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Eurosids I

33) Fabaceae (Leguminosae). 29) Oxalidaceae. 30) Euphorbiaceae. 31) Violaceae. 32) Salicaceae. 34) Rosaceae. 35) Ulmaceae. 36) Cucurbitaceae. 37) Fagaceae. 38) Betulaceae. Eurosids I. 37) Fagaceae. Beech or Oak Family Trees and shrubs

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Eurosids I

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  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. ExamplesFagaceae • 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. 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. ExamplesBetulaceae • Betula (Birch) • 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. ExamplesOnagraceae • 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. Epilobium Note the very long inferior ovary and short hypanthium

  36. Epilobium augustifolium

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