Orchidaceae

Question 1

Apostasioideae

Answer 1

• 2-3 anthers
• Anther filaments fused to column near base
• Absent staminode
• Petaloid lip, never saccate

Question 2

Cypripedioideae

Answer 2

• 2-3 anthers
• Anther filaments fused to column stalk
• present staminode
• terminal, shield-shaped
• lip is deeply saccate

Question 3

Orchid Family

Answer 3

• Second largest flowering plant family
• 1,000 genera
• 15,000-20,000 species
• 44,000 native Louisiana species

Question 4

Inflorescence

Answer 4

• Usually bisexual, rarely unisexual

Question 5

Inner Whorls

Answer 5

• Androecium

* Gynoecium

Question 6

Special Features

Answer 6

• Column (gynandrium) - complex consisting of stigma, style, and androecium
  
  • anthers above, styles below
  • separated by rostellum modifications of column
• Lots of pollinator diversity

Question 7

Leaves

Answer 7

• Simple, alternate arrangement
• Margins are entire
• succulent
• Sheathing at base
• Often in 2 ranks (2 vertical columns)

Question 8

Economic Importance

Answer 8

• Vanilla
• floriculture industry
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