41. Seasonal fluctuations of bacterial population and microbial activity in soils cultivated with Eucalyptus and Pinus . 42. Up to grows Scots pine ( Pinus sylvestris ) and black pine ( Pinus nigra ). 43. Up to grows Scots pine ( Pinus sylvestris ) and black pine ( Pinus nigra ). 44. Distinguishing whitebark pine ( " Pinus albicaulis " ), from the related cones. 45. In some older texts the name is spelled " " Pinus tabulaeformis " ". 46. Pollen from Pinus , Betula, Alnus, Rosaceae, Cyperaceae and Artemisia have been found. 47. Pinus greggi in Zimbabwe and Bolivia.48. Exotic hosts include Pinus radiata and other Pinus species, Pseudotsuga menziesii, Larix and Eucalyptus. 49. Exotic hosts include Pinus radiata and other Pinus species, Pseudotsuga menziesii, Larix and Eucalyptus. 50. It has been demonstrated that development of the rust fungus is closely synchronized with Pinus Sylvestris.
