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Key to St. Augustinegrass cultivars

from: Busey, P.  1986.  Morphological identification of St. Augustinegrass cultivars.  Crop Sci. 26:28-32.

1. Lower spikelets in centermost branches > 5.2 mm long
1. Lower spikelets in centermost branches < 5.2 mm long, or else spikelets not available
2
  2. Inflorescence branches < 15; if absent, leaves < 65 mm long
3
    3. Inflorescence branches > 13
    3. Inflorescence branches < 13
  2. Inflorescence branches > 15; if absent, leaves > 65 mm long
4
    4. Internode attenuation (length/thickness) > 25
    4. Internode attenuation (length/thickness) <25

 

see also: Busey, P.  2003. St. Augustinegrass, Stenotaphrum secundatum (Walt.) Kuntze. pp. 309-330 in: Casler, M. D., and Duncan, R. R. (eds.) Biology, breeding, and genetics of turfgrasses. John Wiley & Sons, Inc, Hoboken, NJ .