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加勒比松包括本种加勒比松，巴哈马加勒比松和洪都拉斯加勒比松３个变种。速生耐旱，积累物质的能力很强，１年生幼苗株高为云南松或思茅松的４～５倍，鲜重为１２～１５倍，干重为１５～２０倍。同化物集中在地上部分。针叶含水量与云南松或思茅松相似，约为６５％～７０％，但加勒比松的束缚水含量／自由水含量比值为９～１１，而云南松或思茅松只有５～６。蒸腾强度较小，只及云南松或思茅松的５０％左右。在ＰＥ６诱导水分胁迫下，针叶相对含水量下降较小，质膜透性较低，保水力强。叶绿素含量不因ＰＥＧ诱导水分胁迫而下降。上述表明，加勒比松对干旱环境有明显的适旱性生理特征，比云南松或思茅松更能在干旱环境中生存和生长。
The Caribbean pine includes three species of the Caribbean pine, the Caribbean pine and the Caribbean Honduras caribbean pine. Fast-growing and drought-tolerant, strong accumulation of materials, 1-year-old seedling height of Yunnan pine or Simao pine 4 to 5 times the fresh weight of 12 to 15 times the dry weight of 15 to 20 times. Assimilates are concentrated in the aerial part. The coniferous water content is similar to that of Pinus yunnanensis or Pinus kesiya, which is about 65% -70%, but the bound water content / free water content ratio of Caribbean pine is 9-11 while that of Pinus yunnanensis or Simagongue is only 5-6. Transpiration intensity is small, only about 50% of Yunnan pine or pine. Under the water stress induced by PE6, the relative water content of needles decreased less, the permeability of plasma membrane was lower, and the water retention was stronger. Chlorophyll content did not decrease due to PEG-induced water stress. The above shows that the Caribbean pine has obvious drought-tolerant physiological characteristics of the arid environment, more capable of living and growing in arid environments than Pinus yunnanensis or Pinus sylvestris.