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DENDROLOGY-LEAVES

This ppt is all about leaf shape, leaf margin and leaf base.

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DENDROLOGY-LEAVES

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  1. LEAF SHAPE LEAVES LEAF BASE LEAF MARGIN By: Ara Shane G. Ajoc BS-Enviornmental Science

  2. LEAF SHAPES

  3. Leaf morphology • Leaf shapes • Angiosperm • Ovate

  4. Leaf morphology • Leaf shapes • Angiosperm • Obovate

  5. Leaf morphology • Leaf shapes • Angiosperm • Cordate

  6. Leaf morphology • Leaf shapes • Angiosperm • Lanceolate

  7. Leaf morphology • Leaf shapes • Angiosperm • Linear

  8. Leaf morphology • Leaf shapes • Angiosperm • Deltoid

  9. Leaf morphology • Leaf margins • Angiosperm • Entire

  10. Leaf morphology • Leaf margins • Angiosperm • Serrate

  11. Leaf morphology • Leaf margins • Angiosperm • Sinuate

  12. Leaf morphology • Leaf margins • Angiosperm • Lobed

  13. Leaf morphology • Leaf margins • Angiosperm • Crenate

  14. LEAF BASE

  15. 2. ACUTE – if shaped like an acute angle but not attenuated apex as in almaciga 1. CUNEATE – if wedge-shaped or tapering evenly to a narrow acute base as in teak.

  16. 4. ROUNDED– if like a full sweeping arc as in narra. • 3. OBTUSE – if forming an obtuse angle or an angle of more than 45° but not more than 90° as in caimito.

  17. 6. CORDATE – if heart-shaped like alim. 5.TRUNCATE – if abruptly cut off transversely and forming an angle of approximate 180° as in bo tree.

  18. 8. INEQUILATERAL– if with two sides of the base unequal but not terminating at almost the same level as in alupag. 7. OBLIQUE– if both the unequal sides of the blade meet at almost the same level at the base as in ipil.

  19. 10. SAGGITATE – if arrow- shaped or with auricles turned inwards. 9. AURICULATE – if with ear-like appendages formed by the two projecting sides of the base as in gabi.

  20. 12. DECURENT– if base of the blade appears to run down the stem as in kusibeng. 11. HASTATE– if halberd- shaped or with auricles turned inwards as in baging-tigre.

  21. LEAF MARGIN

  22. 2. REPAND – if undulate or slightly wavy line as in lago. 1. ENTIRE – if smooth or without lobes or teeth, it follows a continuous, unbroken smooth lines as in narra.

  23. 4. CRENATE– if blunt to rounded teeth as in tuai. 3. SINUATE – if deeply or strongly wavy as in amugis.

  24. 6. DENTATE – with teeth pointing outward as in baho-baho. 5. SERRATE – with saw- toothed or with sharp teeth pointing towards the apex as in agosip.

  25. 8. LOBED – if divided into lobes that are separated by rounded sinuses which extends not more than halfway to the midrib as in marang banguhan. 7. REVOLUTE – if margins rolled under as in Southern lanete.

  26. 9. CLEFT – if divided into lobes and separated by narrow or acute sinuses which extends more than halfway to the midrib as in rimas. 10. PARTED – if divided by sinuses which extends nearly to the midrib.

  27. 12. DOUBLY SERRATE – if teeth margins are again serrated as in papua. 11. DOUBLE CRENATE – if twice crenated.

  28. THANK YOU

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