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Guaiacum officinale, lignum vitae. Small ornamental tree or
shrub from Central America. The hard wood, denser than water, is used for mallets and
bowling balls, and yields a resin that is used in medicine, stain, and a chemical
indicator. |
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Guaiacum sanctum, lignum vitae, Foster Botanic
Garden, Honolulu, April, 2004. |
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Larrea tridentata, creosote bush, Sabino Canyon,
AZ, May 21, 2005. |
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Tribulus terrestris, puncture vine. Noxious, often roadside vine
from the Mediterranean region. The fruits are woody, and when mature, will easily
penetrate bicycle tires. |
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Tribulus cistoides, nohu, nohuhohu, caltrop, 1 - Queen's Beach,
O'ahu, 2 - Kaena Point, O'ahu. |
