Esther's photos with the keyword: slow

Centuries old

28 Dec 2012 327
Tate's Grass Tree (Yacca), Kangaroo Island, Australia. Xanthorrhoea is a genus of flowering plants native to Australia. There are 28 species and five subspecies of Xanthorrhoea. They are commonly known as Grass Trees or Yacca (in South Australia). All are perennials and many, but not all species develop an above ground stem. This is rough-surfaced, built from accumulated leaf-bases around the secondarily thickened trunk. The trunk is sometimes unbranched, some species will branch if the growing point is damaged and others naturally grow numerous branches. It is commonly believed that the Xanthorrhoea grow at a rate of about 25 mm per century. They do grow very slowly, but this is a gross underestimate. After an initial establishment phase the average rate of growth varies for each species but can be as high as about 25 mm per year. Thus a five metre tall member of one of the fastest growing Xanthorrhoea would be about 200 years old. A slow one may be some 600 years old. woodgroupsa.org.au/wSAknowledge/grasses.pdf AIMG_6441

Young trees

28 Dec 2012 238
Tate's Grass Tree (Yacca), Kangaroo Island, Australia. Xanthorrhoea is a genus of flowering plants native to Australia. There are 28 species and five subspecies of Xanthorrhoea. They are commonly known as Grass Trees or Yacca (in South Australia). All are perennials and many, but not all species develop an above ground stem. This is rough-surfaced, built from accumulated leaf-bases around the secondarily thickened trunk. The trunk is sometimes unbranched, some species will branch if the growing point is damaged and others naturally grow numerous branches. It is commonly believed that the Xanthorrhoea grow at a rate of about 25 mm per century. They do grow very slowly, but this is a gross underestimate. After an initial establishment phase the average rate of growth varies for each species but can be as high as about 25 mm per year. Thus a five metre tall member of one of the fastest growing Xanthorrhoea would be about 200 years old. A slow one may be some 600 years old. woodgroupsa.org.au/wSAknowledge/grasses.pdf AIMG_6410

Spiked

28 Dec 2012 1 253
Tate's Grass Tree (Yacca), Kangaroo Island, Australia. Xanthorrhoea is a genus of flowering plants native to Australia. There are 28 species and five subspecies of Xanthorrhoea. They are commonly known as Grass Trees or Yacca (in South Australia). All are perennials and many, but not all species develop an above ground stem. This is rough-surfaced, built from accumulated leaf-bases around the secondarily thickened trunk. The trunk is sometimes unbranched, some species will branch if the growing point is damaged and others naturally grow numerous branches. It is commonly believed that the Xanthorrhoea grow at a rate of about 25 mm per century. They do grow very slowly, but this is a gross underestimate. After an initial establishment phase the average rate of growth varies for each species but can be as high as about 25 mm per year. Thus a five metre tall member of one of the fastest growing Xanthorrhoea would be about 200 years old. A slow one may be some 600 years old. woodgroupsa.org.au/wSAknowledge/grasses.pdf AIMG_6412