5. The Flora of Southern Illinois
PLB 451 – Plant Biology Dept.
Southern Illinois University
6. Binomial Nomenclature
“The beginning of wisdom is to call
things by their rightful names.”
Kingdom
Phylum
Class
Order
Family
Genus
Species
Animalia
Cordata
Reptilia
Testudines
Emydidae
Emydoidea
E. blandingii
21. • 1. Gymnosperms (“Naked Seeds”):
plants that don’t produce a protective fruit
around the seed.
• Ex: all the conifers-pines, cedar, spruce,
and cypress.
22. • 2. Angiosperms (“Hidden
Seeds”): flowering plants, seed is
encased in a protective fruit.
• This is the dominant group of plants
on Earth today.
• * Fruit- anything formed from the
enlarged plant ovary.
31. Seed
MonocotsEudicots
One cotyledon in seed
FlowerRoot
Root xylem and
phloem in a ring
Vascular bundles
scattered in stem
Leaf veins form
aparallel pattern
Flower parts in threes
and multiples of three
Flower parts in fours or
fives and their multiples
Leaf veins form
anet pattern
Vascular bundles
in a distinct ring
Root phloem between
arms of xylemTwo cotyledons in seed
Stem Leaf
Monocot vs. Dicot
33. Two Types of Flowers:
• 1. Perfect (Complete): flowers
containing BOTH male (stamen) and
female (pistil)
sexual parts.
• Automatically
monoecious
34. • The male part is termed the Stamen
which consists of the anther and filament.
• The female part is the Pistil, which
consists of the stigma, style and ovary.
35. • 2. Imperfect (Imcomplete): Flowers
containing the reproductive parts of only
one sex.
• These imperfect flowers may be on the
same plant (monoecious),
• or on separate plants (dioecious).
39. Symbiosis Can Be One Of Two
Conditions:
• 1. Obligatory: one organism cannot live
without the other.
• 2. Facultative: can live symbiotically but
can survive without one another.
41. Simple leaf, magnolia
a. Simple versus compound leaves
Pinnately compound leaf,
black walnut
Palmately compound leaf,
buckeye
b. Arrangement of leaves on stem
Opposite leaves, maple
Whorled leaves,
bedstraw
Alternate leaves,
American beech
Leaf Characteristics
70. Gee whiz?! information
If you can’t tell a joke about it,
explain where the name comes
from, or tell story about the plant
then:
WHO CARES!!!
71. Latin Pronunciation
Pronounce every letter except diphthongs
Echinacea, Tradescantia, Opuntia humifusa, Ambrosia artemisiifolia
“ch” is a “k” sound
Polystichum, Heuchera
If a word has two syllables, the accent always goes with the next to the last (called the penult);
e.g., Àcer.
If a word has three or more syllables, the accent always goes either with the next to the last
(penult) or the third from the last (called the antepenult).
Synandra hispidula, Onoclea sensibilis, Liriodendron tulipifera
phyllum – rhizophyllum, Podophyllum, triphyllum
ae Pellaea atropurpurea, Arisaema
au Daucus carota
Eu Teucrium, Leucanthemum
Oe (phoebe), Platanthera peramoena, Ipomoea
Ui Equisetum
“oi” is not a diphthong!
Pleopeltis polypodioides
Pronounce when ending with “e”
Silene, canadense, sessile, hyemale
Latinized last names (one or two i’s)
Dodecatheon frenchii, Emydoidea blandingii
Most trees have been feminized!
Quercus rubra, Fagus grandifolia, Ulmus americana