What’s a dichotomous key?
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  - Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
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- Dichotomous Key
- Nyctaginaceae
- Mirabilis
Mirabilis
See list of 5 species in this genus- 
      
    
  
    
      
      1a. Involucres 1-flowered, cup-shaped, not accrescent in fruit; calyx salverform, with a prolonged, tubular, connate portion 20–30 mm long
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      1b. Involucres 3- to 5-flowered, broad and open, accrescent in fruit [Fig. 732]; calyx campanulate, with a short, tubular, connate portion 1–2 mm long- 
      
    
  
    
      
      2a. Leaf blades ovate to broad-ovate, the larger ones rounded to cordate at the base and borne on petioles 10–30 mm long; inflorescence eglandular
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      2b. Leaf blades linear to lanceolate or oblong, tapering to the base, sessile or on short petioles up to 5 mm long; inflorescence usually glandular-pubescent- 
      
    
  
    
      
      3a. Leaf blades linear, usually 5 mm wide or narrower; stem glabrous
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      3b. Leaf blades narrow-lanceolate to lanceolate or oblong, 5–20 mm wide; stem pubescent- 
      
    
  
    
      
      4a. Stem pubescent in 2 strips on each internode with short, curved hairs up to 0.5 mm long; anthocarp coarsely tuberculate on the ridges
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      4b. Stem pubescent, at least at the nodes, with spreading hairs 1–2 mm long; anthocarp relatively smooth on the ridges
 
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   Show photos of:  
  
    Each photo represents one species in this genus.
   Show photos of:  
  
    Each photo represents one species in this genus.