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Vegetative Terminology
Plant ID words to know
202
Biology
Undergraduate 3
08/21/2012

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Term
Annual
Definition
lives for one year or less
Term
Biennial
Definition
lives for 2 years with only vegetative growth in first year and flowers and fruits in the second
Term
Perennial
Definition
lives for 3 years or more
Term
Herbaceous
Definition
little or no above ground woody tissue
complete die down
Term
Shrub
Definition
Woody perennials with more than one stem arising from ground
Term
Tree
Definition
woody perrennials with single stem or trunk
Term
Vine
Definition
woody or herbaceous with climbing self supporting stems
Term
Acaulaescent
Definition
more or less stemless (all basal leaves)
Term
Caulescent
Definition
Aerial stem or stems evident
Term
Scapose
Definition
Bearing flower or inflorescence on a leafless stem
Term
Caespitose
Definition
growing in tufts, mats, or clumps
Term
Prostrate
Definition
lying flat on the ground
Term
Tap Root
Definition
one large well definded root
Term
Fibrous root
Definition
clump of many roots of all the same size
Term
Adventitious root
Definition
roots that arise from any point other than primary root tissue
Term
stolon
Definition
horizontal, above ground stem
Term
Rhizome
Definition
underground, horizontal stem
Term
Bulb
Definition
a short stem with large fleshy storage leaves
Term
Corm
Definition
A rounded underground storage organ consisting of a swollen stem base covered with scale leaves
Term
Tuber
Definition
a solid, enlarged, horizontal shortened stem q
Term
Petiole
Definition
short stalk that attaches blade to stem
Term
stipule
Definition
pair of appendeges that is the base of a petiole where attached to stem
Term
abaxial
Definition
the side of the leaf that faces towards the axis (top)
Term
adaxial
Definition
the side of the leaf that faces away from the axis (bottom)
Term
decurrent
Definition
extending downward from foint of insersion on stem
Term
petiolate
Definition
petiole attaches leaf to stem
Term
sessile
Definition
leaf attaches directly to the stem
Term
sheathing
Definition
leaf base forms a sheath as it surrounds the stem
Term
Alternate leaves
Definition
one leaf per node
Term
Opposite leaves
Definition
two leaves per node
Term
Whorled leaves
Definition
three or more leaves per node
Term
Basal leaves
Definition
leaves at base of plant
Term
Decussate leaves
Definition
opposite leaves which alternate as they go down the stem
Term
Distichous leaves
Definition
on opposing side of stem
Term
Simple leaves
Definition
leaves that are not separated into leaflets
Term
Compound leaves
Definition
divided into leaf segments called leaflets
Term
Blade
Definition
actual leaf
Term
[image]
Definition
Palmately compund
Term
[image]
Definition
Ternately compound
Term
[image]
Definition
Evenn pinnately compound
Term
[image]
Definition
Odd pinnately compound
Term
[image]
Definition
Bipinnately compound
Term
[image]
Definition
Linear Leaf
Term
[image]
Definition
Elliptic Leaf
Term
[image]
Definition
Reniform leaf
Term
[image]
Definition

Lanceolate 

widest at base 

Term
[image]
Definition

Ovate leaf 

widests at base 

Term
[image]
Definition

Cordate leaf

widest at base 

Term
[image]
Definition
Hastate leaf
Term
[image]
Definition

Pinnate 

pominent mid bein with secondary veins diverging from it 

Term
[image]
Definition

Oblanceolate 

widest at top 

Term
[image]
Definition

Obovate 

widest at the top 

Term
[image]
Definition

Obcordate 

heart shaped widest at the top 

Term
[image]
Definition

Saggitate leaf 

thinner at base than hastate 

Term
[image]
Definition

Parallel veins 

run parallel to each other 

Term
[image]
Definition

Palmately veined leaf 

major veins come from one major point 

Term
[image]
Definition

Acute apex 

very common 

tapers to a pointed apex with tapered sides (pointed tip) 

Term
[image]
Definition

Acuminate apex 

sharp point with concave sides that lead to tip 

Term
[image]
Definition

Obtuse apex 

rounded tip 

Term
[image]
Definition

Mucronate apex 

comes to a short sharp tip 

Term
[image]
Definition

Acute leaf base 

tapers to a base 

Term
[image]
Definition

rounded leaf base 

round base 

Term
[image]
Definition

Truncate leaf base 

square base 

Term
[image]
Definition

Cuneate leaf base 

wedge shaped 

Term
[image]
Definition

Cordate leaf base 

heart shaped base 

Term
[image]
Definition

Oblique leaf base 

unequal sides of base 

Term
[image]
Definition

Perfoliate leaf base 

completely encircles stem 

Term
[image]
Definition

Entire leaf margin 

smooth edge, no teeth , no notches or divides 

Term
[image]
Definition

Crenate leaf margins 

rounded teeth 

Term
[image]
Definition

Dentate leaf margins 

Pointed teeth that point out 

Term
[image]
Definition

Serrate leaf margins 

pointed teeth that point up 

Term
[image]
Definition

Lobed leaf margins 

with lobes 

Term
[image]
Definition

Cleft leaf margin 

cut or split half-way (or more) to the middle or base 

Term
Glabrous
Definition
Not hairy, surface smooth
Term
Glandular
Definition
Gland tiped hair (sticky feeling)
Term
Hirsute
Definition
coarse, stiff hairs
Term
Pilose
Definition
fine, short, sparse hairs
Term
Puberulent
Definition
minute short downy hairs
Term
stellate
Definition
Hairs that branched at or near the base (star shaped)
Term
tomentose
Definition
covering of short, matted tangled, soft hairs
Term
villous
Definition
long soft shaggy hairs but not matted or tangled
Term
Tendrils
Definition
twining structure which plants use to grasp onto objects. May be a modified stem or leaf
Term
Spines
Definition
Sharp, Stiff, they hurt
modified leaf or stipule (remember stipules come in pairs)
Term
Thorns
Definition
woody sharp pointed modified stems
Term
prickles
Definition
sharp, non woody structures developed from the outgrowth of the surface of the bark or epidermis
Term
Complete Flower
Definition
flower with all four series
Term
4 series of a flower
Definition
1.Sepals 2.Petals 3.Stamen 4.Pistol
Term
Incomplete Flower
Definition
Flower with one or more missing series
Term
Perfect flower
Definition
bisexual- both male and female parts on same flower
Term
Imperfect Flower
Definition
Flower with either male or female parts
Term
Monoecious plant
Definition
plant with both staminate and pistilate flower
Term
Dioecious
Definition
Plant with only male or female flowers on one plant
Term
Apetalous
Definition
without petals
Term
Asepalous
Definition
without sepals
Term
Polysepalous
Definition
separate sepals
Term
Polypetalous
Definition
with separate petals
Term
distinct
Definition
separateness of like parts
Term
Connate
Definition
fusion of like parts
Term
Adnate
Definition
Fusion of unlike parts
Term
Sunsepalous
Definition
fused sepals
Term
Sympetalous
Definition
fused petals
Term
Hypanthium
Definition
Cup like structure formed by the fusion of the basal parts of the calyx corrolla and andoecium
Term
Actionomorphic
Definition
radial symmetry
Term
Zygomorphic
Definition
bilateral symmetry
Term
Staminode
Definition
steril antherless stamen
Term
monadelphous
Definition
stamens united by filaments
Term
Diadelphous
Definition
Stamens united by their filaments into two groups
Term
Didynamous
Definition
four stamens, 2 long and 2 short
Term
Tetradynamous
Definition
6 staments, 4 long and 2 short
Term
Peduncle
Definition
supporting stalk of an inflorescense
Term
Pedicle
Definition
the stalk of an individual flower
Term
Rachis
Definition
central axis of an inflorescence
Term
Axillary
Definition
inflorescence that arise from the axis of leaves growing on shoots
Term
Terminal
Definition
Inflorescence occure at the end of shooot or stem
Term
Dehiscent
Definition
a fruit with opens by sutures, pores, or caps
Term
Indehiscent
Definition
a fruit which does not open
Term
pericarp
Definition
the fruit wall
Term
Accessory fruit
Definition
fruit formed from the expanded dome-like receptacle of a single flower (Strawberry)
Term
Multiple Fruit
Definition
Fruit derived from the fusion of an entire inflorescence (pineapple)
Term
Aggregate fruit
Definition
Formed from many separate dry or fleshy fruits of a single flower (raspberry)
Term
[image]
Definition

Campanulate Corolla 

Bell shaped 

Term
[image]
Definition

Biabiate 

Two lipped 

corolla is zygomorphic, sympetulous 

Term
[image]
Definition

Funnelform 

Funnel Shaped 

Term
[image]
Definition

Salverform 

tube elongated with a flat expanded limb 

Term
[image]
Definition

Urceolate 

urn shaped 

Term
[image]
Definition

Rotate Corolla 

disk shaped, flat and fircular 

sympetalous with widely spreading lobes and little or no tube

Term
Carpel
Definition
made up of stigma, style and ovary
female reproductive organ
Term
Locule
Definition
chamber within the ovary
Term
Ovule
Definition
immature seed
Term
Placenta
Definition
region or line along which ovules are attached
Term
septum
Definition
an interior wall which separates the locules
Term
Unicarpellate
Definition
Gynoecium with one carpel
Term
Polycarpous
Definition
two or more separate carpels
Term
Syncarpous
Definition
two or more fused carpels
Term
[image]
Definition

Marginal

ovary with a single locule, attached along suture line

Term
[image]
Definition

Parietal

ovules attached to the walls of the ovules

Term
[image]
Definition

Axile

Ovules attached to the central axis of the ovary with two or more locules

Term
[image]
Definition

Free Central

attached to a free standing column in the center of a unilocular ovary

Term
[image]
Definition

Basal

Ovules attached to the base of a single loculed ovary

Term
[image]
Definition

Perigynous 

the sepals, petals and stames are united by lower portions into a hypanthium, this is where the ovary sits 

Term
[image]
Definition

Epigynous 

inferior ovary with or without a hypanthium 

Term
[image]
Definition

Hypongynous 

sepals, petals and stamens are inserted beneath the ovary 

Term
[image]
Definition
Umble 
Term
[image]
Definition

Catkin 

dense spike or raceme without petals 

imperfect flower 

Term
[image]
Definition

Compound umble 

 

Term
[image]
Definition

Corymb 

varying length pediciles 

Term
[image]
Definition

Cyme 

terminal flower blooms first 

Term
[image]
Definition
Panicle 
Term
[image]
Definition

Heads 

dense cluster of sessile or subsessile flowers 

Term
[image]
Definition
raceme
Term
[image]
Definition

Spike 

 

Term
[image]
Definition

Achene 

dry, indehiscant fruit with a single locule and single seed 

Term
[image]
Definition

Utricle 

small bladdery achene like fruit with the seed loosely surrounded by fruit wall 

Term
[image]
Definition

Samara 

winged achene 

Term
[image]
Definition

Caryopsis 

grain 

seed and pericarp completely fused 

Term
[image]
Definition

Nut 

hard dry indehiscent fruit with usually one seed

Term
[image]
Definition

Schizocarp 

dry, indeniscent fruit that splits into sparate, one seeded segments 

Term
Capsule 
Definition
dry dehiscent fruit composed of more than one carple 
Term
[image]
Definition

Poricidal Capsule 

opens by a series of pores near the top 

Term
[image]
Definition

Denticidal Capsule 

opens apically, leaving a ring of teeth 

Term
[image]
Definition

Loculicidal Capsule 

splits lengthwise, with the sutures opening within a locule 

Term
[image]
Definition

Septicidal Capsule 

splits lengthwise with sugures splitting at septum 

Term
[image]
Definition

Pyxis 

opening by lid 

Term
[image]
Definition

Legume 

unicarpellate, dehiscing along both sutures 

Term
[image]
Definition

Follicle 

unicarpellate, opens on one side of fruit 

Term
[image]
Definition

Silique fruit 

dry dehiscent fruits produced by mustard plant that has two valves separated by a false sepum 

Term
[image]
Definition

Silicle 

dry dehiscent fruits

two halves separated by false sepum 

Term
Berry 
Definition
Soft pericarp with no hard pit or core
Term
Drupe 
Definition
like a berry but with stody pit 
Term
[image]
Definition

Hesperidium 

citris fruit, tough rind, ovary supirior 

 

Term
[image]
Definition

Drupelet 

small cluster of drupes 

Term
[image]
Definition

Pepo

berry with leathery rind 

Term
[image]
Definition

Pome 

surrounded by fleshy tissue that comes from hypanthium 

Term
scarious
Definition
Thin dry and membranous in texture not green
Term
plicate
Definition
Plicate or folded
Term
perigynium
Definition
with stamen petals and sepals born on calyx tube (hypanthium) surrounding but not actually attached to superior ovary
Term
lemma
Definition
the lower of the two bracts that subtend the grass floret
Term
palea
Definition
chaffy scale or bract the uppermost of two bracts which subtend a grass florett
Term
glume
Definition
one of the paired bracts at the base of the grass spikelet
Term
sheath
Definition
the portion of an organ which surrounds, another organ as the leaf base of a grass surrounds a stem
Term
column
Definition
a structure formed by the union of the staminal fillament as in many members of the malvaceae ; the united filaments and style of orchidaceae
Term
pollinia
Definition
a mass of waxy pollen grains trasported as a unit in many members of the orchidaceae
Term
cymule
Definition
a cyme or a small section of a compound cyme
Term
lodicule
Definition
paired rudimentary scale at the base of the ovary in grass flowers
Term
acicular
Definition
needle shaped
Term
glochid
Definition
barbed hair or bristle as the fine hairs in opuntia
Term
awn
Definition
a narrow bristle like appendage usually the tip
Term
equitant
Definition
overlapping or stradling in two ranks as the leaves from iris
Term
frond
Definition
a large divided leaf (fern or palm tree)
Term
tepal
Definition
a segment of a perianth which is not differentiated into calyx and corolla; a sepal or petal
Term
culm
Definition
hollow pithy stalk or stem as in a grass sedge and rush
Term
blade
Definition
Term
areole
Definition
a small well defined area on a surface as the area between the veinlets of a leaf or the region of a cactus bearing flower and or spines
Term
anthocarp
Definition
a fruit with some protion of the flower besides the pericarp persisting as in a pome with the fleshy perianth tube surrounding the pericarp
Term
resupinate
Definition
upside down due to twisting of the pedicle as flowers of some orchids
Term
lip (lebellum)
Definition
one of the two projections or segments of an irregular corrola or calyx
Term
restellum
Definition
Term
rostellum
Definition
a small beak, an extension from the upper edge of the stigma in orchids
Term
epiphytic
Definition
a plant that grows on another plant but is not a parasite
Term
gynandrium
Definition
a culmn bearing stamens and pistles
Term
ocrea
Definition
a sheath around the stem formed from the stipules, Polugonaceae
Term
auricle
Definition
hugs the stem at the base of the sheath around the culmn
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