EXPLANATION OF THE PLATES. 
ms 
Fig. 7. Hypericum iEgyptiacum. Hypericinece . Calyx 
5~parted, corolla 5-petaled. 
a. Bractese two. 
Fig. 8. Robinia hispida. Leguminosce. Flower with a 
papilionaceous or butterflylike corolla. 
a. Calyx four-cut, irregular. 
b. The standard of the corolla. 
c. The wings. 
d. The keel. 
Fig. 9. The same, having the calyx and corolla pulled 
off, to show the diadelphous stamens, and magnified. 
a . The tubular androphore, split longitudinally into nine 
filaments at top. 
b. The single free stamen. 
c. Stigma velvetty. 
Fig. 10. Rubus odoratus. Dryadece. Longitudinal 
section of the flower to show the insertions. 
a. Gynophore convex. 
b. Stamens indefinite, perigynous. 
Fig. 11. Poly gala Heisteria. Polygalece. Calyx five- 
parted, lobes equal ; corolla monopetalous, irregular, two- 
lipped, split above, and rolled up into a tube at bottom. 
Fig. 12. The tubular androphore, split longitudinally, 
embracing the pistill, and divided at top into seven short 
filaments, bearing the anthers. 
Fig. 13. Malva fragrans. Malvaceae. Flower polyan- 
drous, monadelphous. 
Fig. 14. Linaria. Personates. Calyx five-parted ; corolla 
gaping, spurred at the base, limb 2-lipped; above 2-cut, 
turned back, below 3-lobed ; palate rather prominent in the 
throat. 
Fig. 15. Hypericum quadrangulare. Hypericinece. Calyx 
5-cut, lobes uncut; petals 5; stamens indefinite, on three 
androphores ; styles three. 
Fig. 16. Epipactis palustris. Orchidece. Ovary pedi- 
celled, not twisted, pubescent; perigonium spread; lip 
crenate, blunt, spurless, as long as the sepales, not clasping; 
hypochilium concavely bunched ; epichilium inwardly 
2-bunched at the bottom. 
Fig. 17. Selinum caruifolium. Umbelliferce . Flower 
magnified. Petals five, bent in at the tip, and appearing 
as if notched ; stamens five, alternate ; styles two. 
Fig. 18. Corylus sylvestris. Corylidece. Male flowers 
collected into a catkin. 
