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INDEX OF GENERA. 
SUBGENERA AND SYNONYMS OP THIS NEW SYLVA. 
Synonyms are in Italics — References to the numbers. 
Abelicea 57 2. 
Adelia 712. 
Agastianis 704-5. 
Amorpha 507. 
Anthelis 549-51. 
Aplenda 705. 
Apleria 676. 
Aplilia 732. 
Audibertia 606. 
Basilima 674-6. 
Bigelowia 712. Borya 7 1 2. 
Broussonetia 577 to 584, 704. 
Bumelia 5 45-8. 
Caprifolium 5 1 6 to 525. 
Carpoxis 714, 725. 
Carpodetus 607. 
Castanea 695-98. 
Ceanothus 607 to 621. 
Celastrus 506. 
Celtis 552 to 566. 
Cephalantbus 538. 
Qephalot hymns 604. 
Ceratiola 596. 
Chamedryon 653. 
Chionanthus 706 to 711. 
Chrysobalanus 539 to 542. 
Chrysophylum 543-4. 
Cistus 549-51. 
Cladrastis 699, 700. 
Colema 594. 
Cralegus 501- 
Canila 600. 
Cypheola 525. 
Diervilla 529-30. 
Biodeilis §00. 
Diospyros 537. 
Distegia 525-6. 
Empetridia page 48. 
Empetrum 594 to 599. 
Endammia 595. 
Epicostorus 671- 
Euleucum 594. 
Eunemium 525. 
Evonymus 622 to 632. 
Fagus 688 to 694. 
Forestiera 712 to 725. 
Fraxinus 728 to 734. 
Fusticus 579 to 583. 
*Gardoquia 600. 
Gonondra 705. 
Hamamelis 509 to 515. 
Horanthes 549-51. 
Hydrangea 677 to 687* 
Hypoma 607. 
Kantemon 523-5. 
Leptalix 730. 
Linociera 706. 
Lonicera 516 to 530. 
Madura 577. | 
Mayepea 706. 
Megasteira 676 
Melissa 600. 
Morus 577 to 593. 
Nestronia 503-5. 
Nudilus 715, 727. 
Ornanthes (Ornus) 781 
Pentinius 623, 632. 
Physcondra 624. 
Physocarpa 667-70. 
Piloblephis 60_4-5. 
Planora 572. 
Platomesus 622. 
Pleurostena 57 3-4. 
Polygonum 573-6. 
Poma^eris 60*7. 
Pyrus 508. 
Rafinesquia 600*3, 
Rhamnus 505, 572. 
Samarpses 733-4. 
Sapindus 531. 
Satureia 604. 
Schizonotus 672-3. 
Sophora 701-4. 
Sorb aria 674. 
Sorbus 508. 
Spermalauxen 575-6. 
Spiradia page 61. 
Spirea 633 to 676. 
Spondolobus 542* 
Symphoria 528. 
Toxylon 577-8. 
Trilopus 509-15. 
Ulmus 567 to 572. 
Virgilia 699 to 705. 
Viscurn 532-6. 
Xeromalon 501-2. 
Xylosteon 527. 
Zanthyrsis 701-2. 
