FABACEAE: Bean or Pea Family Class: Magnoliopsida (dicot) Sub-Class: Rosidae Order: Fabales Family: Fabaceae Subfamily: 1. Papilionoideae 2. Caesalpinoideae 3. Mimosoideae

 400 genera  10,000 species  Found all over the world, concentrated in warm temperate regions in the Northern and Southern Hemisphere (3 rd largest family of flowering plants)

Habit: Trees, Shrubs, Herbs Self supporting, or epiphytic, or climbing Halophytic, or mesophytic, or xerophytic What’s that mean?

FLOWER

Floral Formula: CA 5 COZ 5 A 10 or 9+1 G 1 Floral Diagram: Bonus Point Flowers: Bisexual, zygomorphic, perigynous (perianth and stamens united by bases)

FABACEAE FLORAL DIAGRAM

Calyx: 5 sepals united below tube Corolla: 5 petals (1 standard, 2 wing, 2 keel) ASTRAGALUS

Standard or Banner Wing Keel

Gynoecium: one simple pistil (1 carpel, 1 locule), ovary superior, marginal placentation

ion.htm PERIGYNOUS

HYPOGENOUS

waii.edu/ EPIGYNOUS

Wisteria sinensis (9+1) Androecium: 10 stamens, monadelphous (A 10 ) or diadelphous (A 9+1 )

INFLORESCENCE

Racemes Indeterminate Growth and Pedicellate Erythrina speciosa

Indeterminate/Sessile Spikes

Anthyllis vulneraria Sessile Heads

LEAVES

Compound (pinnate or palmate) rarely simple, alternate ODD-BIPINNATE Gymnocladus dioicus te_clover.htm Trifolium repens PALMATE

Trifolium campestre Stipules may be modified into tendrils tendril/b0371tx.html Lathyrus Odoratus

PULVINUS (enlarged petiole base)

Associated with leaf movement-in response to touch or heat Mimosa – “Sensitive Plant”

Roots: nodules and nitrogen fixing bacteria Rhizobia on Root Hair

Fruit: Simple, Capsule: dehiscent legume or a loment LOMENT LEGUME

LOMENT Erythrina herbacea LEGUME Seed: May have food reserves in the cotyledons

SEEDS CONT… Varying shape and size

Composed of embryonic axis and two cotyledons The axis has embryonic root (radicle), the hypocotyl, and the first true leaves (plumule)

Germination is Epigeal or Hypogeal Epigeal- Hypogeal- Cotyledons push above soil surface Cotyledons remain beneath the soil surface

GenusCommon Name CeratoniaCarob MedicagoAlfalfa AstragalusMilk Vetch ArachisPeanut LupinusLupines PhaseolusCommon Bean GlycineSoybean CicerChickpea PisumGarden Pea LensLentil LathyrusSweet Pea ClitoriaButterfly Pea

Ceratonia- Coffee and Chocolate

Medicago – Livestock Feed

Astragalus - Aphrodisiac

Arachis – WHAT A GOOBER!

Lupinus - poisonous

Phaseolus – Wash your face with Beans?

Glycine – Watch out for the oligosaccharides!

Cicer - Protein

Pisum – Anti-sex horomonic effects

Lens – Better than a cold shower!

Lathyrus – Oh Sweet Pea!

Clitoria – May Promote Nausea and Vomiting