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Seed Plant: II Angiosperms (Monocots (Dioscoreales (They may be…
Seed Plant: II Angiosperms
Changing concepts about early Angiosperms
most botanists concluded that
angiosperms are monophyletic
C.E. Bessy developed hypothesis of
ranalean flower
it states that
Magnolia
type flower had all parts
sepals, petals, stamens & carpals
they were arranged spirally
Jurassic & Lower Cretaceous Periods
they represent both monocot & dicot leaves
Basal Angiosperms
3 groups of exants descendants clade
Amborellaceae
5 - 11 petals
dioecious
Nymphaeceae
water Lilies
lack wood & flowers pollinated by animals
Austrobaileyales
woody trees
they have bisexuals flowers
contains living descendants of several groups
Monocots
Commeliniod Monocots
Poales
they include most food
wheat, barely, oats, rye, corn, rice
8000 species
Arecales
the palms exhibit more diversity than most monocotyledons.
include some of the largest angiospermThe palms exhibit more diversity than most monocotyledons.
Zingiberales
contains
Maranta
,
Calathea
, cana lilies, ginger
flowers are bilaterally symmetry
Alismatales
found in swamp & marshes
partly or entirely submerged
Liliales
11 Family & 1300 species
many ornamentals flowers & most are bulbs
Asparagales
typically perennial herbs
with fleshy to fibrous stems
Dioscoreales
They may be achlorophyllous or saprophytic.
are vines or herbaceous forest floor plants
Synapomorphies include tuberous roots, glandular hairs, seed coat characteristics
Eudicots
Rosid Clade
very long & diverse clades
fabids (eurosids I)
malvids (eurosids II)
Asterid Clade
3 features
they have sympetalous flower
always have few stamens; not more than number of petals
stamens alters with petals
contains plants like sunflower, periwinkle, petunia, & morning glory
Basal Eudicots
Santalales
includes
Viscum
&
Phoradendron
Caryophalles
contains group of cacti, ice plant, four o' clock
