Each "thumbnail" image below is linked to a larger photograph.
|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.|
||Guaiacum sanctum, lignum vitae, Foster Botanic Garden, Honolulu, April, 2004.|
||Larrea tridentata, creosote bush, Sabino Canyon, AZ, May 21, 2005.|
|Tribulus terrestris, puncture vine. Noxious, often roadside vine from the Mediterranean region. The fruits are woody, and when mature, will easily penetrate bicycle tires.|
|Tribulus cistoides, nohu, nohuhohu, caltrop, 1 - Queen's Beach, O'ahu, 2 - Kaena Point, O'ahu.|
Plant Family Access Page