iAcacia greggii
Acacia greggii, Tonto National Monument, Arizona
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Fabales Family: Fabaceae Subfamily: Mimosoideae Genus: Acacia Species: A. greggii
Binomial name
Acacia greggii A.Gray

Acacia greggii is a species of Acacia native to the southwestern United States and northern Mexico, from the extreme south of Utah (where, at 37°10' N it is the northernmost naturally-occurring Acacia species anywhere in the world) south through southern Nevada, southeast California, Arizona, New Mexico and western Texas to Baja California, Sinaloa and Nuevo León in Mexico. Image File history File links Acacia_greggii1. ... Overview of Tonto National Monument Tonto National Monument is a National Monument in central Arizona, United States. ... Official language(s) English Capital Phoenix Largest city Phoenix Area  Ranked 6th  - Total 113,998 sq mi (295,254 km²)  - Width 310 miles (500 km)  - Length 400 miles (645 km)  - % water 0. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Green algae land plants (embryophytes) non-vascular embryophytes Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses vascular plants (tracheophytes) seedless vascular plants Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongue ferns seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ... Magnoliopsida is the botanical name for a class: this name is formed by replacing the termination -aceae in the name Magnoliaceae by the termination -opsida (Art 16 of the ICBN). ... Families Fabaceae (legumes) Quillajaceae Polygalaceae (milkwort family) Surianaceae The Fabales are an order of flowering plants, included in the rosid group of dicotyledons. ... Subfamilies Faboideae Caesalpinioideae Mimosoideae References GRIN-CA 2002-09-01 The name Fabaceae belongs to either of two families, depending on viewpoint. ... Infrafamilies Acacieae Ingeae Mimoseae Mimozygantheae Parkieae The Mimosoideae is a subfamily of the Family Fabaceae characterized by flowers with small petals and numerous prominent stamens. ... Species About 1,300; see List of Acacia species Acacia tree in the Serengeti, Tanzania Acacia is a genus of shrubs and trees of Gondwanian origin belonging to the Subfamily Mimosoideae of the family Fabaceae, first described from Africa by Linnaeus in 1773. ... In biology, binomial nomenclature is the formal method of naming species. ... Asa Gray, Botanist Asa Gray (November 18, 1810 - January 30, 1888) is considered the most important American botanist of the 19th century. ... Species About 1,300; see List of Acacia species Acacia tree in the Serengeti, Tanzania Acacia is a genus of shrubs and trees of Gondwanian origin belonging to the Subfamily Mimosoideae of the family Fabaceae, first described from Africa by Linnaeus in 1773. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... This article does not cite its references or sources. ... This article is becoming very long. ... Official language(s) English Capital Phoenix Largest city Phoenix Area  Ranked 6th  - Total 113,998 sq mi (295,254 km²)  - Width 310 miles (500 km)  - Length 400 miles (645 km)  - % water 0. ... Capital Santa Fe Largest city Albuquerque Area  Ranked 5th  - Total 121,665 sq mi (315,194 km²)  - Width 342 miles (550 km)  - Length 370 miles (595 km)  - % water 0. ... Official language(s) See: Languages of Texas Capital Austin Largest city Houston Area  Ranked 2nd  - Total 268,581 sq mi (695,622 km²)  - Width 773 miles (1,244 km)  - Length 790 miles (1,270 km)  - % water 2. ... Baja California (literally lower California in Spanish) is the northernmost state of Mexico. ... Sinaloa is bordered by the states of Sonora to the north, Chihuahua to the northeast, Durango to the east, and Nayarit to the south. ... Nuevo León (Spanish for New León, after the former kingdom in Spain) is a state located in north-eastern Mexico. ...

Catclaw Acacia thorn

Common names include Catclaw Acacia, Gregg's Catclaw, Devil's Claw, Paradise Flower, Wait-a-minute tree, and Wait-a-bit tree; these names mostly come from the fact that the tree has numerous hooked thorns with the shape and size of a cat's claw, that tend to hook onto passers-by; the hooked person must stop ("wait a minute") to remove the thorns carefully to avoid injury or shredded clothing. Image File history File links Acacia_greggii2. ... Look up CAT, cat, Cat in Wiktionary, the free dictionary. ...

Morphology

It is a large shrub or small tree growing to 10 m tall with a trunk up to 20-30 cm diameter. The grey-green leaves are deciduous, and bipinnate, divided into 1-3 pairs of pinnae, each pinna 2-3 cm long with 10-18 leaflets 3-6 mm long. Pinnae are most frequently in two pairs, with the proximal pair perpendicular to the petiolule and the distal pair forming a V at the tip. The flowers are produced in dense cylindrical spikes, each flower with five yellow petals 3 mm long and numerous yellow stamens 6 mm long. The fruit is a flat, twisted legume (pod) 6-15 cm long, containing several hard, dark brown seeds. The seed pod is constricted between seeds (a loment, and seed dispersal occurs both through dehiscence and breaks at these constrictions. A broom shrub in flower A shrub or bush is a horticultural rather than strictly botanical category of woody plant, distinguished from a tree by its multiple stems and lower height, usually less than 6 m tall. ... The coniferous Coast Redwood, the tallest tree species on earth. ... The leaves of a Beech tree A leaf with laminar structure and pinnate venation In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... Deciduous means temporary or tending to fall off (deriving from the Latin word decidere, to fall off). ... Clivia miniata A cluster of flowers (Clivia miniata) A Blue Summer Flower. ... Fruit stall in Barcelona, Spain. ... Varieties of soybean seeds, a popular legume Pea pods The term legume has two closely related meanings in botany, a situation encountered with many botanical common names of useful plants, whereby an applied name can refer to either the plant itself, or to the edible fruit (or useful part). ... A ripe red jalapeno cut open to show the seeds For other uses, see Seed (disambiguation). ... A loment is a type of modified legume that breaks apart at constrictions occurring between the segments of the seeds. ...

Ecology

A. greggii is most common in washes where its roots have access to deep water. Its seeds require physical scarification in order to germinate. This effectively prevents germination unless a flash flood disturbs the area and deposits enough water to increase the likelihood that seedlings will be able to establish deep enough roots to survive the dry season. Catclaw is fully drought deciduous, and will usually lack leaves for most of the year. A. greggii has extrafloral nectaries, a trait shared with other acacias. A tentative connection has been made between these glands and insects that would suggest a mutualistic relationship (as found in other acacias). Ants are known to use the glands as a source of food and water, and may provide some defence for the plant against herbivorous insects. Like other desert wash trees in family Fabaceae, A. greggii is frequently afflicted with desert mistletoe, Phoradendron californicum. Unlike other legumes, A. greggii is not known to form root nodule associations with nitrogen-fixing bacteria. In biology, mutualism is an interaction between two species in which both species derive benefit. ... Subfamilies Faboideae Caesalpinioideae Mimosoideae References GRIN-CA 2002-09-01 The name Fabaceae belongs to either of two families, depending on viewpoint. ...

Devil's claw may be an example of an evolutionary anachronism, in which the range and renewal of the species is limited due to the extinction of the mammallian megafauna responsible for seed dispersal.^[1] Within this model, the scarification required to germinate the seeds would have occurred during the chewing and digestion of the fruit by a large mammal, who later passes the seed intact some distance from the original tree. Look up Anachronism in Wiktionary, the free dictionary. ... Megafauna are generally defined as animals that weigh over 500 kg to 1 tonne, i. ...

Ethnobotany

A. greggii beans were gathered and eaten by desert tribes, including the Chemehuevis of the Southern Paiute, and stems were used in construction and tool making. Some sources also suggest that the plant was used as a laxative. Paiute (sometimes written as Piute) refers to two related groups -- Northern Paiute and Southern Paiute --of Native Americans speaking languages belonging to the Numic branch of the Uto-Aztecan family of Native American languages. ...

The patronym "greggii" refers to Josiah Gregg, author, explorer, and amateur naturalist of the American Southwest and northern Mexico. A patronymic is a personal name based on the name of ones father. ... Josiah Gregg (19 July 1806 - 25 February 1850) was a merchant, explorer, naturalist, and author of the American Southwest and Northern Mexico. ...

References

• Jepson Manual Treatment: Acacia greggii
• U.S. Forest Service FEIS Database: Acacia greggii
• Lawor, Elizabeth Jane (1995). Archaeological Site-formation Processes Affecting Plant Remains in the Mojave Desert.. University of California, Riverside.

1. ^ Barlow, C. (2000). The Ghosts of Evolution: Nonsensical fruit, missing partners and other echological anachronisms. Basic Books:NY.