12 



DIALYPETALOUS EXOGEXS 



somewhat crowded near the summit of the stem, all floating on the surface of the 

 water; petioles 6 to 12 or 15 inches long. Flowers axillary, solitary, brownish 

 purple; peduncles 2 or 3 to 5 or 6 inches long. 

 Hob. Lakes and pools ; Schuylkill : rare. Fl. June, July. Fr. Aug. 



ORDER VII. NYMPHAEACEAE. 



Aquatic herbs, with a large rhizoma; leaves roundish, cordate or cordate-cleft at 

 base, floating or erect; flowers solitary, the sepals, the numerous petals and sta- 

 mens, imbricated in several series; pistils numerous, combined into a many-celled 

 compound ovary; seeds suspended, sometimes arillate, albuminous; embryo small. 

 To this Order belong the beautiful and fragrant Water Lilies; also the magnifi- 

 cent Victoria regia, of tropical America, which was first successfully cultivated in 

 the U. States in 1851, by the enterprising and public-spirited President of the 

 Pennsylvania Horticultural Society, CALEB COPE, Esq. 



19. WIPPHAR, Smith. 



[Formed from JVeufar, the Arabic name for the Pond-Lily.] 

 Sepals 5 or 6, orbicular. Petals numerous, narrow and stamen-like, 

 and with the numerous stamens inserted on a disk at the base of the 

 ovary. Stigma compound, sessile, radiated. Fruit an ovoid sub- 

 carnose capsule. Seeds not arillate. 



1. HT. ^dvena, AiL Leaves cordate, with diverging lobes ; peti- 

 oles semi-cylindric ; sepals 6, unequal; fruit sulcate. 

 STRANGE NUPHAR. Spatter-dock. Yellow Pond-Lily. 



Stemless perennials; rhizoma creeping, thick and often several feet long. 

 Leaves 8 to 10 or 12 inches long, erect in shallow water, floating in deep water, 

 coriaceous ; petioles thick, varying in length. Flowers dull yellow, on peduncles 6 

 to 12 or 18 inches long. 

 Sab. Pools, and still waters: frequent. Fl May, Sept. Fr. Aug. Oct 



ORDER VIII. PAPAVERACEAE. 



Herbs, with a milky or colored juice : floivers regular, polyandrous, hypogynous ; 

 sepals caducous ; fruit mostly a 1-celled pod or capsule, with 2 or more parietal 

 placentae, which sometimes form imperfect partitions; seeds numerous, often 

 crested ; embryo small, at the base of fleshy and oily albumen. 



This Order is chiefly remarkable, as affording that solacing drug, called Opium, 

 or what an eminent Physician termed the " magnum Dei donum." 



t Herbs with a white juice: Seeds not crested. 



20. PAPA^VER, L. 



[Derivation of the name not well ascertained.] 



Sepals mostly 2. Petals 4. Stigmas 4 to 20, sessile, united in a 

 flat radiated crown on the summit of the ovary. Capsule obovoid, 

 with imperfect partitions, opening by chinks or pores under the 

 edge of the stigmatic crown. 



1. P. dubium, L. Leaves pinnatifid, hairy; peduncles clothed with 

 appressed bristles ; capsules clavate, smooth. 

 DUBIOUS PAPAVER. Poppy. Field-Poppy. 



Annual. Stem 1 to 2 feet high, somewhat branching. Leaves 2 to 5 inches long. 

 Flowers dull red, on flexuous peduncles 6 to 12 inches in length, nodding before 

 they expand. 

 Hob. Cultivated grounds. Nat. of Europe. Fl. May. Fr. July. 



Obs. This foreigner has made its appearance, within a few years, 



