Lab Quiz Week 5

Large, showy flowers with MANY tepals and spiral arrangement → family?

Magnoliaceae

Flower parts not in fixed numbers, many stamens/carpels, woody tree → ?

Magnoliaceae

Crush leaves → strong aroma + small greenish flowers with 9 stamens → ?

Lauraceae

3+3 tepals + 3 whorls of stamens → ?

Lauraceae

Herbaceous, bright and showy, lots of stamens/carpels (free), no obvious pattern → ?

Ranunculaceae

Bright flowers, often deeply lobed leaves, superior ovary → ?

Ranunculaceae

6-part flower + valvate anthers + 1 carpel + petaloid sepals → ?

Berberidaceae

Hanging catkins, monoecious tree, simple and serrated leaves → ?

Betulaceae

Wind-pollinated, inferior ovary, small nut fruits → ?

Betulaceae

Opposite leaves + winged samaras → ?

Sapindaceae

Nectar disk present + 2 fused carpels + no perianth if wind pollinated → ?

Sapindaceae

4 petals in CROSS shape + 6 stamens (4 long, 2 short) → ?

Brassicaceae

Basal rosette + silicle/silique fruit → ?

Brassicaceae

Dioecious trees with catkins + NO petals/sepals → ?

Salicaceae

Cottony seeds + hairy bracts → ?

Salicaceae

Small 5-part flowers + basal rosette + hypanthium → ?

Saxifragaceae

2 carpels fused but free at tips → ?

Saxifragaceae

Bilateral symmetry + nectar spur → ?

Violaceae

5 petals, lower petal spurred, 3 fused carpels → ?

Violaceae

Acorns + cupule (“cap”) → ?

Fagaceae

Monoecious tree with catkins + inferior ovary → ?

Fagaceae

Dioecious + no perianth → ?

Salicaceae

Acorns present → ?

Fagaceae

Many stamens + spiral flower → ?

Many stamens + messy herbaceous flower → ?

Magnoliaceae

Ranunculaceae

Which families have catkins?

Betulaceae / Salicaceae / Fagaceae

Which family has opposite leaves?

Sapindaceae

Small 5-merous + rosette?

Saxifragaceae

Which of the 3 catkin families is dioecious (separate male and female plants)?

Salicaceae

Which of the 3 catkin families is monoecious (both sexes on same plant)?

Betulaceae or Fagaceae

Catkin families:

• No perianth at all → ?

• Reduced perianth present → ?

Salicaceae

Betulaceae or Fagaceae

Catkin families:

• Cottony seeds (fluffy) → ?

• Small nuts / winged fruits → ?

• Acorn with cupule (“cap”) → ?

• Salicaceae

• Betulace

• Fagaceae

Of the catkin families, if there is both male and female in catkins, it is:

Betulaceae

Of the catkin families, if there male catkins, but the female flowers are NOT in the catkins (or clustered), it is:

Fagaceae

Of the catkin families, if hairy bracts are present, it is:

Salicaceae

Between betulaceae and fagaceae:

• Female catkins present → ?

• Female flowers NOT catkins → ?

Betulaceae

Fagaceae

Differences in leaf structure between betulaceae and fagaceae

• Betulaceae:

  • Often doubly serrate

• Fagaceae:

  • Usually simple serrate or lobed (not doubly serrate)

Differences in stamens between betulaceae and fagaceae

• Fagaceae:

  • Stamens 4–40 (often MANY)

• Betulaceae:

  • Stamens usually ~4

Key distinctions between Magnoliaceae and Ranunculaceae

• Magnoliaceae:

  • Woody

  • Huge, showy flowers

  • Spiral arrangement + tepals

• Ranunculaceae:

  • Usually herbaceous

  • Often smaller flowers

  • Petals sometimes absent

Key distinctions between Lauraceae and Berberidaceae

• Lauraceae:

  • Aromatic leaves

  • 9 stamens (in 3 whorls)

  • Woody trees

• Berberidaceae:

  • 6 stamens

  • Trigger stamens

  • Often shrubs/herbs

Alternate, simple, entire margins, large leathery leaves on woody tree → ?

Magnoliaceae

Alternate, simple, entire leaves that smell strongly when crushed → ?

Lauraceae

Leaves deeply lobed or finely dissected, often basal or alternate → ?

Ranunculaceae

Woody plant with opposite leaves that are palmately lobed.

Sapindaceae

Woody plant with simple leaves that are strongly aromatic when crushed. No flowers visible.

Lauraceae

Tree with alternate leaves that are doubly serrated. Catkins may or may not be present.

Betulaceae

Plant with deeply dissected leaves and no obvious floral structure. Herbaceous.

Ranunculaceae