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Matthews, Robin F. 2000. Pleuraphis rigida. In: Fire Effects Information System, [Online].
U.S. Department of Agriculture, Forest Service,
Rocky Mountain Research Station, Fire Sciences Laboratory (Producer).
No special status
FRES30 Desert shrub
FRES40 Desert grasslands
|Small nongame birds||fair|
|Upland game birds||fair|
Nutritional composition (%) of big galleta from the Harquahala Mountains, Arizona, was :
Big galleta provides fair cover for small mammals and small nongame birds in Utah .
Big galleta is a native perennial grass. It is highly branched at the base, giving it a bush-like appearance. The coarse, rigid culms are erect or decumbent and reach 12 to 40 inches (30-100 cm) in height [11,20,21,27]. Big galleta's clumped growth form is a result of the tillers [36,37] or short rhizomes it produces [11,37,46].
Big galleta is reported to be more effective than many other desert plants at extracting water from the soil during dry periods [15,16,18]. Its root system tends to be shallow and extends radially from the base of the plant. Mean root depths of big galleta plants at sites in the Sonoran Desert ranged from 3 to 4 inches (8-10 cm) [10,15,37].
Big galleta primarily reproduces by rhizomes , and most likely by tillering as well.
Little information is available on germination characteristics of big galleta. Seed production is generally very poor  and seedling establishment appears to be rare .
Big galleta is found on dry, open, sandy to rocky slopes and flats, on sand dunes, and in bajadas, scrublands, woodlands, and desert areas [20,21,27,46]. Big galleta occurs on all soil textures, but displays poor growth on clays .
Big galleta is reported to be the most drought tolerant of the Pleuraphis species and is well adapted to desertscrub communities . It is widely distributed on sand dunes throughout the lower Colorado River Valley of the Sonoran Desert and in some Mohave Desert communities [50,51]. In Arizona, big galleta reaches best development in depressions and on heavy alluvial soils below 4,000 feet (1200 m) . Big galleta is generally found below 4,800 feet (1600 m) in California  and below 3,600 feet (1220 m) in Utah .
Big galleta colonizes sand dunes and disturbed sandy areas throughout the Sonoran and Mohave deserts [9,32,36,51].
An apparent symbiotic relationship exists between big galleta and cholla cacti (Opuntia spp.) in the Mohave Desert. Big galleta acts as a nurse plant to cholla seedlings while juvenile cholla offer big galleta protection from herbivores. However, cholla plants larger than 27.5 inches (70 cm) eventually shade big galleta out . Big galleta also apparently acts as a nurse plant to California barrel cactus (Ferocactus cylindraceus) and desert agave (Agave deserti) on Sonoran Desert sites [15,16].
Big galleta was not found on young (5-year-old) debris flow terraces in the Grand Canyon, but was present on 28-year-old and 240-year-old sites .
Big galleta generally undergoes 2 major growth periods, coinciding with the typical bimodal rainfall patterns within its area of distribution . It also can complete its life cycle rapidly in response to periodic rains. In 1 California study following an August 11th rainfall, big galleta flowered by August 30th and dispersed seed by September 15th . Big galleta typically flowers from February through June in the Mohave Desert , and from February through September in Arizona .
Little information is available on big galleta's response or adaptations to fire. However, other species of the Pleuraphis genus have been studied. Following fire, galleta sprouts from rhizomes  and tobosa grass (P. mutica) sprouts from rhizomes and the basal root crown [6,34].
In the Mohave Desert, big galleta communities generally have fuels too sparse to carry fire. However, fire may occur in big galleta swales where density of the grass is great enough to support the spread of fire .
Fire regimes for plant communities in which big galleta occurs are summarized below. Find further fire regime information for the plant communities in which this species may occur by entering the species name in the FEIS home page under "Find Fire Regimes".
|Community Dominant||Range of Fire Return Interval|
|Pinus edulis||10-49 years |
|P. cembroides||20-70 years [33,48]|
|Cercocarpus ledifolius*||10-1,350 350 years [1,43]|
Rhizomatous herb, rhizome in soil
Damage to big galleta from fire varies, depending on whether big galleta is dormant when burned. If big galleta is dry, damage may be severe. However, when plants are green, fire will tend to be less severe and damage may be minimal, with big galleta recovering quickly .
Fire most likely top-kills big galleta. Like tobosa grass and galleta, big galleta also probably sprouts from rhizomes following fire. Big galleta was present in the 1st growing season following fires in creosotebush communities of the western Sonoran desert in California .
Response to fire of the other Pleuraphis species previously mentioned has been documented. Tobosa grass is tolerant of fire and has been reported to regain or exceed prefire coverage within 1 to 3 years following fire if annual precipitation is average or higher [6,55,56]. Galleta is reported to regain prefire coverage within 2 years following fire , although following a winter burn with adequate soil moisture, it yielded only 75% as much forage in the 1st postfire growing period as the unburned control . Both grasses were found to decrease after fire if burned in years of below average precipitation [13,35,55,56].
The likelihood of damage to big galleta from fire most likely increases if plants are burned during dormancy , or in years of below average precipitation.
1. Arno, Stephen F.; Wilson, Andrew E. 1986. Dating past fires in curlleaf mountain-mahogany communities. Journal of Range Management. 39(3): 241-243. 
2. Banner, Roger E. 1992. Vegetation types of Utah. Journal of Range Management. 14(2): 109-114. 
3. Bernard, Stephen R.; Brown, Kenneth F. 1977. Distribution of mammals, reptiles, and amphibians by BLM physiographic regions and A.W. Kuchler's associations for the eleven western states. Tech. Note 301. Denver, CO: U.S. Department of the Interior, Bureau of Land Management. 169 p. 
4. Bowers, Janice E.; Webb, Robert H.; Pierson, Elizabeth A. 1997. Succession of desert plants on debris flow terraces, Grand Canyon, Arizona, U.S.A. Journal of Arid Environments. 36(1): 67-86. 
5. Bradley, W. G. 1965. A study of the blackbrush plant community of the Desert Game Range. Transactions, Desert Bighorn Council. 11: 56-61. 
6. Britton, Carlton M.; Wright, Henry A.; Dahl, Bill E.; Ueckert, Darrell N. 1987. Management of tobosagrass rangeland with prescribed fire. Management Note 12. Lubbock, TX: Texas Tech University, College of Agricultural Sciences, Department of Range and Wildlife Management. 5 p. 
7. Brown, David E.; Minnich, Richard A. 1986. Fire and changes in creosote bush scrub of the western Sonoran Desert, California. The American Midland Naturalist. 116(2): 411-422. 
8. Brown, James K.; Smith, Jane Kapler, eds. [In press]. Wildland fire in ecosystems: effects of fire on flora. Gen. Tech. Rep. RMRS-GTR-42-vol. 2. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 
9. Burk, Jack H. 1977. Sonoran Desert. In: Barbour, M. G.; Major, J., eds. Terrestrial vegetation of California. New York: John Wiley and Sons: 869-899. 
10. Cody, Martin L. 1993. Do cholla cacti (Opuntia spp., subgenus Cylindropuntia) use or need nurse plants in the Mojave Desert? Journal of Arid Environments. 24: 139-154. 
11. Cronquist, Arthur; Holmgren, Arthur H.; Holmgren, Noel H.; [and others]. 1977. Intermountain flora: Vascular plants of the Intermountain West, U.S.A. Vol. 6. The Monocotyledons. New York: Columbia University Press. 584 p. 
12. Dittberner, Phillip L.; Olson, Michael R. 1983. The plant information network (PIN) data base: Colorado, Montana, North Dakota, Utah, and Wyoming. FWS/OBS-83/86. Washington, DC: U.S. Department of the Interior, Fish and Wildlife Service. 786 p. 
13. Dwyer, Don D.; Pieper, Rex D. 1967. Fire effects on blue grama--pinyon-juniper rangeland in New Mexico. Journal of Range Management. 20: 359-362. 
14. Eyre, F. H., ed. 1980. Forest cover types of the United States and Canada. Washington, DC: Society of American Foresters. 148 p. 
15. Franco, A. C.; Nobel, P. S. 1989. Effect of nurse plants on the microhabit and growth of cacti. Journal of Ecology. 77: 870-886. 
16. Franco, Augusto C.; Nobel, Park S. 1988. Interactions between seedlings of Agave deserti and the nurse plant Hilaria rigida. Ecology. 69(6): 1731-1740. 
17. Garrison, George A.; Bjugstad, Ardell J.; Duncan, Don A.; [and others]. 1977. Vegetation and environmental features of forest and range ecosystems. Agric. Handb. 475. Washington, DC: U.S. Department of Agriculture, Forest Service. 68 p. 
18. Grubb, Peter J. 1992. A positive distrust in simplicity--lessons from plant defences and from competition among plants and among animals. Journal of Ecology. 80: 585-610. 
19. Heizer, Richard B.; Hassell, Wendell G. 1985. Improvement of the gramas and other shortgrass prairie species. In: Carlson, Jack R.; McArthur, E. Durant, chairmen. Range plant improvement in western North America: Proceedings of a symposium at the annual meeting of the Society for Range Management; 1985 February 14; Salt Lake City, UT. Denver, CO: Society for Range Management: 63-69. 
20. Hickman, James C., ed. 1993. The Jepson manual: Higher plants of California. Berkeley, CA: University of California Press. 1400 p. 
21. Hitchcock, A. S. 1951. Manual of the grasses of the United States. Misc. Publ. No. 200. Washington, DC: U.S. Department of Agriculture, Agricultural Research Administration. 1051 p. [2nd edition revised by Agnes Chase in two volumes. New York: Dover Publications, Inc.]. 
22. Hughes, Lee E. 1982. A grazing system in the Mohave Desert. Rangelands. 4(6): 256-257. 
23. Humphrey, Robert R. 1974. Fire in the deserts and desert grassland of North America. In: Kozlowski, T. T.; Ahlgren, C. E., eds. Fire and ecosystems. New York: Academic Press: 365-400. 
24. Jameson, Donald A. 1962. Effects of burning on a galleta-black grama range invaded by juniper. Ecology. 43(4): 760-763. 
25. Jones, Stanley D.; Wipff, Joseph K.; Montgomery, Paul M. 1997. Vascular plants of Texas. Austin, TX: University of Texas Press. 404 p. 
26. Kartesz, John T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. Volume I--checklist. 2nd ed. Portland, OR: Timber Press. 622 p. 
27. Kearney, Thomas H.; Peebles, Robert H.; Howell, John Thomas; McClintock, Elizabeth. 1960. Arizona flora. 2d ed. Berkeley, CA: University of California Press. 1085 p. 
28. Krausman, Paul R.; Kuenzi, Amy J.; Etchberger, Richard C.; [and others]. 1997. Diets of mule deer. Journal of Range Management. 50(5): 513-522. 
29. Krausman, Paul R.; Leopold, Bruce D. 1986. Habitat components for desert bighorn sheep in the Harquahala Mountains, Arizona. Journal of Wildlife Management. 50(3): 504-508. 
30. Kuchler, A. W. 1964. United States [Potential natural vegetation of the conterminous United States]. Special Publication No. 36. New York: American Geographical Society. 1:3,168,000; colored. 
31. MacMahon, James A. 1988. Warm deserts. In: Barbour, Michael G.; Billings, William Dwight, eds. North American terrestrial vegetation. Cambridge; New York: Cambridge University Press: 231-264. 
32. McAuliffe, Joseph R. 1988. Markovian dynamics of simple and complex desert plant communities. The American Naturalist. 131(4): 459-490. 
33. Moir, William H. 1982. A fire history of the high Chisos, Big Bend National Park, Texas. The Southwestern Naturalist. 27(1): 87-98. 
34. Neuenschwander, Leon F.; Wright, Henry A. 1984. Edaphic and microclimate factors affecting tobosagrass regrowth after fire. Journal of Range Management. 37(2): 116-121. 
35. Neuenschwander, Leon F.; Wright, Henry A.; Bunting, Stephen C. 1978. The effect of fire on a tobosagrass-mesquite community in the Rolling Plains of Texas. The Southwestern Naturalist. 23(3): 315-337. 
36. Nobel, Park S. 1980. Water vapor conductance and CO2 uptake for leaves of a C4 desert grass, Hilaria rigida. Ecology. 61(2): 252-258. 
37. Nobel, Park S. 1981. Spacing and transpiration of various sized clumps of a desert grass, Hilaria rigida. Journal of Ecology. 69: 735-742. 
38. Paysen, Timothy E.; Derby, Jeanine A.; Black, Hugh, Jr.; [and others]. 1980. A vegetation classification system applied to southern California. Gen. Tech. Rep. PSW-45. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 33 p. 
39. Raunkiaer, C. 1934. The life forms of plants and statistical plant geography. Oxford: Clarendon Press. 632 p. 
40. Reeder, John R. 1977. Chromosome numbers in western grasses. American Journal of Botany. 64(1): 102-110. 
41. Robberecht, Ronald. 1988. Big galleta grass--a warm-season bunchgrass in the Sonoran and Mojave Deserts. Rangelands. 10(2): 58-60. 
42. Sampson, Arthur W.; Chase, Agnes; Hedrick, Donald W. 1951. California grasslands and range forage grasses. Bull. 724. Berkeley, CA: University of California College of Agriculture, California Agricultural Experiment Station. 125 p. 
43. Schultz, Brad W. 1987. Ecology of curlleaf mountain mahogany (Cercocarpus ledifolius) in western and central Nevada: population structure and dynamics. Reno, NV: University of Nevada. 111 p. Thesis. 
44. Seegmiller, Rick F.; Krausman, Paul R.; Brown, William H.; Whiting, Frank M. 1990. Nutritional composition of desert bighorn sheep forage in the Harquahala Mountains, Arizona. Desert Plants. 10(2): 87-90. 
45. Shiflet, Thomas N., ed. 1994. Rangeland cover types of the United States. Denver, CO: Society for Range Management. 152 p. 
46. Sohns, Ernest R. 1956. The genus Hilaria (Gramineae). Journal of the Washington Academy of Sciences. 46(10): 311-321. 
47. Stickney, Peter F. 1989. Seral origin of species originating in northern Rocky Mountain forests. Unpublished draft on file at: U.S. Department of Agriculture, Forest Service, Intermountain Research Station, Fire Sciences Laboratory, Missoula, MT; RWU 4403 files. 10 p. 
48. Swetnam, Thomas W.; Baisan, Christopher H.; Brown, Peter M.; Caprio, Anthony C. 1989. Fire history of Rhyolite Canyon, Chiricahua National Monument. Tech. Rep. No. 32. Tucson, AZ: University of Arizona, School of Renewable Natural Resources, Cooperative National Park Resources Studies Unit. 47 p. 
49. Thorne, Robert F.; Prigge, Barry A.; Henrickson, James. 1981. A flora of the higher ranges and the Kelso Dunes of the eastern Mojave Desert in California. Aliso. 10(1): 71-186. 
50. Turner, Raymond M. 1982. Mohave desertscrub. In: Brown, David E., ed. Biotic communities of the American Southwest--United States and Mexico. Desert Plants. 4(1-4): 157-168. 
51. Turner, Raymond M.; Brown, David E. 1982. Sonoran desertscrub. In: Brown, David E., ed. Biotic communities of the American Southwest--United States and Mexico. Desert Plants. 4(1-4): 181-221. 
52. U.S. Department of Agriculture, Soil Conservation Service. 1994. Plants of the U.S.--alphabetical listing. Washington, DC: U.S. Department of Agriculture, Soil Conservation Service. 954 p. 
53. Weber, William A. 1987. Colorado flora: western slope. Boulder, CO: Colorado Associated University Press. 530 p. 
54. Welsh, Stanley L.; Atwood, N. Duane; Goodrich, Sherel; Higgins, Larry C., eds. 1987. A Utah flora. The Great Basin Naturalist Memoir No. 9. Provo, UT: Brigham Young University. 894 p. 
55. Wright, Henry A. 1980. The role and use of fire in the semidesert grass-shrub type. Gen. Tech. Rep. INT-85. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 24 p. 
56. Wright, Henry A.; Bailey, Arthur W. 1982. Fire ecology: United States and southern Canada. New York: John Wiley & Sons. 501 p.