The winged petiole and trifoliate leaf of "Crescentia alata" resembles a crucifixion cross, so is sometimes planted in the Philippines as a religious symbol. "Handroanthus" and the unrelated "Guaiacum" (Zygophyllaceae) have the hardest, heaviest, and most durable wood of the American tropics. Important timber trees in "Handroanthus" include "H. heptaphyllus", "H. serratifolius", "H. guayacan", "H. chrysanthus", and "H. billbergii". "Tabebuia rosea" (including "Tabebuia pentaphylla") is harvested for lumber throughout the New World tropics. "Tabebuia heterophylla", and "Tabebuia angustata" are important sources of lumber for some of the Caribbean islands. Several species of "Catalpa" are also important timber trees. "Paratecoma" was once the most important timber tree of the Rio de Janeiro area, but relentless exploitation has brought it to the verge of extinction. Several of the rare species of Bignoniaceae produce excellent wood, but are often not recognized by lumberjacks. Several uses of plants in Bignoniaceae are known locally. "Parmentiera aculeata" is grown for its edible fruit in Central America and southern Mexico. The powdered seeds and sometimes the fruit pulp of "Crescentia cujete" and "Crescentia alata" are used in Nicaragua to make a refresco called "semilla de jicaro". Onion-scented species of "Mansoa" and clove-scented species of "Tynanthus" are used as condiments. In northern Colombia, shavings of the stems of "Dolichandra quadrivalvis" are added to bait which is left overnight near the burrows of crabs. The crabs are paralyzed for a few hours after eating the bait and are picked up by crabbers in the morning. The crabs recover before they reach market, and no harm from eating them has been reported. "Tanaecium nocturnum" is the source of a hallucinogenic drug. Its crushed leaves and stems are used to enervate bees while gathering honey. "Fridericia chica" is the source of a red pigment used in the Amazon Basin for body paint and for dye in basketry. "Cybistax antisyphilitica" is the source of a blue dye commonly used in Peru.