Cojoba arborea
Encyclopedia
Cojoba arborea is a leguminous tree of the family Fabaceae
Fabaceae
The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, is a large and economically important family of flowering plants. The group is the third largest land plant family, behind only the Orchidaceae and Asteraceae, with 730 genera and over 19,400 species...

 found in the Caribbean
Caribbean
The Caribbean is a crescent-shaped group of islands more than 2,000 miles long separating the Gulf of Mexico and the Caribbean Sea, to the west and south, from the Atlantic Ocean, to the east and north...

, Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, and Central America
Central America
Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

, southward to Ecuador
Ecuador
Ecuador , officially the Republic of Ecuador is a representative democratic republic in South America, bordered by Colombia on the north, Peru on the east and south, and by the Pacific Ocean to the west. It is one of only two countries in South America, along with Chile, that do not have a border...

 in South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

 at elevations of 0–1300 m (0–4,265.1 ft). The tree is not common in naturalized forests, but it can be found in open sites and transition zones.

It can grow 15–18 m (49.2–59.1 ft) tall with a truck diameter to 50 centimetres (19.7 in). The curved pod of the mature fruit is reddish-purple and 13–17 cm (5.1–6.7 in) long, carrying 4-6 black and/or white ellipsoidal seeds per pod. Leaves are alternate, bipinnate with 8-16 pairs of leaflets, non-serrated, elliptical, 28–42 cm (11–16.5 in) long. Leaflet
Leaflet
A leaflet in botany is a part of a compound leaf. A leaflet may resemble an entire leaf, but it is not borne on a stem as a leaf is, but rather on a vein of the whole leaf. Compound leaves are common in many plant families...

s are on average 0.2 centimetre (0.078740157480315 in) wide by 4–6 cm (1.6–2.4 in) long. Flower
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...

 inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

s are white, hermaphroditic, 0.6–0.9 cm (0.236220472440945–0.354330708661417 in) long, with peduncles 5–10 cm (2–3.9 in) long. The flowering period is from April to June.

Wood

The cambium
Cork cambium
Cork cambium is a tissue found in many vascular plants as part of the periderm. The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems...

 is clear and the cortex is a clear-brown color. The wood is heavy but easy to work. The grains are regular but tend to crack when the wood is dry. The lumber is dimensionally stable when dry. It is resistant to attack by insects and very durable. The lumber is used for heavy construction, stakes and posts, fine carpentry, flooring, stairways, plywood
Plywood
Plywood is a type of manufactured timber made from thin sheets of wood veneer. It is one of the most widely used wood products. It is flexible, inexpensive, workable, re-usable, and can usually be locally manufactured...

 sheets, paper
Paper
Paper is a thin material mainly used for writing upon, printing upon, drawing or for packaging. It is produced by pressing together moist fibers, typically cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets....

 manufacture, cabinetry and other applications. The price of the wood is stable and has a tendency to increase in value. The wood is exported to the United States under the name of bahama sibucú.

Silviculture

The seeds are not viable long after pod maturity, with 80% viability after 10 days of storage and 0% viability after 25 days of storage. If the seeds are fresh, 90% of them germinate
Germination
Germination is the process in which a plant or fungus emerges from a seed or spore, respectively, and begins growth. The most common example of germination is the sprouting of a seedling from a seed of an angiosperm or gymnosperm. However the growth of a sporeling from a spore, for example the...

 in soil containing 30% organic matter. Viable seeds germinate 22 days after planting. They tend to tolerate a wide range of pH
Soil pH
The soil pH is a measure of the acidity or basicity in soils. pH is defined as the negative logarithm of the activity of hydrogen ions in solution. It ranges from 0 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is basic. Soil pH is considered a master variable in soils as it...

conditions, from 4.8 to 8.0. Trees can be planted at 5-8 months after seed germination when the roots have extended to the bottom of the growing bags. Plantations need to be started during the rainy season.
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