202 PENTANDRIA. TRIGTNIA. 



Species. 1. P. aqnatica. Principally confined to the 

 western side of the Alieg-hany mountains. 



Of this tjenus there is another species on the borders 

 of the Caspian sea. 



289. CELTIS. X. (Nettle4ree, Hackberry.) 



Polygamous. — Calix 5-parted. Corolla none. 

 Styles thickish, divaricate. Drupe 1 -seeded. 

 Masculine flowers (inferior) calix 6 parted, with 

 6 stamina. 



Trees or rarely sl\rubs; leaves mostly oblique; flowers 

 subsolitary or racemose. Filaments of the bark elastic? 



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

 5-parted; stamina 5. The bark of this species is often 

 remarkably rimose. /3. inte^rifoUa. Leaves entire; bark 

 of the tree not rimose — 0nl:jie banks of the Mississippi, 

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

 ety of C. occidentaUs, in winch the young- plants have al- 

 \vays leaves that are scabrous on either side. 3. temd- 

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

 mountains of Virginia, flowering at the height of 2 feet. 

 Leaves nearly as broad as long, now and then without 

 serratures, often cordate-ovate, very little acuminated and 

 almost perfectly smooth on both sides. Berries soLtary, 

 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 Indiea. 



Order III.— TRIGYNIA. 

 £90. VIBURNUM. L. 



Calix small, 5-parted, superior. Corolla 

 small, campanulate, 5 -cleft. Berrtj or drupe 

 1 -seeded. 



Shrubs with opposite leaves, naked at the base; flowers 

 terminal cymose. 



Species. 1. \. prunifoliiini. 2. pyrifoUum. 3. Lentago 

 4. nudum. 5. obovatum. 6. cassinoides. 7. lavigutiim. 

 8. nitidntn. 9. dentatum. 10. pubescens. II. Lantanoi- 

 des. 12. acerifoliwru 13. moUs. 14. Oxycoccus. 15. edule. 



