Receptacle = Place on stem where floral organs originate & attach

Sepals = Lowest order of floral organs, first to develop, can be green & leaf-like.

Collectively = Calyx

Petals = Inserted on the Receptacle just above the Sepals, usually brightly colored, 

Collectively = Corolla

Tepals = Sepals & Petals alike in color & shape

Perianth = Collective term for Sepals + Petals

Stamens = Inserted above Petals, consists of Anther & Filament,

Anther - Part of Stamen that Produces Pollen

Filament - Stalk that bears the Anther

Collectively = Androecium

Carpel = Inserted above Stamens & are the uppermost floral organs. Each consists of Stigma, Style & Ovary.

Stigma - Tip of the carpel, Receptive to Pollen

Ovary - Base of the carpel, contains Ovules

Style - Connects the Stigma to the Ovary

Collectively = Gynoecium

Apocarpous   - Flower with Free (Separate) Carpels

Coalescence or Fusion - Fusion or union of floral organs from the same whorl or type. Designated by Sym or Syn

Syncarpous = Fused Carpels

Synandrous = Fused Stamens

Sympetalous = Fused Petals        

Synsepalous = Fused Sepals

Adnation = Fusion between floral parts of a different kind or whorl.

Fusion of Calyx & Corolla

Fusion of Androecium & Corolla

Datura Flower with Adnation between the Corolla and Androecium

Hypanthium = Fusion of Calyx, Corolla & Filaments of Androecium

 Perigynous Flower = when the Hypanthium is free from the Gynoecium

Perigynous Flower in Rosaceae

Fusion of Hypanthium to Ovary -> Epigynous Flower with Inferior Ovary.

Epigynous = Above the Gynoecium. The other floral organs appear to grow from the top of the Ovary with Epigynous flowers because the Hypanthium is fused (adnate) to the Ovary Wall (Pericarp).

Apple (Pyrus) Flower with Petals removed: This is an Epigynous Flower with an Inferior Ovary.

Oh NOOOOOOOOOO More Terms!!!!!!!!

Complete   - Has all four floral Organs

Incomplete   - One or more floral organs missing

Perfect - Flower with Androecium & Gynoecium

Imperfect   - Missing Androecium or Gynoecium

Carpellate Flower - Imperfect that has Carpels only

Staminate Flower - Imperfect that has Stamens only

Monoecious (One House) - One plant has BOTH Carpellate & Staminate Flowers.

Dioecious (Two Houses)- One plant has only Staminate flowers & another plant has only Carpellate Flowers

Hypogenous   - "Superior Ovary" - Other floral organs attached Below the Gynoecium on the receptacle.

Perigynous   - Sepals, Petals & Stamens arise from a tubular extension of the receptacle called the Hypanthium which surrounds the Ovary but is NOT fused to the Ovary Wall. The ovary is "Superior".

Epigynous   - "Inferior Ovary" - Stamens, Petals & Sepals appear to grow from the top of the Ovary or from an extension of the Hypanthium that appears to grow out of the top of the Gynoecium.

Actinomorphic   - Face of Flower has Radial Symmetry

Zygomorphic - Face of Flower has Bilateral Symmetry

Composite - Many individual flowers inserted on a flattened, broad Receptacle so that they appear to be one large flower - Sunflower = Prime Example

A Composite which looks like  one Flower	Composite flower split down the middle - Note the many small Flowers attached to the broad Receptacle
Erigeron - Note the Many Individual Flowers attached to the Receptacle	Erigeron Flowers

Erigeron - One of my favorite Flowers - I think you can see why!!!!!! So simple but oh so beautiful!!!!

Composites frequently contain two types of Flowers.

The central flowers are called Disk Flowers. These are Actinomorphic.

The peripheral flowers may have Zygomorphic Corollas (bilateral symmetry) and resemble rays of the sun. Thus they are called Ray Flowers.