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Plant Morphology Michael G. Simpson General Terms Can be used for more than one structure/organ
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COLOR / COLOR PATTERN SIZE NUMBER Cycly - no. of whorls (series) Merosity - no. of parts per whorl
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TEXTURE coriaceous indurate scarious succulent - thick, leathery - hard, ~unbendable - thin, dry, translucent - fleshy
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FUSION Fusion of like parts: connate coherent Fusion of unlike parts: adnate adherent Lack of fusion of like parts: distinct Lack of fusion of unlike parts: free contiguous
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SHAPE : Solid (3-D)
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acicular ensiform strap- shaped linear narrowly oblong
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narrowly elliptic elliptic widely ellipticorbicular
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lanceolate lance-ovate ovate widely ovateoblanceolate oblance-ovate obovate
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narrowly triangular widely triangular deltate rhombic trullate
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cordate / cordiform falcate panduratereniform spatulatesubulate
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attenuate narrowly cuneate cuneate obtuserounded truncatecordate reniformauriculatehastatesagittateobliquepeltate
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entire serrate serrulate doubly serrate dentate denticulate crenate crenulate spinose erose ciliate ciliolate filiferous
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acuminate caudate cuspidate narrowly acute obtuserounded truncateemarginateretuse mucronatemucronulateapiculatearistatecirrhousspinous
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Division pinnately lobed pinnately cleft pinnately partedpinnately divided sinuateincised laciniatepectinatepalmately lobed palmately cleft palmately partedpalmately divided
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Division pinnatifid bipinnatifid tripinnatifiddecompound
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Disposition (a character set) = relative placement of objects position arrangement orientation posture
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Disposition (a character set) = relative placement of objects position - relative placement of unlike objects
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proximal/ basal distal/apical adaxial (ventral) abaxial (dorsal) posterior (adaxial) anterior (abaxial) terminal (apical) lateral (axillary) cauline acrocaulis basal/ radical general positionspecialized position
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Disposition (a character set) = relative placement of objects arrangement - relative placement of like object
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alternate spiral distichous opposite decussatenon-decussate whorled equitantimbricatevalvatefasciculatesecund
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Disposition (a character set) = relative placement of objects orientation - angle relative to central axis
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Orientation appressed depressed ascending descending inclined reclined reflexed horizontal / divergent
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antrorseretrorseconniventerect pendant/ pendulous
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Posture (a character set) =placement relative to a horizontal plane transverse posture - placement of tip longitudinal posture - placement of margins twisting/bending posture
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recurvedcernuoussquarroseincurved flexuous
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conduplicaterevoluteinvolute cup-shaped (abaxially concave, in this case)
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plicateundulate/repandresupinategeniculate
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SURFACE canaliculatepunctaterugose/bullatestriate
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SURFACE aculeate/pricklyfarinaceous/scurfy papillate/ verrucate/tuberculate muricate glaucous – with a waxy coating viscid – with a sticky secretion
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SURFACE bearded ciliate/ ciliolate comose
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SURFACE pubescentpuberulenttomentosetomentulose lanate/villous pilosearachnoidscabroushirsute hispid strigosestrigulosesericeousfloccose lepidote
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glabrous - smooth, with no trichomes
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Symmetry zygomorphic (bilateral) actinomorphic (radial) biradial asymmetric
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Temporal Phenomena: Duration annual – living one growing season (gen. ≤ 1 year) biennial – living two growing seasons (2 years) perennial – living many growing seasons (∞ years)
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Temporal phenomena: Duration evergreen – persistent two or more growing seasons deciduous – persistent one growing season, then falling off caducous/fugacious – falling/dropping off early accrescent – growing beyond what is typical
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Temporal phenomena: Maturation protandrous – stamens mature first within a flower protogynous – pistils mature first within a flower
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