworms, responsible for sparganosis.

sparteries
plural of spartery

spartery
Braided plant fibers used in making hats.

spath
Any plant of the genus Spathiphyllum of peace lilies.

spathiphyllum
Any plant of the genus Spathiphyllum.

spathiphyllums
plural of spathiphyllum

spaths
plural of spath

spearbush
A plant native to Australia, Pandorea doratoxylon.

speedwell
A plant of the genus Veronica

speiranthy
Alternative form of spiranthy.

speirochore
Any speirochoric plant.

speirochores
plural of speirochore

speirochory
The unintentional introduction of plants into an area by means of contaminated seed.

spekboom
A South African shrub (Portulacaria afra), whose succulent leaves are used as fodder.

spekbooms
plural of spekboom

spermaphyte
Alternative form of spermatophyte.

spermaphytes
plural of spermaphyte

spermatophyte
Any plant that bears seeds rather than spores

spermatophytes
plural of spermatophyte

spermatozoid
A motile, ciliated male gamete produced in the antheridium of an alga, fern or gymnosperm.

spermatozoids
plural of spermatozoid

spermatozooid
Alternative form of spermatozoid.

spermatozooids
plural of spermatozooid

spermophyte
Alternative form of spermatophyte.

spermophytes
plural of spermophyte

sphaeraphides
plural of sphaeraphis

sphaeraphis
A spherical aggregation of raphides in a plant cell

sphaerospore
One of the non-sexual spores found in red algae; a tetraspore.

sphaerospores
plural of sphaerospore

sphagnid
Any sphagnum moss in the subclass Sphagnidae.

sphagnids
plural of sphagnid

sphenophyte
Any of an ancient type of simple vascular plants of which only the horsetails remain which have hollow stems that produce spores

sphenophytes
plural of sphenophyte

sphenopsid
Any horsetail of the former order Sphenopsida, now Equisetopsida

sphenopsids
plural of sphenopsid

sphenopterid
Any seed fern of the family †Sphenopteridae.

spherosome
A small plant organelle that stores fat

spherosomes
plural of spherosome

sphrigosis
In a tree, excessive growth of wood and leaves at the expense of fruit.

spice
Aromatic or pungent plant matter (usually dried) used to season or flavor food.
The quality of being spicy.
Appeal, interest; an attribute that makes something appealing, interesting, or engaging.
A psychoactive neocannabinoid.
Sweets, candy.
Species; kind.
A characteristic touch or taste; smack; flavour.
An aromatic odor.
Erotic or pornographic material, usually written; smut.
An additional input parameter used as a secondary, non-secret key in the Hasty Pudding cipher.

spicebag
Alternative spelling of spice bag.

spicebags
plural of spicebag

spiced
Having spice added, spicy.

spices
plural of spice

spicewood
An American shrub, the spicebush (Lindera benzoin), whose bark has a citrusy taste and odor.

spicewoods
plural of spicewood

spider flower
Any of various plants of the genus Cleome.
Any of various Australian plants within the genus Grevillea.

spider flowers
plural of spider flower

spider lilies
plural of spider lily

spider lily
Any of a number of different plant species within the family Amaryllidaceae in the genera Crinum, Hymenocallis, and Lycoris.
Certain plants of genus Nerine.

spider plant
Any of several types of plants that have leaves or other parts that resemble spider legs, including:
Any of several types of plants that have leaves or other parts that resemble spider legs, including:
Any of several types of plants that have leaves or other parts that resemble spider legs, including:
Any of several types of plants that have leaves or other parts that resemble spider legs, including:

spider plants
plural of spider plant

spiderwood
Synonym of neinei.

spikelet
A small, or secondary spike, especially one of many in the inflorescence of a grass or sedge.

spikelets
plural of spikelet

spikemoss
Alternative spelling of spike moss.

spikemosses
plural of spikemoss

spinifex
Any of numerous species of grass in genus Spinifex, growing in sand dunes.
Any of several spiny grass species of the genus Triodia, endemic to arid outback Australia.

spinifexes
plural of spinifex

spiralglass
Any of grass species of the genus Tuctoria.

spiranthy
The occasional twisted growth of the parts of a flower.

spirogyra
Any of a group of freshwater, filamentous green algae, of the genus Spirogyra, having chloroplasts arranged in spirals.

spirogyras
plural of spirogyra

spirolide
Any of a group of toxic macrolides present in some marine algae

spirolides
plural of spirolide

splitstree
A phylogenetic tree constructed by SplitsTree

splitstrees
plural of splitstree

spoonflower
A plant, the yautia (Xanthosoma sagittifolium).
A plant, white arrow arum (Peltandra sagittifolia)

spoonflowers
plural of spoonflower

sporeling
A young plant or fungus produced by a germinated spore

sporelings
plural of sporeling

sporinite
An exinite maceral found in coal formed from spores and pollen.

sporinites
plural of sporinite

sporocarp
The structure on a fungus and some algae which houses the spore-producing organs.

sporocarpium
sporocarp

sporocarps
plural of sporocarp

sporogen
A plant that bears spores; a cryptogam.

sporogens
plural of sporogen

sporogone
Synonym of sporogonium.

sporogones
plural of sporogone

sporogonia
plural of sporogonium

sporogonium
The sporophyte of a bryophyte (moss, liverwort or hornwort), generally consisting of a foot, seta and capsule.

sporomorph
A fossil pollen grain or spore

sporomorphs
plural of sporomorph

sporophyte
A plant (or the diploid phase in its life cycle) which produces spores by meiosis in order to produce gametophytes.

sporophytes
plural of sporophyte

sporopollen
pollen composed of spores

sporosphere
The compartment of a plant containing spores

sporospheres
plural of sporosphere

sporostegia
plural of sporostegium

sporostegium
The so-called fruit of plants in the family Characeae of green algae, consisting of the hard brownish spirally-twisted shell or covering of the spore.

sporozoid
A zoospore.
A sporozoan.

sporozoids
plural of sporozoid

spotflower
Any flower of the genus Acmella.

spring fumewort
Synonym of bird-in-a-bush

spring fumeworts
plural of spring fumewort

spring quillwort
A quillwort of species Isoetes echinospora, widespread in cooler North America and found also in the Black Forest in Germany.

springwort
The plant St. John's wort.

spurflower
Any of various plants of the genus Plectranthus.