152 EXPLANATION OF PLATES, 



PLATE 16, 



COMPOUND FLOWERS. p. 70. 



Fig. 1. A compound radiate Flower. Field Dasiy. 



a. The ray or external circle of florets, 



b. The disk or centre. 



c. A lig-ulate floret of the ray separated. 



d. A tubular floret of the disk separated- 



2. A ligulate Flower. Dandelion* 



a. One of the florets separated. 



3. A Discoid flower. Burdock. 



a. A floret separated. 



SEEDS. 



4. A Seed and its appendages. 



a. The seed. 



b. The stipe. 



c. The pappus or down. p. 60. 



5. The wing of a seed. p. 61 



6. A seed having one cotyledon, p. 60. 



7. A seed having two cotyledons, p. 60. 



a. a. The cotyledons. 



b. c The corcule. 

 b. The radicle, and 

 e. The plume. 



8. A seed having many cotyledons, p. 60. 



9. Seminal leaves p. 60. 

 10. Anatomy of wood. p. 104. 



