Guaiacum


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Related to Guaiacum: Guaiacum sanctum

Guaiacum

 

a genus of evergreen trees of the bean-caper family (Zygophyllaceae). There are six species in tropical America. The trees are tall, with paripinnate leaves, and hard, heavy wood (density, 1.17-1.3 g/cm3), which is used in machine building. The most valuable timber for industrial purposes comes from G. sanctum and G. officinale. (Guaiacum is obtained from the latter.)


Guaiacum

 

contained in the wood (about 22 percent) of the heart of the guaiac tree (lignum vitae; Guaiacum officinale). Guaiacum is obtained by the dry distillation or boiling of the pounded wood. The gum is reddish brown, dissolves in alcohol, acetone, ether, and alkali, and melts at 85° C. It has a density of 1.2 g/cm3. An alcohol solution of guaiacum turns green or blue when oxidized and is used as a hemoglobin reagent.

References in periodicals archive ?
Metodologia: Las especies seleccionadas para este estudio fueron Canella winterana, Croton discolor, Goetzea elegans, Guaiacum officinale, Pimenta racemosa, Simarouba tulae y Thouinia striata.
In the present study, 7 species of native and endemic plants from Puerto Rico were chemically studied, namely, Canella winterana, Pimenta racemosa, Guaiacum officinale, Croton discolor, Goetzea elegans, Thouinia striata, and Simarouba tulae.
Pores frequency was the highest in Guaiacum sanctum, and M.
Ray frequency high, fibers Guaiacum sanctum septate and storied, apotraqueal parenchyma diffuse and diffuse-in- aggregates 17b.
Guaiacum sanctum es una especie maderable de las Americas considerada como amenazada en 11 diferentes paises incluyendo Mexico y listada en CITES Apendice-II.
Guaiacum sanctum e uma especie madeiravel das Americas considerada como ameacada em 11 diferentes paises incluindo o Mexico e listada em CITES Apendice-II.
The LRGV desert woody flora element includes an interesting group of North-South America disjunct taxa--for example, the genera Castela, Condalia, and Guaiacum and the species Celtis pallida and Koeberlinia spinosa (Rzedowski, 1973).
Spatial distribution of Guaiacum sanctum (Zygophyllaceae) seedlings and saplings relative to canopy cover in Palo Verde National Park, Costa Rica
15 Acacia smallii 14 Clematis drummondii 14 Capsicum annuum 12 Pithecellobium flexicaule 12 Prosopis glandulosa 12 Tillandsia recurvata 12 Tillandsia usneoides 11 Leucaena pulverulenta 10 Phaulothamnus spinescens 10 Guaiacum angustifolium 9 Ziziphus obtusifolia 9 Acacia wrightii 8 Fraxinus berlandieriana 8 Heimia salicifolia 8 Malphighia glabra 8 Sapindus drummondii 8 Opuntia lindheimeri 7 Sida sp.
sugar, cotton, tobacco, indigo, jalap, cassia, sassafras, brazil wood and guaiacum, indeed these high value crops, both wild harvested and plantation grown, defined the mercantile world view of the islands.
The species most often associated in the literature with the common name guayacan is Guaiacum coulteri.