It is interesting to note that while the non-peculiar genera of flowering plants have little more than two species to a genus, the endemic genera average six and three-quarter species to a genus. These may be considered to represent the earliest immigrants which became firmly established in the comparatively unoccupied islands, and have gradually become modified into such complete harmony with their new conditions that they have developed into many diverging forms adapting them to different _habitats_. The following is a list of the peculiar genera with the number of species in each. {327} _Peculiar Hawaiian Genera of Flowering Plants._ Genus. No. of Species. Natural Order. 1. Isodendrion 3 Violaceae. 2. Schiedea (seeds rugose or muricate) 17 Caryophyllaceae. 3. Alsinidendron 1 ,, 4. Pelea 20 Rutaceae. 5. Platydesma 4 ,, 6. Mahoe 1 Sapindaceae. 7. Broussaisia 2 Saxifragaceae. 8. Hildebrandia 1 Begoniaceae. 9. Cheirodendron (fleshy fruit) 2 Araliaceae. 10. Pterotropia (succulent) 3 ,, 11. Triplasandra (drupe) 4 ,, 12. Kadua (small, flat, winged seeds) 16 Rubiaceae. 13. Gouldia (berry) 5 ,, 14. Bobea (drupe) 5 ,, 15. Straussia (drupe) 5 ,, 16. Remya 2 Compositae. 17. Tetramolobium 7 ,, 18. Lipochaeta 11 ,, 19. Campylotheca 12 ,, 20. Argyroxiphium 2 ,, 21. Wilkesia 2 ,, 22. Dubautia 6 ,, 23. Raillardia 12 ,, 24. Hesperomannia 2 ,, 25. Brighamia 1 Lobeliaceae. 26. Clermontia (berry) 11 ,, 27. Rollandia 6 ,, 28. Delissea 7 ,, 29. Cyanea 28 ,, 30. Labordea 9 Loganiaceae. 31. Nothocestrum 4 Solanaceae. 32. Haplostachys (nucules dry) 3 Labiatae. 33. Phyllostegia (nucules fleshy) 16 ,, 34. Stenogyne (nucules fleshy) 16 ,, 35. Nototrichium 3 Amarantaceae. 36. Charpentiera 2 ,, 37.