Willows (Family Salicaceae), Family Betulaceae (Birch Trees), Family Aceraceae (Maple Trees)

Question 1

Family Salicaceae

Answer 1

Willows

Question 2

Characteristics of Family Salicaceae

Answer 2

• Dioecious trees, usually moist
• Flowers are imperfect, in catkins
• Female flowers:
  * 1 compound pistil
  * 2-4 carpels
  * 2-4 stigmas
• Fruit = capsule with hairy seeds

Question 3

Examples of Family Salicaceae

Answer 3

Aspen
Willow

Question 4

What comes from willows?

Answer 4

Acetylsalicilic acid

Question 5

Family Betulaceae

Answer 5

Birch Trees

Question 6

Characteristics of Family Betulaceae

Answer 6

• Dioecious trees
• Imperfect flowers in inflorescences
• • Male catkins
• • Female catkins or heads
• Fruits are nuts or nutlets
• Leaves alternate, simple petiolate

Question 7

What are the holes in birch tree bark?

Answer 7

lenticels - places where the tree breaths

Question 8

Examples of Family Betulaceae

Answer 8

• alder
• birch
• hazelnut

Question 9

Family Aceraceae

Answer 9

Maple Trees

Question 10

Characteristics of Family Aceraceae

Answer 10

• Trees or shrubs
• Flowers are:
  – Perfect or imperfect, axillary
  – Pistil with 2 carpels, 2 stigmas
  – Superior ovary
• Fruit =double, winged samara

Question 11

Examples of Family Aceraceae

Answer 11

• Douglas Maple
• Box Elder tree
• Big-leaf maple