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Carnegiea gigantea (Engelm. ) Britton & Rose
SAGUARO
Cereus giganteus

Life   Plantae   Dicotyledoneae   Cactaceae   Carnegiea

Carnegiea gigantea
© Copyright Bobby Hattaway 2011 · 5
Carnegiea gigantea

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Carnegiea gigantea, Flower
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea, Flower
Carnegiea gigantea, whole plant - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea, whole plant - unspecified

Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea
Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea

Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea
Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea

Carnegiea gigantea, whole plant - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea, whole plant - unspecified
Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea

Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea
Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea

Carnegiea gigantea, whole plant - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea, whole plant - unspecified
Carnegiea gigantea, whole plant - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea, whole plant - unspecified

Carnegiea gigantea
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea
Carnegiea gigantea, whole plant - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Carnegiea gigantea, whole plant - unspecified

Associates · map
FamilyScientific name @ source (records)
Agaricaceae  Coprinus papagoensis @ BPI (1)
Andrenidae  Perdita michelbacheri @ UCRC_ENT (6)

Perdita obliqua @ UCRC_ENT (1)

Perdita polytropica @ UCRC_ENT (23)
Nidulariaceae  Nidularia griseolazulina @ BPI (1)
Polyporaceae  Poria carnegiae @ BPI (4)

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&pull 20q v5.145 20180528: Error 301 Moved Permanently http://www.blueplanetbiomes.org/saguaro_cactus.htm

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http://plants.usda.gov/java/profile?symbol=CAGI10 ---> https://plants.usda.gov/java/profile?symbol=CAGI10
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You are here: Home / Plant Profile

Carnegiea gigantea (Engelm.) Britton & Rose
saguaro

Image of Carnegiea gigantea

General Information
Symbol: CAGI10
Group: Dicot
Family: Cactaceae
Duration: Perennial
Growth Habit : Tree
Native Status : L48   N
Carnegia gigantea Plant Guide (pdf) (doc)
Data Source and Documentation
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Carnegiea thumbnails at the Plants Gallery

©Gary A. Monroe. United States, AZ, Maricopa Co. Usage Requirements .

Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory . Austria, Vienna. Usage Requirements .

L.A. Barrett. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ, Tuscon. 1904. Usage Requirements .

B.A. Hendricks. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ, Tonto National Forest, Pine Creek. 1935. Usage Requirements .

Rex King. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ, Tonto National Forest. 1937. Usage Requirements .

Rex King. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ, Tonto National Forest. 1939. Usage Requirements .

Elbert L. Little. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ. 1936. Usage Requirements .

G.A. Pearson. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ. 1937. Usage Requirements .

A.F. Potter. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ, Papago Indian Reservation. 1902. Usage Requirements .

Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ. Usage Requirements .

Provided by National Agricultural Library . Originally from USDA Forest Service . United States, AZ, Coronado National Forest. Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name Other Common Names
CAGI7 Carnegia gigantea (Engelm.) Britton & Rose, orth. var. saguaro
CEGI Cereus giganteus Engelm.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Caryophyllidae
Order Caryophyllales
Family Cactaceae – Cactus family
Genus Carnegiea Britton & Rose – saguaro
Species Carnegiea gigantea (Engelm.) Britton & Rose – saguaro

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
Arizona Carnegia gigantea
"crested" or "fantop" form only, saguaro Highly Safeguarded, Salvage restricted

Wetland Status

Interpreting Wetland Status

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (CAGI10)
CalPhotos (CAGI10)
Flora of North America (CAGI10)
Integrated Taxonomic Information System (CAGI10)
Integrated Taxonomic Information System (CAGI7)
Integrated Taxonomic Information System (CEGI)
Jepson Interchange (University of California - Berkeley) (CAGI10)
Lady Bird Johnson Wildflower Center Native Plant Information Network (CAGI10)
Native American Ethnobotany (University of Michigan - Dearborn) (CAGI10)
USDA Forest Service Fire Effects Information System (CAGI10)
Related Websites
Lady Bird Johnson Wildflower Center (CAGI7)
TN-Vanderbilt University (CAGI7)
USDI NPS Saguaro National Park (CAGI7)
www.cactusweb.us (CAGI7)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds
Martin Minor Low Minor

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds
Martin High

Sources

Martin, A.C., H.S. Zim, and A.L. Nelson. 1951. American wildlife and plants: A guide to wildlife food habits . Dover Publications. New York.

Description of Values

Value Class Food Cover
High Average 25-50% of diet Regular source of cover
Low 5-10% of diet Infrequently used as cover
Minor 2-5% of diet Sparsely used as cover
Moderate Average 10-25% of diet Occasional source of cover


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FNA | Family List | FNA Vol. 4 | Cactaceae | Carnegiea

1. Carnegiea gigantea (Engelmann) Britton & Rose, J. New York Bot. Gard. 9: 188. 1908.

Saguaro, giant cactus

Cereus giganteus Engelmann, Amer. J. Sci. Arts, ser. 2, 14: 336. 1852; Pilocereus giganteus (Engelmann) Rümpler

Stems 25+ cm diam., widest where proximal branches arise; pith 10+ cm diam. Flowers usually ter-minal, 6.5-8.5 cm diam.; scales on flower tubes broadly triangular to rounded, green with red apices; ovary with locule to 25 mm; filaments white, short; anthers tan. Seeds: testa thin. 2 n = 22.

Flowering early May-late Jun. Sonoran desert scrub; 180-1400 m; Ariz., Calif.; Mexico (Sonora).

In its habitat Carnegiea gigantea , the saguaro (also spelled sahuaro), is the most conspicuous and most-studied of all North American cacti. It is the tallest cactus of the flora---indeed, these are the tallest trees of the deserts in the United States.

Its flowers, which open two hours after sunset (R. S. Felger and A D. Zimmerman 2000; J. N. Holland, pers. comm.), are visited at night and during daylight by a variety of potential pollinators, including birds, Leptonycteris bats, and native and introduced insects, which together contribute to high fruit set (T. H. Fleming 1996, 2001). Saguaro fruits and seeds are important food for wildlife. Woodpeckers and small owls nest in the stems. Scar tissue that forms around nest cavities excavated in saguaro stems is later encountered among the remains of a dead saguaro as a hard, brown shell known as a "saguaro boot" because of its shape.

Careless or distant observations of the dehisced bright red fruits are responsible for yearly, erroneous reports of "red-flowered saguaros." The pulp of the tasty fruits is edible, and for centuries the fruits, available during midsummer, have been harvested by Native Americans as a dependable, annual, indigenous food from which to make wine and jam and obtain seeds (J. G. Bruhn 1971; F. S. Crosswhite 1980; R. S. Felger and M. B. Moser 1985; E. F. Anderson 2001).

The discrete rods of wood (A. C. Gibson 1978), also called "saguaro-ribs," may persist for years after the death and decomposition of the softer parts of a saguaro. The rods have been used for building materials and to harvest the saguaro fruits (S. Cheatham et al. 1995).

Carnegiea is generally treated as a monotypic genus that shares distant phylogenetic relationships with Mexican species of Neobuxbaumia and Pachycereus , with which it shares alkaloid chemistry (A. C. Gibson and K. E. Horak 1978; A. C. Gibson et al. 1986). Studies using chloroplast DNA sequences currently support that treatment (R. S. Wallace and A. C. Gibson 2002), although sampling of all species in that lineage of columnar cacti must be performed to determine whether any other species should be included in the genus Carnegiea .

Carnegiea gigantea does not occur at sites where soils are saline or subjected to flooding or long periods of freezing .

The saguaro is the state flower of Arizona.

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