The rubber tree book . Fig. 77.—Burr Growths (Actual Size). According to a Dutch authority, the typical form in whichthis fungus appears is a thin, continuous pink sheet which be-comes cracked all over the surface and assumes a yellow tintafter some time. It also occurs in damp situations, such asforks of trees, in the form of a thin matting of silver-colouredfilaments. It is also sometimes found in cracks of the bark inthe form of small pads pink in colour. It penetrates into the 270 THE RUBBER TREE BOOK wood beneath the bark, and cutting away the bark is not alwayssufficient to eradicate it.

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The rubber tree book . Fig. 77.—Burr Growths (Actual Size). According to a Dutch authority, the typical form in whichthis fungus appears is a thin, continuous pink sheet which be-comes cracked all over the surface and assumes a yellow tintafter some time. It also occurs in damp situations, such asforks of trees, in the form of a thin matting of silver-colouredfilaments. It is also sometimes found in cracks of the bark inthe form of small pads pink in colour. It penetrates into the 270 THE RUBBER TREE BOOK wood beneath the bark, and cutting away the bark is not alwayssufficient to eradicate it. Canker (Phytophthora Faberi) is another fungal diseasewhich attacks the stems of Hevea. It is much more frequentin Sumatra than in the Federated Malay States. It is morecommon among Heveas when they have been interplanted withcoffee or cacao. Its presence is not so easily recognized as isthe case with pink disease or Fomes, and often the first and onlyindication of disease is that the trees cease to yield latex. The

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Keywords: ., bookcentury1900, bookdecade1910, bookidrubbertreebo, bookyear1913