ARACEAE. Current Angiosperm Phylogeny Group Tree for Flowering Plants monocots.
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Transcript of ARACEAE. Current Angiosperm Phylogeny Group Tree for Flowering Plants monocots.
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ARACEAE
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Current Angiosperm Phylogeny Group Tree
for Flowering Plants
monocots
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CHARACTERS DIAGNOSTIC OF MONOCOTS: •herbaceous •branching sympodial•vascular bundles in stem scattered, closed [no interfascicular cambium developing] •tertiary veins without free endings •leaf base sheathing•pollen monosulcate•gynoecium three-parted•cotyledon 1•primary root present but unbranched, not persisting
• expanded here
covered in Araceae
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CHARACTERS DIAGNOSTIC OF MONOCOTS: •branching sympodial
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CHARACTERS DIAGNOSTIC OF MONOCOTS: •vascular bundles in stem scattered, closed [no interfascicular cambium developing]
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ARACEAE Key Characters net venation, no dead-end
veinsspathe (inflorescence bract)spadix (thick spike)monocot numbers in
flowers
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Colocasia esculenta -- TARO
Colocasia affinis
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Zantedischia "cally lily"
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Amorphophallus titanica
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dicot-like secondary and tertiary veins in Anthurium, Araceae
textbook monocot veins
dicot
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Acorus (sweetflag) – currently the most primitive monocot
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taro (Colocasia esculenta) calcium oxalate raphides 500x:
photo by Tina Weatherby Carvalho
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monosulcate pollen - Monstera
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Gen
eral
Ang
iosp
erm
Rel
atio
ns -
-- S
olti
s et
al.
2008
No monosulcate pollen in descendants of this ancestor.
Mostly monosulcate pollen in early flowers and gymnosperms.
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Monstera - hemiepiphyte with holes in leaves
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Philodendron - juvenile stem ascending trunk of a balsa tree
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Monstera inflorescences as fruit in the market
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Montrichardia - monopodial, coastal swamp forests, looks like a treelet.
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Pistia and Lemna – floating aquatics in the Araceae, but separate origins
Lemna
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Current Angiosperm Phylogeny Group Tree
for Flowering Plants
monocots