1. 33) Fabaceae (Leguminosae)
29) Oxalidaceae
30) Euphorbiaceae
31) Violaceae
32) Salicaceae
34) Rosaceae
35) Ulmaceae
36) Cucurbitaceae
37) Fagaceae
38) Betulaceae
Eurosids I

2. 37) Fagaceae Beech or Oak Family Trees and shrubs
Leaves leathery, often with small or large sinuses
Staminate flowers in catkins, pistillate flowers in very small clusters of (1) 2-7 associated with a scaly or spiny cupule in leaf axils
Flowers highly reduced
Fruit a nut, often capped or enclosed in the cupule

3. Examples Fagaceae Fagus grandifolia (american beech)
Castanea dentata (chestnut)
Quercus (oak)
Quercus alba (white oak)
Quercus nigra (black oak)
Quercus rubrua (northern red oak)

4. Castanea dentata

5. Castanea dentata

6. Castanea dentata

7. Castanea pumila

8. Fagus grandifolia

9. Quercus lusitanica

10. Quercus spp.

11. Quercus alba
Staminate catkins

12. Quercus alba
Pistillate flower cluster surrounded by numerous small bracts forming a cupule

13. The cupule of bracts forms the acorn cap
Quercus gambelli
The cupule of bracts forms the acorn cap

14. 38) Betulaceae Birch Family Trees, sometimes shrubs
Bark often exfoliating, with horizontal lenticles
Leaves simple, margins doubly serrate, dentate, etc.
Flowers imperfect, highly reduced, born on separate pistillate and staminate catkins
Fruit a two winged samara borne between scales

15. Examples Betulaceae Betula (Birch) Alnus (alder)
Betula papyrifera (paper birch)
Betula populifolia (poplar birch)
Alnus (alder)
Alnus incana (speckled alder)
Alnus serrulata (smooth alder)
Corylus americana (hazel nut)
Ostrya virginiana (Hophornbean)
Carpinus caroliniana (ironwood)

16. Betula pendula

17. Betula alleghaniensis

18. Betula occidentalis

19. Betula papyrifera – staminate and pistillate catkins

20. Betula pendula - staminate and pistillate catkins

21. Alnus glutinosa – late winter, old pistillate catkins have shed the fruits, staminate catkins are developing and will mature before leaves appear

22. Alnus serrulata

23. Alnus rugosa

24. Corylus cornuta - hazelnut

25. Carpinus caroliniana

26. Ostyra virginiana – staminate and pistillate catkins

27. Ostyra virginiana

28. 25) Saxifragaceae
27) Vitaceae
28) Geraniaceae
Eurosids I
39) Onagraceae
Eurosids II
26) Crassulaceae
Rosid Clade

29. 39) Onagraceae Evening Primrose Family Herbs (or shrubs to trees)
Flowers usually 4-merous, rarely 2-merous;
Hypanthium present, often very long, and on its rim are inserted sepals, petals and stamens
Pollen produced with viscin threads
Carpels 4 fused together, usually 4 prominent stigmas; large inferior ovary
Fruit usually a capsule

30. Examples Onagraceae Oenothera (evening primrose) Fuchsia
Epilobium (fireweed)

31. Oenothera fructicosa

32. Hypanthium (floral tube)
Oenothera biennis
Ovary (inferior)

33. Oenothera speciosa – anthers showing angular viscid pollen (viscin threads pull the pollen out of the anther)

34. Fuschia spp. – Note inferior ovary and hypanthium

35. Note the very long inferior ovary and short hypanthium
Epilobium
Note the very long inferior ovary and short hypanthium

36. Epilobium augustifolium