EXPLANATION OF THE PLATES. 



PLATE I. 



A LILIACEOUS FLOWER. 



Fig. 1. — A flower of the common White Lily (Lilium candidum). 

 The 3 inner petals present a longitudinal nectariferous groove. 



Fig. 2. — a. The 6 stamens and pistillum. b. The receptacle or 



common base of insertion. 

 Fig. 3.— The pistillum. a. The germ. b. The style, c. The 



stigma, which is 3-Iobed. 

 Fig. 4. — The stamen, a. The subulate or awl-shaped filament. 



b. The oblong anther. 



Fig. 5. — The mature capsule, a. The cancellate threads, which 

 guard the opening of the valves. 



Fig. 6. — A transverse section of the capsule, exhibiting its inter- 

 nal division into 3 cells, with 3 valves, a. The cells or cham- 

 bers, b. b. The triangular flat seeds, disposed in a double row 

 in each cell. 



PLATE II. 

 THE ORDER OP CRUCIFEROUS FLOWERS. 



Fig. 1 . — A branch of the Sea-side Stock ( Cheiranthus mariti- 

 mus). The leaves oblong and sessile. 



Fig. 2 — The disposition of the stamens in 2 sets. a. The 4 long- 

 er, and b. the 2 shorter, rendered so by the interposition of 

 the 2 glands c. betwixt their base and that of the germ. 



Fig. 3. — A petal consisting of a. The border, and 6. The stalk, 

 narrowed part, or claw (unguis). 



Fig. 4. — The pod or silicle ; the kind of fruit common to the first 

 order of Cruciferous flowers, a. The valves. 6. The parti- 

 tion or dissepiment dividing this kind of fruit into 2 cells, with 

 the seeds attached alternately to its filiform margins. 

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