EXPLANATION OF THE PLATES. XVU 



B. — Nymphsea alba, Linnceus : p. 81. 



1, 2. Different forms of atameus. 



3. The pistil, with its sessile radiating stigma. 

 C. — Papaver Khoeas, Linnceus : p. 82. 



1. A stamen. 



2. The pistil, with its sessile radiating stigma. 



3. The ripe capsule, showing the apertures for the escape 



of the seeds. 

 J), — Reseda lutea, Linnceus : p. 82. 



1. One of the flowers, separate. 



2. One of the upper petals. 



3. Other forms of petals. 



4. The ovary, accompanied by a stamen. 



PLATE VIII. 



A. — Helianthemum vulgare, Gcertner : p. 83. 



1. Back view of the calyx. 



2. The pistil. 



B. — Drosera rotundifolia, Linnceus ; p. 93. 



1. One of the gland-fringed leaves. 



2. The stamens and pistil. 



C. — Polygala vulgaris, Linnceus : p. 83. 



1. A flower, seen from beneath. 



2. Side view of a flower. 



3. The pistil. 



D. — Prankenia Isevis, Linnceus : p. 84. 



1. A portion of the stem, showing the opposite leaves, and 



axillary clusters of smaller leaves. 



2. A flower. 



3. One of its petals. 



4. The pistil. 



