202 PENTANDUIA. TRIGYNIA. 



Species. 1. P. aquatica. Princ'pally confined to the 

 western side of the Alleghany mountains. 



Of this eenus there is another species on the borders 

 of the Caspian sea. 



289. CELTIS. L. (Nettle-tree, Hackberry.) 



Polygamous. — Calix 5-parted. Corolla none. 

 Styles thickish, divaricate. Drupe l-seeded< 

 Masculine flowers (inferior) calix 6 -parted, with 

 6 stamina. 



Trees or rarely shrubs; leaves mostly oblique; flowers 

 subsolitary or racemose. Filaments of the bark elastic? 



Species. 1. C. occidentalis. Calix of the male flower 

 ^.parted; stamina 5. The biirk of this species is often 

 remarkably rimose. ^ . integrifolia. Leaves entire; bark 

 of the tree not rimose — On the banks of the Mississippi, 

 near to St. Louis. 2. crassifoUa. Is not ihis a mere vari- 

 ety of C. occidentalism in which the young plants have al- 

 ways leaves that are scabrous oh either side. 3. temii- 

 folia. C. pumiloy Pursh 1. p. 200? A low bush, in the 

 mountains of Virginia, flowering ai the height ox 2 feet. 

 Leaves nearly as broad as long, now and then without 

 serratures, often cordate-ovate, verv little acuminated and 

 almost perfectly smooth on both sides. Berries solitary, 

 brown and glaucous. 



Of this small genus there is 1 species indigenous to 

 Barbary and the south of Europe, 1 to the Levant, 1 to 

 the East Indies, 1 to China, and 2 to the West Indies. 



Order III.— TRIGYNIA. 

 290. VIBURNUM. L. 



Calix small, 5-parted, superior. Corolla 

 small, campanulatc, 5-cleft. Berry or drupe 

 1-seeded. 



Shrubs with opposite leaves, naked at the base; flowers 

 terminal cymose. 



Species. 1. y . prwiifolium. 2. pyri folium. 3. Lentag9. 

 4. nufluTn. 5. obovatiim. 6. cassinoides. 7- lavigatnm. 

 8. niiidum. 9. dentatum. 10 pubescens. 11. Lantanoi- 

 des. 12. acerifoUum, 13. molle. 14. Oxjjcoccus. 15. erlule.. 



