BOT 360F - Families of Vascular Plants

Quiz 10 30-Nov-10

(1) Please identify the flowering plant families represented by the eight on-screen images, or answer the question shown. [4 marks]

     

(a) Ericaceae (Kalmia)

Kalmia polifolia (b) apocarpous gynoecium (Caltha)  
(c) Ericaceae (Chimaphila) Chimaphila (a) Brassicaceae (Erysimum) Barbarea?
(e) Liliaceae (Lilium) Lilium (f) Asteraceae (Taraxacum); the fruits developed from epigynous flowers Taraxacum
(g) Fabaceae (Amphicarpa); Faboideae Amphicarpa (h) homogamous head (Cichorium) Cichorium

(2) Which family is more variable in fruit morphology, based on the material you’ve seen in lab and lectures, the Ericaceae or the Fabaceae? Support your answer with examples. [3 marks]

  • Ericaceae produce capsules, berries, and drupes (Arctostaphylos), the first with considerable variation (enclosed by a fleshy calyx in Gaultheria; septicidal. loculicidal).
  • In contrast, variation in Fabaceae seems more limited, most species producing a legume (pod; or a lomentum). Stevens (APW, 2001 onward), however, writes, "...overall there is a great diversity of fruit morphology in the family, including variously winged fruits, fleshy fruits, ..." etc. so that I will accept any well-supported answer.

 

Images © Royal Ontario Museum 2004.

 


| What are plant families? | How do we distinguish them? | How and why do we study them? | Selected vascular plant families of Ontario | Reading List | Course outline |

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