ARACEAE.

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Presentation transcript:

ARACEAE

Current Angiosperm Phylogeny Group Tree for Flowering Plants monocots Current Angiosperm Phylogeny Group Tree for Flowering Plants

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

CHARACTERS DIAGNOSTIC OF MONOCOTS: branching sympodial

CHARACTERS DIAGNOSTIC OF MONOCOTS: vascular bundles in stem scattered, closed [no interfascicular cambium developing]

ARACEAE Key Characters net venation, no dead-end veins spathe (inflorescence bract) spadix (thick spike) monocot numbers in flowers

Colocasia esculenta -- TARO Colocasia affinis

Zantedischia "cally lily"

Amorphophallus titanica

dicot dicot-like secondary and tertiary veins in Anthurium, Araceae textbook monocot veins Croat lexicon for Anthuirum: http://www.aroid.org/TAP/Articles/standanthdesc.php dicot

Acorus (sweetflag) – currently the most primitive monocot

taro (Colocasia esculenta) calcium oxalate raphides 500x: photo by Tina Weatherby Carvalho

monosulcate pollen - Monstera

General Angiosperm Relations --- Soltis et al. 2008 No monosulcate pollen in descendants of this ancestor. Mostly monosulcate pollen in early flowers and gymnosperms.

Monstera - hemiepiphyte with holes in leaves

Philodendron - juvenile stem ascending trunk of a balsa tree

Monstera inflorescences as fruit in the market

Montrichardia - monopodial, coastal swamp forests, looks like a treelet. infl picture: http://lh6.ggpht.com/_l--br1jG3MI/RsdzBiU0kCI/AAAAAAAACIU/qYzMIJONnqM/2007.8.1.Badajos+Rio.042.JPG Known in some countries as Moco-Moco, the leaves are said to be the favourite food of manatees. The non-green parts, especially fruits in the fruiting head (spadix) are edible - the seeds can be roasted. Commonly eaten where they occur along the Orinoco delta Brucher (1989) . In Surinam a milky juice in the stem is used to treat deep cuts (external) and against nose bleeds.

Pistia and Lemna – floating aquatics in the Araceae, but separate origins

Current Angiosperm Phylogeny Group Tree for Flowering Plants monocots Current Angiosperm Phylogeny Group Tree for Flowering Plants