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Botanical Glossary

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Bast bundlesbundles of thick-walled cells parallel to the midrib, as in Isoetes
BeakPersistent stylar base on fruit
BeardA tuft, line or zone of trichomesg-beard.png
BeardedWith long trichomes usually in a tuft, line or zoneg-beard.png
BentFoliate embryo with expanded and usually thick cotyledons in an axile position bent upon the hypocot...g-bent.png
BerryA fleshy fruit that does not split open at maturity (indehiscent), with few or more seeds (rarely ju...g-berry.png
BibaccaA fused double berry, as in Lonicera
BicrenateWith smaller rounded teeth on larger rounded teeth
BiduousLasting two days
BiennialNormally living two years; germinating or forming and growing vegetatively during one cycle of seaso...
BiferousAppearing twice yearly
BifidCut or divided into two lobes or parts
BiflorousFlowering in autumn as well as in spring
BifoliolateCompound with two leaflets; two-leafleted or geminate. (Compare with bigeminate and trifoliolate.)g-bifoliolate.png
BifurcateDivided into two forks or branches
BigeminateWith two orders of leaflets, each divided into pairs or geminately compound; doubly paired. (Compare...g-bigeminate.png
BijugateWith two orders of leaflets, each bifoliolate; doubly paired.
BilabiateTwo-lipped, with two unequal divisionsg-bilabiate.png
BilateralWith floral parts in two symmetrical halves
Bilaterally symmetricDivisible into two essentially equal portions along only one plane. (Compare with asymmetric and rad...
BimestrialPeriodicity: occurring every two months; duration: lasting two months
BipalmateTwice palmateg-bipalmate.png
Bipalmately compoundWith two orders of leaflets, each palmately compound; twice palmately compound. (Compare with once p...g-bipalmate.png
BipinnateTwice pinnate; with the divisions again pinnately divided.g-bipinnate.png
Bipinnate-pinnatifidTwice pinnately compound with pinnatifid leaflets. (Compare with once pinnate-pinnatifid and tripinn...
Bipinnately compoundWith two orders of leaflets, each pinnately compound; twice pinnately compound. (Compare with once p...g-bipinnate.png
Bipinnately lobedWith two orders of leaf lobing, each pinnately lobed; twice pinnately lobed. (Compare with once pinn...
BiseriateTwo-rowed; in two series
BiserrateWith sharply cut teeth on the margins of larger sharply cut teeth
BisexualHaving functional reproductive structures of both sexes (i.e. male and female) in the same flower or...
BiternateWith two orders of leaflets, each divided into threes or ternately compound; twice trifoliolate. (Co...g-biternate.png
BladeThe flat, expanded portion of a leaf, petal, sepal, etc.
Blade-likeExpanded and flattened, as the main portion or blade of a broad leaf. (Compare with glandular, scale...
BlastocarpousGermination of seeds while within the pericarp, as in Rhizophora
BlotchedThe color disposed in broad, irregular blotches.
BoleThe main stem or trunk of a tree.
BorderedOne color is surrounded by an edging of another. (Compare with edged.)
BostryxA determinate inflorescence in which the branches develop on one side only, appearing simple.
BotanyThe scientific study of plants.
BrackishOf or pertaining to water having a salt concentration of 0.5-30 parts per thousand.
BractA modified, usually reduced leaf, often occurring at the base of a flower or inflorescence.
Bracteal and LaminarMay be localized or found over entire structure
BracteoleSmall leaf, usually on a pedicel.
BractletA secondary or smaller bract.
BranchA division or subdivision of a stem or other axis.
BranchletAn ultimate branch, i.e. one located at the end of a system of branches; a small branch. (Compare wi...
BristleA slender, more or less straight and stiff, fine-pointed appendage; may be located at the tip of a l...g-bristle.png
BristlyBeset with bristlesg-bristly.png
Broad embryoBasal, globular or lenticular embryo in copious endosperm.g-broad-embyro.png
Broad-leavedWith leaves that are not needle-like or scale-like, but having relatively broad, flat surfaces, as i...
Broadleaf herbaceousHerbaceous with relatively broad leaves, thus differing from the long, narrow leaves of grasses (Poa...
BrochidodromousWith a single primary vein, the secondary veins not terminating at the margin but joined together in...
BryophytesThe non-vascular plants including the mosses, liverworts, and hornworts; members of the division Bry...
BudAn immature shoot, either vegetative, floral or both, and often covered by protective scales.
Bud PrimordiumMeristematic tissue that gives rise to a lateral bud.
BulbA short, vertical, usually underground stem with fleshy storage leaves attached, as in onions (Alliu...g-bulb.png
BulbelA small bulb produced from the base of a larger bulb
BulbilA small bulb or bulb-like body produced on above ground partsg-bulbil.png
BulbletA small bulb, irrespective of origin; a small, bud-like vegetative propagule produced on the leaves ...g-bulblet.png
BullatePuckered or blistered
Bundle scarA small scar within a leaf scar left by a vascular bundle that previously entered the stalk (petiole...g-leaf-scar.png
BurA cypsela or other fruit enclosed in a whorl of dry bracts (involucre) covered with spines or prickl...g-bur.png
ButtressRoots with board-like or plank-like growth on upper side, presumably a supporting structureg-buttress.png
CaducousFalling off very early, as stipules that drop soon after the leaf develops. (Compare with persistent...
CalceolateSlipper-shaped, as in the corolla of Cypripediumg-calceolate.png
CallosityA thickened, raised area, which is usually hard; a callus
CalybiumA hard one-loculed dry fruit derived from an inferior ovary, as in Quercusg-calybium.png
CalycleA whorl of bracts below but resembling a true calyx.
CalyxThe collective term for all of the sepals of a flower; the outer perianth whorl. (Compare with corol...g-gynoecium.png
CambiumA layer of living cells in a woody plant, such as a tree, between the bark and the wood of the stem....
CampanulateBell-shaped; with flaring tube about as broad as long and a flaring limbg-campanulate.png
CampylodromousWith several primary veins or their branches diverging at or close to a single point and running in ...
CampylotropousWith body bent or curved on one side so that micropyle is near medially attached funiculusg-campylotropous.png
CanaliculateLongitudinally grooved, usually in relation to petioles or midribs
CanescentGray or white in color due to a covering of short, fine, gray or white hairs.g-canescent.png
CanopyThe upper layer of forest, formed by interlacing branches and leaves.
CantharophilyPollinated by beetles
CapillateHair-shapedCapitate. Head-like Capitulum or Head. A determinate or indeterminate crowded group o...
CapitulumA determinate or indeterminate crowded group of sessile or subsessile flowers on a compound receptac...
CapsuleA dry fruit that opens (dehisces) in any of various ways at maturity to release few to many seeds.g-capsule.png
CarinaKeel. Carinal Canal - A canal beneath a stem ridge associated with a vascular bundleg-carina.png
Carinal CanalA canal beneath a stem ridge associated with a vascular bundle.
CarnivorousCapturing animals (usually insects), digesting their tissues and assimilating the digested substance...
Carnivorous plantsThose that are able to digest and absorb nutrient elements from the bodies of animals, mainly insect...
CarpelThe basic ovule-bearing unit of flowers, thought to be evolutionarily derived from an infolded leaf-...g-carpel.png
CarpellatePlant with pistillate flowers only
CarpophoreFloral axis extension between adjacent carpels, as in the Apiaceae
CarpopodiumShort, thick, pistillate stalk
CarpotaxisArrangement of fruits, reproductive in function
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