144 Plant Biology 



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.Sepal of calyx 

 Ovalary 



Seed 



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i 



Fig. 55. — Common garden bean or kidney bean (Phaseolus sp.). A, Plant 

 showing the twining vine, leaves, flowers, and pods (legumes) ; B, one flower very 

 much enlarged in longitudinal section (somewhat diagrammatic). The ovulary 

 is also called the ovary. 



vm 



Hypocotyl-- 



^._A1icropy/G 



3— Hilum Cotyledons ^^-}~::.\:m 



D 



B 



leaf___ 



Plumule 

 -Hypocotyl 



Cotyledons 



5talk 



Root J 



Fig. 56. — Common garden bean or kidney bean (Phaseolus sp.). A, Pod 

 (legume) with part of wall removed to show bean seeds; B, bean seed with seed 

 coat in side view; C, same as B in face view; D, face view of bean with seed coat 

 removed ; E, cotyledons spread to show structures between them ; F, seedling of 

 bean showing the true leaves and the cotyledons (embryo seed leaves), the latter 

 being pushed out of the ground during germination. 



