ANGIOSPERMS: FLOWERING PLANTS



4/1/94, 3/31/95, 4/4/97, 31 Mar 00, 3 April 2000, 30 Mar 01



Campbell: 567-, 673, 687, 730-740



Seeds in vessel, appeared 120 mil yr ago



PARTS (all originated as leaves which became specialized): (see p 731, 732)



SEPALS covering

CALYX cup, covering, husk



PETALS flower leaf

COROLLA little crown



STAMEN originated as leaf parts too standing upright

ANTHER flower

FILAMENT hair



CARPEL is a folded leaf fruit

STIGMA spot, mark, point

STYLE pillar, stalk

OVARY egg, place for

OVULE egg, little





3 April 2000



Pollination:

wind no color, no odor, much pollen ragweed
bee yellow, never red, nectary guide (often UV) mints, dandelion
butterfly sweet smell, tubular corolla, thistle,
flies smell of rotting flesh carrion weed
beetles inferior ovaries, not damaged by chewing Rose
moths white flowers, open at dusk, very fragrant white campion, 4 o'clocks
bats copious amount of nectar, night blooming, smell fruit-like or fermenting Phlox (?)
Hummingbirds red, tubular corolla, high sugar, little odor Trumpet Vine




(Ward's Bulletin, Summer 1986)

EVOLUTIONARY TRENDS OF FLOWERS



rvsd 31 March 2000, 4 April 03





TRAIT PRIMITIVE ADVANCED

1. number of flower parts many, indefinite parts few parts, fixed numbers

2. relation of parts separate fused

3. symmetry of parts radial bilateral

4. location of ovary superior inferior



Family traits examples Peterson's

page

Lily parts in 3s: 3/6 ptls, 6 stmn,3lob stigma lily, onion xvi
Cruciferae 4 petals in a cross, 6 stm (2 shorter) cabbage, mustard xix
Rose 5 rounded ptls, 5 spls, indef# stamen berries, apple, cherry xx
Legume 5ptls, 2 lwr: keel,2 wings,1 upr banner beans, peas xx
Violet 5s, lwr wide,veined pansy, violet xxii
Umbelliferae umbrella-shaped clusters, 5 petals carrot, QnAnn lace

poison hemlock

xxiii
Labiatae corolla, 2 flaring lips, upper has 2 lobes, lower three lobes mints xxv
Solanaceae 5s, stamen and pistil united to form beak. berry w/ many seeds Tomato, egg plant, potato xxv
Compositae cluster of many florets, rays around central disk lgest family, daisy

zinnia, dandelion

xxviii





In comparison of Monocots and dicots in Campbell's 6th:



Summary table 721

Seed Structure 792

Seed Germination 794

Stem structure 733



page 721 in Campbell's 6th MONOCOTS DICOTS:
example: corn bean
seed leaves (792, 793 & 794) one two
vascular tissue distribution (733) complex distribution arranged in ring
leaf structure (721) veins usually parallel veins reticular
root structure fibrous or diffuse tap root
flower parts multiples of three parts in 4s or 5s