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FIELD KEY TO INDIGENOUS GENERA, FOR USE IN BHUTAN

 

Clump-forming bamboos, culms growing in separate clumps of more than 10 culms:-

 

 Maximum culm diameter > 7cm:-

  Culm covered with dark or thick furry wax, central branches varied, often
   very large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Dendrocalamus

  Culm with light covering of pale wax, central branches fairly uniform, usually
   quite small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. Bambusa

Maximum culm diameter < 7cm:-

  Maximum internode length > 40cm:-

    Leaves with cross-veins as well as long veins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. Borinda
    Leaves with only long veins, no cross-veins:-

      Culm nodes with no collar or with thick flat even collar . . . . . . . . . . . . . . . . . . . . . 4. Cephalostachyum
      Culm nodes with thin projecting wavy collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5. Ampelocalamus

   Maximum internode length < 40cm:-

    Buds tall, chilli-shaped . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. Thamnocalamus
    Buds short, onion-shaped:-

      Culm sheath blade more than 2cm wide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. Bambusa
      Culm sheath blade less than 1 cm wide:-

         Culm sheath rough inside at top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7. Drepanostachyum
         Culm sheath smooth inside at top  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8. Himalayacalamus

Spreading bamboos, culms growing separately or in groups of up to 10 culms:-

  Culms with rings of thorns around the nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9. Chimonobambusa
  Culms with no thorns:-

   Leaves with no cross veins, long veins only:-

     dbh > 4 cm . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10. Melocanna
     dbh 2-4 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11. Pseudostachyum
     dbh < 2 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12. Neomicrocalamus

   Leaves with distinct cross veins as well as long veins:-

     Long rhizome lengths without roots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13. Yushania
     Rhizome rooting at all nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14. Sarocalamus

 

[Home] [Key to Genera] [Dendrocalamus] [Bambusa] [Borinda] [Cephalostachyum] [Ampelocalamus] [Thamnocalamus] [Drepanostachyum] [Himalayacalamus] [Chimonobambusa] [Melocanna] [Pseudostachyum] [Neomicrocalamus] [Yushania] [Sarocalamus]