spurflowers
plural of spurflower

spurge
Any plant of the genus Euphorbia, a diverse genus of over 2,000 species.
Any plant of the spurge family, Euphorbiaceae.
A plant resembling those in genus Euphorbia in some aspect of its appearance.

spurged
simple past and past participle of spurge

spurges
plural of spurge

spurgewort
Any euphorbiaceous plant.

spurgeworts
plural of spurgewort

spyce
Obsolete form of spice.

spyces
plural of spyce

squamella
A diminutive scale or bractlet, such as those found on the receptacle in many composite plants; a palea.

squamellae
plural of squamella

squamellas
plural of squamella

squantersquash
Squash (the plant or vegetable).

squantersquashes
plural of squantersquash

squawweed
Any of several species of plants of North America:
Any of several species of plants of North America:
Any of several species of plants of North America:
Any of several species of plants of North America:
Any of several species of plants of North America:
Any of several species of plants of North America:
Any of several species of plants of North America:

squawweeds
plural of squawweed

squitch
quitchgrass

stabwort
Aster atticus, the European Michaelmas daisy.

stackage
Hay, grain, etc. in stacks; things stacked.
A tax on things stacked.

stackages
plural of stackage

stackstand
A stand for supporting a haystack or grain stack; a rickstand.

stackstands
plural of stackstand

stag's-horn clubmoss
Lycopodium clavatum, a club moss in the family Lycopodiaceae.

staghorn clubmoss
A widespread, tropical lycophyte of species Palhinhaea cernua.

stallon
A slip from a plant; a scion; a cutting.

stallons
plural of stallon

standel
a young tree, especially one reserved when others are cut.

standels
plural of standel

standergrass
The plant Orchis mascula.

standerwort
Synonym of standergrass.

starthistle
Any of the genus Centaurea of herbaceous thistle-like flowering plants.

starthistles
plural of starthistle

starviolet
Any plant of species of genus Hedyotis.
Certain other plants of genera Exallage and Stenaria, that have similar flowers.

starviolets
plural of starviolet

starweed
Cerastium fontanum, a mat-forming plant, native to Europe, with small white flowers and tear-shaped leaves that grow opposite one another in a star pattern.

staurotheke
A reliquary containing fragments of the True Cross.

staurothekes
plural of staurotheke

stavewood
Simarouba amara or Quassia amara, a tall tree of tropical America, one of the trees that yield quassia.

stavewoods
plural of stavewood

steekgras
The tropical perennial tussock grass Heteropogon contortus.

steeplebush
A plant with narrow pyramidal clusters of flowers and a dense woolly tomentum.
A plant with narrow pyramidal clusters of flowers and a dense woolly tomentum.
A plant with narrow pyramidal clusters of flowers and a dense woolly tomentum.

steeplebushes
plural of steeplebush

stembark
The bark from the stem of a woody plant.

stembarks
plural of stembark

stemflow
The flow of intercepted water down the trunk or stem of a plant.

stemflows
plural of stemflow

stemona
Any plant in the genus Stemona (formerly known as Roxburghia)
The species used in traditional Chinese medicine under the name 百部 (bǎibù)/百步 (bǎibù), including Stemona japonica, Stemona sessilifolia and Stemona tuberosa (perhaps also Stemona parviflora).

stemonas
plural of stemona

stemwood
The wood of the stem of a tree

stenonid
Any plant of the genus Stenonia

stenonids
plural of stenonid

stenospermocarpy
The development or production of fruit that is seedless or has minute seeds because of the abortion of seed development

stereid
A plant cell with thickened cell walls providing mechanical support.

stereids
plural of stereid

stichidia
plural of stichidium

stichidium
A special pod-like or fusiform branch containing tetraspores, found in certain red algae.

stickaburr
The grass Cenchrus echinatus

stickaburrs
plural of stickaburr

sticklewort
Agrimonia eupatoria (agrimony)

stigmaria
The fossilized roots of a plant of the genus Sigillaria.

stigmarias
plural of stigmaria

stillingia
Any plant of the genus Stillingia.

stillingias
plural of stillingia

stiltgrass
Japanese stiltgrass, an annual grass of species Microstegium vimineum, native to East Asia, often considered invasive.

stinkbush
star anise plant

stinkbushes
plural of stinkbush

stinkwort
The plant Dittrichia graveolens.

stipa
Any grass of the genus Stipa.

stipas
plural of stipa

stipula
A stipule.
A newly-sprouted feather.

stipulae
plural of stipula

stipule
A basal appendage of a typical leaf of a flowering plant, usually appearing paired beside the petiole although sometimes absent or highly modified.

stipules
plural of stipule

stolbur
A parasitic phytoplasma; the plant disease caused by this

stolon
A shoot that grows along the ground and produces roots at its nodes; a runner.
A structure formed by some colonial organisms from which offspring are produced by budding, found in bryozoans, pterobranchs, some corals, and other invertebrates.
A hypha that acts as a runner, connecting sporangiophores.

stolons
plural of stolon

stonecrop
Any of various succulent plants of the Crassulaceae family, native to temperate zones, especially in genus Sedum
Certain plants of genus Lithospermum, in family Boraginaceae.

stoneseed
Any plant of the genus Lithospermum, herbs having a fruit composed of four stony nutlets.

stoneseeds
plural of stoneseed

stonewood
A plant in the myrtle family, endemic to eastern Australia, of species Melaleuca salicina.

stonewort
Any of various complex algae of the family Characeae, known for being branched and having enclosed egg cells.

stoneworts
plural of stonewort

storksbill
Any plant of genus Pelargonium.
Any plant of genus Erodium.

storksbills
plural of storksbill

straighthead
A disease of the rice plant that causes sterility in the grain.

straightneck
A usually yellow variety of squash (vegetable).

stramma
rope grass, Ampelodesmos mauritanicus

stramony
Stramonium; jimsonweed, thornapple.

strangleweed
dodder, a parasitic plant (genus Cuscuta)

strapwort
The plant Corrigiola litoralis.

strapworts
plural of strapwort

stringbush
The plant Varronia cylindrostachya (syn. Cordia cylindrostachya).
Any of various plants of the genus Wikstroemia.

stripleaf
tobacco that has been stripped of the stalks before packing

stromule
A microscopic stroma-filled tubule found in plant cells such as chloroplasts

stromules
plural of stromule

strophiole
An excrescence or tubercle around the hilum of certain seeds.

strophioles
plural of strophiole

stubbard
A variety of apple.

stubbards
plural of stubbard

stumphole
A hole in the ground left when a tree stump is removed.

stumpholes
plural of stumphole

subabul
A tree of species Leucaena leucocephala.

subabuls
plural of subabul

subgrain
A distinct part of a grain

subgrains
plural of subgrain

subleaf
A smaller leaf making up part of a larger leaf.
A particular value of the ECX register when a program runs the CPUID instruction within a certain leaf (the value of EAX); each subleaf represents a specific category of information returned about the processor.

subleaves
plural of subleaf

subscaffold
The branches of a tree underneath the main scaffold

subscaffolds
plural of subscaffold

subshrub
A low-growing woody shrub or perennial with woody base.

subshrubs
plural of subshrub

substem
One of several plant stems splitting off from a main stem.
Part of a stem.

substems
plural of substem

subsymmetries
plural of subsymmetry

subsymmetry
an infinitesimal transformation that leaves only a part (a sub-system) of a larger system invariant, rather than the entire system

subtree
A tree wholly contained in another.

subtrees
plural of subtree

subumbel
The underneath of an umbel

subumbels
plural of subumbel

succedaneaflavanone
A particular biflavonoid found in the plant Rhus succedanea.

succi
plural of succus

succus
The expressed juice or sap of a plant, often for medicinal use