Among these byproducts is the balsa wood ochroma pyramidale, which according to daniels is a low density wood 120 kgm 3 at 200 kgm 3, has a high growth rate 1825 m tall in. Forests free fulltext improving the modeling of the. Acacia karroo is a drought tolerant savannah species characteristic of open woodland or wooded grassland settings. Balsa trees are native to southern brazil and bolivia north to southern mexico.
In second growth forest in lowland costa rica, ants forage at the foliar nectaries of juvenile ochroma pyramidale. Ochroma article about ochroma by the free dictionary. Because of its fast growth, the wood density is very low, making balsa the. Ochroma pyramidale in the germplasm resources information network grin, u. Ellobium pyramidale a species of small, airbreathing, saltmarsh snail, a terrestrial pulmonate gastropod mollusk in the family ellobiidae. Ochroma lagopus new name ochroma pyramidale specimens collector name. Ochroma pyramidale is a fastgrowing tropical pioneer species known for its lightwood caused by high porosity and thin xylem cell walls. Mechanics of balsa ochroma pyramidale wood by marc borrega sabate and lorna j. Due to its low weight and mechanical endurance, the wood is particularly wellsuited for wind turbine blades, sporting equipment, boats and aircrafts. Growth and yield models for balsa wood plantations in the. Balsa wood is a very lightweight material with many uses. Common in the american lowlands, ochroma pyramidale has a geographic range that extends from southern mexico to bolivia and the west indies record and hess 1949, whitmore and hartshorn 1969. Ochroma pyramidale west indian balsa fouquieria splendens ocotillo asclepias asperula spider milkweed abies religiosa oyamel fir the dimensions are 28 in x 25.
Balsa tree simple english wikipedia, the free encyclopedia. Balsa, with its low density and relatively high mechanical properties, is frequently used as the core in structural sandwich panels, in applications ranging from wind turbine blades to racing yachts. Ochroma lagopus article about ochroma lagopus by the. Ochroma pyramidale, commonly known as the balsa tree also o. Samples of envelope treated png balsa with the insecticide bifenthrin and nontreated balsa, radiata pine pinus radiata sapwood and southern blue gum eucalyptus globulus heartwood were.
If you are unable to see the pdf link please follow the. Pdf physical and chemical properties of kapok ceiba. Twigs terete, rapidly glabrescent, 710 mm diameter, smooth but for petiole and stipule scars. The seeds develop in rugby ball shaped pods that break open to reveal thousands of tiny fluffy seeds that trickle out and drift away on the wind, or drop on the water to float down river. Balsa trees are native to mexico, central america and south america. Text is available under the creative commons attributionsharealike license. Ochroma bicolor rowlee ochroma concolor rowlee ochroma lagopus sw. Media in category ochroma pyramidale the following 83 files are in this category, out of 83 total. Nomenclatural and specimen database of the missouri botanical garden. Most balsa wood used commercially is harvested from plantations, particularly from ecuador. Bonap north american plant atlas of the biota of north america program. Request pdf mechanics of balsa ochroma pyramidale wood balsa wood is one of the preferred core materials in structural sandwich. Foliar nectar production and ant activity on a neotropical.
This is the balsa of modelairplane fame, with extremely light, soft wood. Ochroma definition is a genus of tropical american trees family bombacaceae having very light wood and seeds enveloped in silky floss. Borrega, marc, patrik ahvenainen, ritva serimaa, and lorna gibson. Check other web resources for ochroma pyramidale cav. Ochroma definition of ochroma by the free dictionary. Composition and structure of balsa ochroma pyramidale. We do not intend the plant list to be complete for names of infraspecific rank. This study evaluated the termite susceptibility of papua new guinea png balsa ochroma pyramidale against australias most economically important wooddestroying termite species, coptotermes acinaciformis. Files are available under licenses specified on their description page.
Patterns of hydraulic architecture and water relations of. All structured data from the file and property namespaces is available under the creative commons cc0 license. Ochroma pyramidale is a fastgrowing evergreen tree that. It is a large, fastgrowing tree that can grow up to 30 m 100 ft tall. Can a fastgrowing earlysuccessional tree ochroma pyramidale. The tree is an excellent pioneer species for restoring native woodland and establishing woodland gardens. Triquetral bone, also known by the latin term os pyramidale. In particular, ecuador is the worlds leading producer of balsa wood. Presentation mode open print download current view. The species is an indicator of secondary forests because it occurs in clearings and forest gaps. The relationship between leaf development, foliar nectar production and ant visitation indicates that nectar secretion and ant maintenance are greatest following rapid leaf expansion.
The family includes many commercially important members, e. Useful tropical plants database 2014 by ken fern, web interface by ajna fern with help from richard morris. Ochroma synonyms, ochroma pronunciation, ochroma translation, english dictionary definition of ochroma. Mechanics of balsa ochroma pyramidale wood core reader. Mechanics of balsa ochroma pyramidale wood request pdf. Balsa ochroma pyramidale is a tropical hardwood native to the americas. Mechanics of balsa ochroma pyramidale wood sciencedirect. Ochroma is a genus of flowering plants in the mallow family, malvaceae, containing the sole. Early species selection for tropical reforestation. Plants profile for ochroma pyramidale west indian balsa. These are primarily included because names of species rank are synonyms of.
Wood properties of 7yearold balsa ochroma pyramidale planted in. Borrega, marc, ahvenainen, patrik, serimaa, ritva and lorna gibson. In the process, pioneer tree species have an important role to restore productivity. In the brazilian amazon, large areas of abandoned lands may revert to secondary forest. Ochroma pyramidale, commonly known as the balsa tree. Leaf micronutrient concentrations and potential photosynthesis in ochroma pyramidale established in a degraded land ricardo a. Ochroma concolor rowlee journal of the washington academy of sciences 9.
Department of agriculture agricultural research service. Can a fastgrowing earlysuccessional tree ochroma pyramidale, malvaceae accelerate forest succession. Usda, ars, germplasm resources information network. Download this pdf to learn about migration, the pollinators and plant identifications with decriptions by clicking here. I have tried growing balsa a few times over the past 3 or 4 years, and this was the first time i had ever gotten one to germinate. Balsa ochroma pyramidale, a tropical hardwood native to the americas, is one of the fastest growing wood species, reaching about 20 m in height and up to 75 cm in diameter in 58 years fletcher, 1951. Ochroma limonense rowlee ochroma limonensis rowlee ochroma obtusa rowlee ochroma peruviana i. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. Physical and chemical properties of kapok ceiba pentandra and balsa ochroma pyramidale fibers. The objective of this work was to verify the influence of age on density and. Ochroma pyramidale definition of ochroma pyramidale by. It is a large, fastgrowing tree that can grow up to 30 m tall.
This is due to a variety of factors, including a worldwide oversupply of balsa timber the majority of plantationgrown balsa is still cultivated in regions where the tree is indigenous. Balsa page 24 tropix 7 19982011 cirad dissemination without express authorization is prohibited 26032012 drying normal to slow high risk yes high risk. This fastgrowing tree is indigenous to the tropical regions of the americas, from southern mexico to bolivia. Ochroma pyramidale synonyms, ochroma pyramidale pronunciation, ochroma pyramidale translation, english dictionary definition of ochroma pyramidale. It can reach a height of 30 metres 98 ft, and grows very fast.
Ochroma pyramidale is a fastgrowing tree species, with lifehistory traits that. This tree is notable for its unusual ecology as well as for its famous wood. It has only indistinct growth rings wiselius, 1998. The vulnerability of xylem to waterstressinduced embolism was remarkably similar for the two species but the leaf specific conductivity of petioles and leafbearing stems of the evergreen species, ochroma e.
The balsa tree is a tree that grows in tropical south america. Several lines of evidence suggest that pearl bodies are linked to maintenance of foraging ants on the plant. Wood properties of 7yearold balsa ochroma pyramidale planted. Bibliography on ochroma pyramidale, balsa maya ethnobotany. Usdanrcs database of plants of the united states and its territories. Pdf can a fastgrowing earlysuccessional tree ochroma. The plant list includes 12 scientific plant names of species rank for the genus ochroma. Here, both the cellular and cell wall structure of balsa are described, to enable multiscale modeling and an improved understanding of its mechanical properties. We are currently experiencing intermittent display of pdf links on some article pages.
The plant list includes a further 5 scientific plant names of infraspecific rank for the genus ochroma. Posts about ochroma pyramidale written by earthknight. The database and code is licensed under a creative commons attributionnoncommercialsharealike 3. Balsa grows in tropical areas with high relative humidity. Creative commons attributionnoncommercialsharealike 3. The papua new guinean png balsa ochroma pyramidale cav. Composition and structure of balsa ochroma pyramidale wood.
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