Prosopis velutina

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Prosopis velutina
Velvet mesquite.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Prosopis
Species:
P. velutina
Binomial name
Prosopis velutina

Prosopis velutina, commonly known as velvet mesquite, is a small to medium-sized tree. It is a legume adapted to a dry, desert climate. Though considered to be a noxious weed in states outside its natural range,[ citation needed ] it plays a vital role in the ecology of the Sonoran Desert.

Contents

Distribution

The velvet mesquite is native to the Sonoran, Mojave, and Chihuahuan Deserts. It grows at elevations below 4,000 to 5,000 feet (1,200 to 1,500 m) in desert grasslands and near washes. The main distribution is in central and southern Arizona and in adjacent Sonora, Mexico. Near waterways, mesquites can form deciduous woodlands called bosques. [2]

Description

Blossoming P. velutina in Anza-Borrego Desert State Park Prosopis velutina Anza-Borrego.jpg
Blossoming P. velutina in Anza-Borrego Desert State Park

Velvet mesquite can grow to 30–50 ft (9–15 m) tall or more. It grows larger in areas with ample water, smaller in open, dry grasslands. The youngest branches may be green and photosynthetic. [3] Young bark is reddish-brown and smooth. As it matures, it becomes a dark, dusty gray or brown and takes on a shredded texture. Yellow thorns up to one inch long appear on the young branches. The leaves are about 3–6 in (7.5–15 cm) long, fine, and bipinnately compound. They fold closed at night.

Composite image of velvet mesquite leaves folding up in the evening in response to decreasing light levels Mesquite-leaves-fold.jpg
Composite image of velvet mesquite leaves folding up in the evening in response to decreasing light levels

The taproot sinks deep into the earth, far deeper than the height of the tree, taking advantage of water sources inaccessible to most plants. Roots extend to about 50 ft (15 m), but depths as much as 175 ft (53 m) have been recorded. [2]

Velvet mesquite seeds Prosopis velutina seeds.jpg
Velvet mesquite seeds
Dry velvet mesquite seedpods Velvet mesquite pods.JPG
Dry velvet mesquite seedpods
Flowering velvet mesquite catkins Velvet mesquite catkins.jpg
Flowering velvet mesquite catkins

The mesquite is deciduous, losing its leaves in winter, and leafs out again in the spring when all danger of frost is past. Because of its deep root system, it keeps its leaves in the dry months of summer in all but the most severe drought years. The flowers are yellow and form in the spring (after the leaves) in dense cylindrical clusters (catkins) roughly 4 in (10 cm) long. Long seedpods (legumes) form from the flowers. They are bright green and look somewhat like pea pods when young. Mature, dry pods are hard and contain several hard, dry, brown seeds. The seeds need to be scarified before they can germinate. This scarification typically takes place in the digestive tracts of animals, which eat the seeds and then disperse them widely, as the seed takes days to pass through the animal. [4]

Ecology

The mesquite contributes greatly to the desert ecosystem. Coyotes, round-tailed ground squirrels, collared peccaries, mule deer, white-tailed deer, and jackrabbits all eat mesquite pods, as do livestock when they are available. [2] Birds feed on the flower buds. As a member of the legume family, mesquites fix nitrogen in the soil. Mesquites can serve as nurse trees to young cacti, such as the saguaro. The shade of its branches provides protection for small mammals, especially burrowing animals. Native Americans used the seeds for food, grinding them into a flour. The bark was used for baskets and fabrics and the wood for firewood and building. The leaves and gum were used as medicine.

A round-tailed ground squirrel eating velvet mesquite pods Ground squirrel mesquite.jpg
A round-tailed ground squirrel eating velvet mesquite pods

The range of the velvet mesquite has changed because of grazing. Cattle not only dispersed mesquite seeds, but they also overgrazed the land, resulting in fewer range fires to control the mesquite population. Mesquites grew more densely and spread into what had been grassland. [2] Consequently, velvet mesquite is considered an invasive species or noxious weed in several states. [5] However, mesquite bosques cover only a small fraction of the area they covered before human settlement. Agriculture, firewood cutting, housing developments, and the lowering of the water table have all contributed to the loss of native mesquite stands. [2]

Uses

Food

Mesquite pods are an important source of food for humans as well as native wildlife. Pods are considered a slow-release food due to galactomannin gums which have been found to lower glycemic responses. Their glycemic index is 25%, compared to 60% for sweet corn, and 100% for white sugar.

Dried and toasted, the pods are ground into mesquite meal and mesquite flour. Both flour and meal are used to make cakes, breads, muffins, and pancakes.

See also

Related Research Articles

<span class="mw-page-title-main">Mesquite</span> Several species of leguminous trees

Mesquite is a common name for some plants in the genus Prosopis, which contains over 40 species of small leguminous trees. They are native to dry areas in the Americas. They have extremely long roots to seek water from very far under ground. As a legume, mesquites are one of the few sources of fixed nitrogen in the desert habitat. The trees bloom from spring to summer. They often produce fruits known as "pods". Prosopis spp. are able to grow up to 8 metres (26 ft) tall, depending on site and climate. They are deciduous and depending on location and rainfall have either deep or shallow roots. Prosopis is considered long-lived because of the low mortality rate after the dicotyledonous stage and juveniles are also able to survive in conditions with low light and drought. The Cahuilla indigenous people of western North America were known to eat the seeds of mesquite.

<i>Senegalia greggii</i> Species of tree

Senegalia greggii, formerly known as Acacia greggii, is a species of tree in the genus Senegalia native to the southwestern United States and northern Mexico, from the extreme south of Utah south through southern Nevada, southeast California, Arizona, New Mexico and western Texas to Baja California, Sinaloa and Nuevo León in Mexico. The population in Utah at 37°10' N is the northernmost naturally occurring Senegalia species anywhere in the world.

<i>Prosopis</i> Genus of legumes

Prosopis is a genus of flowering plants in the family Fabaceae. It contains around 45 species of spiny trees and shrubs found in subtropical and tropical regions of the Americas, Africa, Western Asia, and South Asia. They often thrive in arid soil and are resistant to drought, on occasion developing extremely deep root systems. Their wood is usually hard, dense and durable. Their fruits are pods and may contain large amounts of sugar. The generic name means "burdock" in late Latin and originated in the Greek language.

<span class="mw-page-title-main">Carob</span> Small tree grown for its edible pods and landscaping

The carob is a flowering evergreen tree or shrub in the Caesalpinioideae sub-family of the legume family, Fabaceae. It is widely cultivated for its edible fruit, which takes the form of seed pods, and as an ornamental tree in gardens and landscapes. The carob tree is native to the Mediterranean region and the Middle East. Portugal is the largest producer of carob, followed by Italy and Morocco.

<i>Neltuma juliflora</i> Species of legume

Neltuma juliflora is a shrub or small tree in the family Fabaceae, a kind of mesquite. It is native to Mexico, South America and the Caribbean. It has become established as an invasive weed in Africa, Asia, Australia and elsewhere. It is a contributing factor to continuing transmission of malaria, especially during dry periods when sugar sources from native plants are largely unavailable to mosquitoes.

<i>Prosopis pubescens</i> Species of tree

Strombocarpa pubescens, commonly known as screwbean mesquite, is a species of flowering shrub or small tree in the pea family, Fabaceae, that is native to the southwestern United States and northern Mexico.

<i>Parkinsonia microphylla</i> Species of tree

Parkinsonia microphylla, the yellow paloverde, foothill paloverde or little-leaved palo verde; syn. Cercidium microphyllum), is a species of palo verde.

<i>Prosopis pallida</i> Species of legume

Prosopis pallida is a species of mesquite tree. It has the common names kiawe, huarango and American carob, as well as "bayahonda", "algarrobo pálido", and "algarrobo blanco". It is a thorny legume, native to Colombia, Ecuador and Peru, particularly drier areas near the coast. While threatened in its native habitat, it is considered an invasive species in many other places.

<i>Prosopis glandulosa</i> Species of tree

Neltuma glandulosa, formerly Prosopis glandulosa, commonly known as honey mesquite, is a species of small to medium-sized, thorny shrub or tree in the legume family (Fabaceae).

<i>Vachellia nilotica</i> Species of flowering plant in the bean family Fabaceae

Vachellia nilotica, more commonly known as Acacia nilotica, and by the vernacular names of gum arabic tree, babul, thorn mimosa, Egyptian acacia or thorny acacia, is a flowering tree in the family Fabaceae. It is native to Africa, the Middle East and the Indian subcontinent. It is also considered a 'weed of national significance' and an invasive species of concern in Australia, as well as a noxious weed by the federal government of the United States.

<i>Vachellia karroo</i> Species of legume

Vachellia karroo, commonly known as the sweet thorn, common acacia, Karoo thorn, Cape gum or cockspur thorn, is a species of Vachellia, in the Mimosa sub-family (Mimosoideae) of the Fabaceae or pea family, which is native to southern Africa from southern Angola east to Mozambique, and south to South Africa.

<span class="mw-page-title-main">White-throated woodrat</span> Species of rodent

The white-throated woodrat is a species of rodent in the family Cricetidae. It is found from central Mexico north to Utah and Colorado in the United States. It is primarily a western species in the United States, extending from central Texas west to southeastern California. Populations east of the Rio Grande in New Mexico and Trans-Pecos Texas, previously considered to be variants of the white-throated woodrat, have since 1988 been assigned to the white-toothed woodrat.

<i>Prosopis tamarugo</i> Species of plant

Prosopis tamarugo, commonly known as the tamarugo, is a species of flowering tree in the pea family, Fabaceae, subfamilia Mimosoideae. It is only found in northern Chile, particularly in the Pampa del Tamarugal, some 70 km (43 mi) east of the city of Iquique. This bushy tree apparently grows without the benefit of rainfall, and it is thought to obtain some water from dew. Studies indicate it is a Phreatophyte; having deep roots that tap into ground water supplies. It also participates in hydraulic redistribution moving water from deeper levels to the upper and also reversing the process in times of severe drought.

<i>Archidendron pauciflorum</i> Species of plant

Archidendron pauciflorum, commonly known as djenkol, jengkol or jering, is a species of flowering tree in the pea family, Fabaceae. It is native to Southeast Asia, where the seeds are also a popular dish. They are mainly consumed in Indonesia, Thailand, Myanmar, and Vietnam, prepared by frying, boiling, or roasting, and eaten raw. The beans are mildly toxic due to the presence of djenkolic acid, an amino acid that causes djenkolism. The beans and leaves of the djenkol tree are traditionally used for medicinal purposes, such as purifying the blood. To date, djenkol is traded on local markets only.

<span class="mw-page-title-main">Mesquite Bosque</span>

Mesquite Bosque is a vegetative association within the Southwestern United States, under the Kuchler scheme of plant association categories.

<span class="mw-page-title-main">Mesquite flour</span>

Mesquite flour is made from the dried and ground pods of the mesquite, a tree that grows throughout Mexico and the southwestern US in arid and drought-prone climates. The flour made from the long, beige-colored seedpods has a sweet, slightly nutty flavor and can be used in a wide variety of applications. It has a high-protein, low-glycemic content and can serve as a gluten-free replacement for flours that contain gluten.

Flora of the Sonoran Desert includes six subdivisions based on vegetation types. Two are north of the boundary between the United States and Mexico, and four are south of the boundary. The flora of the Colorado Desert are influenced by the environment of the very dry and hot lower areas of the Colorado River valley, which may be barren, treeless, and generally have no large cacti. Flora of the Arizona Upland are comparatively lush, with trees and large columnar cacti that can withstand winter frosts. Those subdivisions of the Sonoran Desert which lie south of the international border are characterized by plants that cannot withstand frost.

Flora of the Arizona Upland includes higher elevation Sonora Desert plants that require more moisture and cooler climates than those of the adjacent Sonoran Desert areas in the Colorado Desert of the lower Colorado River valley area, and which can withstand frost, unlike plants of the Sonoran Desert south of the border between the United States and Mexico.

<i>Prosopis chilensis</i> Species of legume

Prosopis chilensis is a species of tree in the genus Prosopis, belonging to the family Fabaceae. It is found in parts of central Chile, southern Peru, Bolivia, and Andean (northwestern) Argentina. Its common names include Chilean mesquite, cupesí, and Chilean algarrobo. It is used for providing shade, for animal feed, and firewood.

<i>Prosopis flexuosa</i> Species of legume

Prosopis flexuosa, commonly known as tortuous mesquite and a variety of Spanish vernacular names including algarrobo dulce and algarrobo negro, is a species of flowering tree in the genus Prosopis of the family Fabaceae. It is found in arid and semi-arid regions of Argentina, Bolivia and Chile, including the western Gran Chaco and the Monte Desert, where it is a conspicuous and characteristic plant of the region. Its timber is used for construction, charcoal and fuel and its fruits are eaten by humans and livestock.

References

  1. Botanic Gardens Conservation International (BGCI).; IUCN SSC Global Tree Specialist Group. (2019). "Prosopis velutina". IUCN Red List of Threatened Species . 2019: e.T130521611A149058212. doi: 10.2305/IUCN.UK.2019-2.RLTS.T130521611A149058212.en . Retrieved 4 October 2021.
  2. 1 2 3 4 5 "Prosopis velutina". www.fs.fed.us. Retrieved 2008-05-01.
  3. Turner, Raymond M. (1963). "Growth in four species of Sonoran Desert trees". Ecology. 44 (4): 760–765. doi:10.2307/1933023. JSTOR   1933023.
  4. Fisher, C. E.; Meadors, C. H.; Behrens, R.; [and others]. 1959. Control of mesquite on grazing lands. Bull. 935. College Station, TX: Texas Agricultural Experiment Station. 24 p. In cooperation with: U.S. Department of Agriculture.
  5. "Plants Profile for Prosopis velutina (velvet mesquite)". USDA Plants. Retrieved 2008-05-01.
  6. "Arizona Municipal Water Users Association". www.amwua.org. Archived from the original on 2011-07-19.
  7. Felger, R. S. and M. B. Moser, 1985, People of the Desert and Sea. University of Arizona Press, Tucson, AZ.
  8. Diaz, J. L. 1976. Usos de las Plantas Medicinales de Mexico. Instituto Mexicano para el Estudio de las Plantas Medicinals, Mexico, D.F.

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