Dendro Twigs

Card Set Information

Author:
kdog2009
ID:
184709
Filename:
Dendro Twigs
Updated:
2014-03-26 11:43:09
Tags:
dendrology tree twigs
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Description:
Dendrology - Major Twig Characteristics
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  1. Valvate Buds
    • Alnus
    • Salix (some)
    • Acer pensylvanicum
    • Liriodendron
    • Platanus
    • Cornus (some)
  2. Chambered Pith
    • Juglans
    • Celtis
  3. Diaphragmed Pith
    Liriodendron
  4. Naked Bud
    • Juglans
    • Rhamnus frangula
    • Hamamelis
  5. Star Pith
    • Quercus
    • Populus
    • Carya (pentagon)
    • Aesculus (hexagon)
    • Fagus (sun rays)
  6. Buds Clustered at Tips
    • Quercus
    • Fraxinus
    • Acer (except A. pensylvanicum, striped maple)
    • Prunus pensylvanica (pin cherry)
  7. Catkins
    Betulaceae
  8. Opposite Leaves
    • Sapindaceae (Aesculus, Acer)
    • Oleaceae (Fraxinus)
    • Cornaceae (Cornus)

    Dogwood, Ash, Maple (DAM)
  9. Alnus
    • valvate buds
    • stalked, purplish buds
  10. Betula
    • short shoots
    • catkins
    • woody cone-like fruit
    • twig with white lenticels
  11. Carpinus
    • textured twig
    • lower buds stalked
    • leaf scar like a shelf (angled outward)
  12. Corylus
    • red hairs on twigs
    • slightly fringed bud scales
  13. Ostrya
    • long, straight grooves on twigs
    • fuzzy, dark brown twig
    • 2-toned bud
  14. Quercus
    • buds clustered at tips
    • white, star-shaped pith
  15. Fagus
    • long, pointy buds
    • "slinky" stacked, prominent leaf scars
  16. Juglans
    • naked bud
    • chambered pith
    • monkey-face leaf scar (w/brow = cinera, w/o brow = nigra)
  17. Carya
    • large, round, cottonball buds
    • numerous vascular bundles like skeleton face ("day of the dead" face paint)
    • "quasi-star" pith
  18. Ulmus
    • finely pubescent twigs
    • crooked terminal bud
    • many clustered, round flower buds w/white hairs
  19. Celtis
    • chambered pith
    • crooked 45˚ angle terminal bud
    • lateral buds closely appressed to stem
    • vascular bundle scars like donut
  20. Morus
    • scratchy, scabrous twig
    • flat/squished lower part of bud
    • sticking out upper part of bud
  21. Rhamnus
    • pseudo-opposite buds, like horns
    • dark buds
    • middle finger (if cathartica)
  22. Prunus
    • dark, textured twig w/white lenticels
    • very tiny, angled, appressed buds
    • some clustered terminal buds (pin cherry)
  23. Amelanchier
    • super fun buds
    • dark brown twig, lighter tan buds
    • prominent, sticking out bud scales
  24. Crataegus
    • 2" long thorns
    • small red buds
  25. Cercis
    • can be zig-zagged
    • teeny tiny leaf scar  
    • point bud "hat" with dark edges and red center
  26. Gleditsia
    • branching 3-pronged stipular thorns
    • zig-zag twigs
  27. Robinia
    • stipular spines (short)
    • ridged, glabrous twig
  28. Salix
    • super teeny buds (can be valvate)
    • appressed buds
  29. Populus
    • star shaped, dark pith
    • deltoides: super long red/green buds like alien claws
    • tremuloides: angled buds, elevated leaf scar
  30. Liriodendron
    • long, valvate bud like duckbill
    • diaphragmed pith
    • vascular bundle scars like pepperoni pizza
  31. Platanus
    • valvate bud submerged in leaf scar
    • bud a snarky tongue sticking out
  32. Acer
    • furry, appressed buds 
    • opposite 
    • leaf scar narrow "V" like alien face
    • leaf scars come together at a point (mainly negundo)
  33. Aesculus
    • opposite
    • knotty twigs
    • leaf scar D shaped, like a moth
  34. Tilia
    • lop-sided bud (large scale to one side)
    • only 2 bud scales
  35. Ailanthus
    • large, light twig like a wand
    • huge leaf scar in "V" shape like a moth
    • tiny bud, appressed
  36. Catalpa
    • whorled
    • sunken leaf scar like moon crater
  37. Fraxinus
    • clustered terminal bud
    • opposite
    • crescent moon leaf scar (americana) to D-shaped leaf scar (pennsylvanica)

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