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Sphaeralcea grossulariifolia (Hook. & Arn.)
Rydb. subsp. grossulariifolia
Sphaeralcea grossulariifolia (Hook. & Arn.) Rydb. subsp. pedata
(Torr. ex Gray) Kearney
SYNONYMS:
Malvastrum grossulariifolium (Hook. & Arn.) Rydb. [19,63]
LIFE FORM:
Forb-shrub
FEDERAL LEGAL STATUS:
No special status
OTHER STATUS:
Information on state-level protected status of plants in the United States is available at
Plants Database.
Gooseberryleaf globemallow is a perennial forb with an ascending to erect growth form. Plants have few to many hairy stems that emerge from a woody caudex and reach a height of 4 to 43 inches (10-109 cm). Leaves are palmately 3- to 5-lobed, moderately pubescent and 0.5 to 2.6 inches (1.3-5 cm) long and wide. Flowers are solitary or clustered in compound racemes, and petals are 0.3 to 0.9 inch (0.8-2.2 cm) long [8,18,20,26,61,63]. The fruit is a schizocarp with 10 to 20 carpels. Carpels are 2.5 to 4.5 mm long and are dehiscent at the top and indehiscent at the base [5,18,20,63]. In Sphaeralcea grossulariifolia subsp. grossulariifolia carpels are generally 1-seeded while in subsp. pedata carpels are often 2-seeded [26,27]. Seeds are mostly pubescent [8]. A large proportion of the plant biomass in gooseberryleaf globemallow is concentrated below the soil surface in a deep, branched, woody taproot [20]. Plants also have a fibrous root system near the soil surface [53,61]. Plants are short-lived (2-3 years) [8,29].
RAUNKIAER [49] LIFE FORM:Pollination: Several genera of bees pollinate globemallows, including Diadasia, Apis, Agapostemon, Calliopsis, Halictus and Melissodes. Wasps from the genus Ammoplanus are also important pollinators. Self-pollination is rare [42].
Breeding system: No information is available on this topic.
Seed production: There is no quantitative information available on seed production in gooseberryleaf globemallow. Seed production is "moderate" [57]. There are approximately 510,000 seeds per pound [21,48].
Seed dispersal: In gooseberryleaf globemallow the dehiscent section of the carpel opens at maturity. The indehiscent section of the carpel holds the seed until the reticulate wall has disintegrated. This may be an adaptation to ensure that some seeds encounter favorable germination conditions [38,42]. There is no information available on the mechanisms of seed dispersal in gooseberryleaf globemallow.
Seed banking: Gooseberryleaf globemallow seed lies dormant in the soil until sufficient moisture and light stimulate germination [44]. There is no information available on how long seeds may persist under field conditions. In an open, unheated, uncooled warehouse, however, gooseberryleaf globemallow seed can be stored for ~15 years without notable loss of viability [23]. After 15 years germination percentage decreases [24,55]. Mean percentage germination of seed after 2 to 25 years of storage is summarized in the table below.
Germination (%) of gooseberryleaf globemallow seed after storage [24] | ||||||||
Years of storage | 2 | 3 | 4 | 5 | 7 | 10 | 15 | 25 |
Percent germination | 7 | 7 | 6 | 9 | 6 | 7 | 6 | 2 |
Germination: Gooseberryleaf globemallow has a hard seed coat and is difficult to germinate [23,38,61]. Average germination rates are between 50% and 60% [42]. Afterripening for 1 month or stratification for 1 to 3 months is necessary for successful germination [23]. Germination is enhanced by chemical or mechanical scarification [2,38,50,61]. As mechanical scarification time increases, however, the seed may be damaged and germination percentage may decrease. In a germination experiment, average germination was 47.4% after 5 seconds of mechanical scarification, 10.5% after 15 seconds and 8.0% after 25 seconds. If mechanical scarification is used, care is needed to prevent injury to the seed [38].
The optimum germination temperature for gooseberryleaf globemallow seed is 72 °F (22 °C) [2]. Exposing seed to alternating temperatures of 59 °F (15 °C) and 72 °F (22 °C) for 12 hour periods increases germination [38,61]. Seeds germinate equally well in light and in darkness [2,38].
Seedling establishment/growth: Gooseberryleaf globemallow generally produces strong and persistent seedlings [34,57]. Seedling survival is relatively low, however, on arid Utah rangeland [42]. Seedling growth rates in globemallows are "moderately high" [34]. Gooseberryleaf globemallow seedlings may mature by the second growing season [61].
Vegetative regeneration: As of this writing (2007) there are no accounts in the literature of vegetative regeneration in gooseberryleaf globemallow. However, it is likely that gooseberryleaf globemallow sprouts from the caudex after top-kill.
SITE CHARACTERISTICS:Elevation: Gooseberryleaf globemallow occurs between 2,600 and 7,500 feet (800-2,300 m) across its range [4,18,20,26,27,63].
Elevational range of gooseberryleaf globemallow by state or region | |
State | Elevation |
Arizona | 3,000-6,000 feet (900-1,800 m) [27] |
Nevada | 3,100-7,500 feet (940-2,300 m) [4,26] |
Utah | 2,600-7,500 feet (800-2,300 m) [63] |
Intermountain West | 2,600-7,500 feet (800-2,300 m) [20] |
Temperature: Gooseberryleaf globemallow is tolerant of cold winter temperatures [57].
Moisture: Gooseberryleaf globemallow is drought tolerant [13,21,29,57]. It is most common in areas that receive 8 to 12 inches (20-30 cm) of annual precipitation [3,14,21,48]. Gooseberryleaf globemallow relies more on summer precipitation than on groundwater [15]. Plants commonly remain green throughout the summer. Late-summer precipitation results in additional plant growth [3]. Flood tolerance is fair [57].
Soils: Gooseberryleaf globemallow grows
in soil textures ranging from clay to gravel. It grows in alkaline soils and tolerates
moderate salinity [4,42,61]. It is found on volcanic soils throughout its range
[5,18,26].
SUCCESSIONAL STATUS:
Gooseberryleaf globemallow is classified by Stephen and Monsen [56] as a pioneer,
early-seral, and late-seral species. It is moderately shade tolerant but thrives in
full sun in open areas [42,46,48,57,61]. Gooseberryleaf globemallow grows well
on disturbed sites [44,46]. In a pinyon-juniper (Pinus spp.-Juniperus utahensis)
forest in Utah, gooseberryleaf globemallow showed "remarkable" growth in the
second year after tree removal and chaining [44]. Frequency of gooseberryleaf globemallow
was also greater on chained than on unchained sites following a 1996 wildfire in
west-central Utah [36].
SEASONAL DEVELOPMENT:
Growth begins in gooseberryleaf globemallow in early spring. Plants mature between June
and August and green up again in the fall [61]. Seed matures unevenly between June and
August [42,57]. Flowering
times vary and are summarized in the table below.
Gooseberryleaf globemallow flowering date by state/region | |
Location | Flowering date |
Arizona | April to October [27] |
Nevada | April to October [26] |
Utah | May to July [42] |
Great Basin | May to July [61] |
Intermountain West | mid-March to early October [20,57] |
Fire regimes: Fire regimes in communities where gooseberryleaf globemallow occurs vary with location and associated vegetation. Presented below is information on fire regimes in several plant communities where gooseberryleaf globemallow is common.
Sagebrush: Presettlement fire regimes in sagebrush ecosystems varied among sagebrush types and locations. Historic fire return intervals in sagebrush ecosystems were variable, ranging from approximately 20 to 100 years. Most fires were mixed-severity and of small extent, although more widespread fires occurred on some sites [67,68]. Cheatgrass (Bromus tectorum) and medusahead (Taeniatherum caput-medusae), nonnative annual grasses, have altered fire regimes and successional patterns in many sagebrush communities. Fine fuel loads from dry cheatgrass and/or medusahead can support fire return intervals as short as 3 to 6 years [43,66].
Pinyon-juniper woodlands: Fire return intervals in pinyon-juniper woodlands vary greatly, depending upon fine fuel loads and stand density. Livestock grazing in pinyon-juniper tends to increase fire return intervals by reducing fine fuels and increasing woody fuel density (review by [68]). Cheatgrass invasion in some pinyon-juniper communities has greatly decreased fire return intervals [30]. Historical fire return interval for western juniper (Juniperus occidentalis) woodlands is estimated at 10 to 30 years (review by [68]).
Salt-desert shrubland: Historically, a lack of continuous fuels made fire rare to nonexistent in salt-desert shrublands except under unusual circumstances [64,69]. Increased presence of nonnative annual grasses in salt-desert ecosystems has shortened fire return intervals [6,65,69]. Wet years such as those brought by El Niño encourage growth of fine fuels in salt-desert communities. In particular, annual grasses such as cheatgrass and red brome (Bromus rubens) develop enough fine fuel biomass to support wildfires [10,41]. Once fire occurs, cover of annuals and probability of subsequent fire increase [10]. Harper [17] found little to no cheatgrass on saltbush and other desert shrub sites on the Desert Experimental Range of west-central Utah in 1959, a dry year. In 1990, a wet year, Sparks and others [54] found the same sites had converted to cheatgrass and other annual weeds "on a massive scale" and fuels were continuous enough to carry fire. Long recovery periods are needed when large-acreage fires occur in salt-desert shrub [9,10].
Blackbrush: The blackbrush association is composed of dense to scattered low-stature shrubs and dense to open grasses. It maintains the highest plant cover of any desert shrub community. Blackbrush experiences a stand-replacement fire regime, though historical documentation of blackbrush fire cycles is limited. Frequent large fires have eliminated blackbrush from some areas. Blackbrush occurs in areas with approximately 7 inches (180 mm) of annual precipitation. Cyclic desert precipitation above 10 to 14 inches (250-360 mm) may increase biomass and fuel continuity enough to increase fire potential [40].
The following table provides fire regime information that may be relevant to gooseberryleaf globemallow. 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".
Fire regime information on vegetation communities in which gooseberryleaf globemallow may occur. For each community, fire regime characteristics are taken from the LANDFIRE Rapid Assessment Vegetation Models [32]. These vegetation models were developed by local experts using available literature, local data, and/or expert opinion as documented in the PDF file linked from the name of each Potential Natural Vegetation Group listed below. Cells are blank where information is not available in the Rapid Assessment Vegetation Model. | ||||||||||
| ||||||||||
Pacific Northwest | ||||||||||
Vegetation Community (Potential Natural Vegetation Group) | Fire severity* | Fire regime characteristics | ||||||||
Percent of fires | Mean interval (years) |
Minimum interval (years) |
Maximum interval (years) |
|||||||
Northwest Shrubland | ||||||||||
Salt desert scrubland | Replacement | 13% | 200 | 100 | 300 | |||||
Mixed | 87% | 31 | 20 | 100 | ||||||
Salt desert shrub | Replacement | 50% | >1,000 | 500 | >1,000 | |||||
Mixed | 50% | >1,000 | 500 | >1,000 | ||||||
Wyoming big sagebrush semidesert | Replacement | 86% | 200 | 30 | 200 | |||||
Mixed | 9% | >1,000 | 20 | |||||||
Surface or low | 5% | >1,000 | 20 | |||||||
Wyoming sagebrush steppe | Replacement | 89% | 92 | 30 | 120 | |||||
Mixed | 11% | 714 | 120 | |||||||
Low sagebrush | Replacement | 41% | 180 | |||||||
Mixed | 59% | 125 | ||||||||
Mountain big sagebrush (cool sagebrush) | Replacement | 100% | 20 | 10 | 40 | |||||
California | ||||||||||
Vegetation Community (Potential Natural Vegetation Group) | Fire severity* | Fire regime characteristics | ||||||||
Percent of fires | Mean interval (years) |
Minimum interval (years) |
Maximum interval (years) |
|||||||
California Shrubland | ||||||||||
Saltbush | Replacement | 70% | 100 | 60 | 200 | |||||
Mixed | 30% | 235 | 10 | |||||||
California Woodland | ||||||||||
Ponderosa pine | Replacement | 5% | 200 | |||||||
Mixed | 17% | 60 | ||||||||
Surface or low | 78% | 13 | ||||||||
Southwest | ||||||||||
Vegetation Community (Potential Natural Vegetation Group) | Fire severity* | Fire regime characteristics | ||||||||
Percent of fires | Mean interval (years) |
Minimum interval (years) |
Maximum interval (years) |
|||||||
Southwest Grassland | ||||||||||
Desert grassland | Replacement | 85% | 12 | |||||||
Surface or low | 15% | 67 | ||||||||
Desert grassland with shrubs and trees | Replacement | 85% | 12 | |||||||
Mixed | 15% | 70 | ||||||||
Plains mesa grassland | Replacement | 81% | 20 | 3 | 30 | |||||
Mixed | 19% | 85 | 3 | 150 | ||||||
Plains mesa grassland with shrubs or trees | Replacement | 76% | 20 | |||||||
Mixed | 24% | 65 | ||||||||
Southwest Shrubland | ||||||||||
Salt desert scrubland | Replacement | 13% | 200 | 100 | 300 | |||||
Mixed | 87% | 31 | 20 | 100 | ||||||
Desert shrubland without grass | Replacement | 52% | 150 | |||||||
Mixed | 48% | 165 | ||||||||
Southwestern shrub steppe | Replacement | 72% | 14 | 8 | 15 | |||||
Mixed | 13% | 75 | 70 | 80 | ||||||
Surface or low | 15% | 69 | 60 | 100 | ||||||
Southwestern shrub steppe with trees | Replacement | 52% | 17 | 10 | 25 | |||||
Mixed | 22% | 40 | 25 | 50 | ||||||
Surface or low | 25% | 35 | 25 | 100 | ||||||
Low sagebrush shrubland | Replacement | 100% | 125 | 60 | 150 | |||||
Mountain sagebrush (cool sage) | Replacement | 75% | 100 | |||||||
Mixed | 25% | 300 | ||||||||
Mountain-mahogany shrubland | Replacement | 73% | 75 | |||||||
Mixed | 27% | 200 | ||||||||
Southwest Woodland | ||||||||||
Pinyon-juniper (mixed fire regime) | Replacement | 29% | 430 | |||||||
Mixed | 65% | 192 | ||||||||
Surface or low | 6% | >1,000 | ||||||||
Pinyon-juniper (rare replacement fire regime) | Replacement | 76% | 526 | |||||||
Mixed | 20% | >1,000 | ||||||||
Surface or low | 4% | >1,000 | ||||||||
Ponderosa pine/grassland (Southwest) | Replacement | 3% | 300 | |||||||
Surface or low | 97% | 10 | ||||||||
Great Basin | ||||||||||
Vegetation Community (Potential Natural Vegetation Group) | Fire severity* | Fire regime characteristics | ||||||||
Percent of fires | Mean interval (years) |
Minimum interval (years) |
Maximum interval (years) |
|||||||
Great Basin Grassland | ||||||||||
Great Basin grassland | Replacement | 33% | 75 | 40 | 110 | |||||
Mixed | 67% | 37 | 20 | 54 | ||||||
Great Basin Shrubland | ||||||||||
Blackbrush | Replacement | 100% | 833 | 100 | >1,000 | |||||
Salt desert scrubland | Replacement | 13% | 200 | 100 | 300 | |||||
Mixed | 87% | 31 | 20 | 100 | ||||||
Salt desert shrub | Replacement | 50% | >1,000 | 500 | >1,000 | |||||
Mixed | 50% | >1,000 | 500 | >1,000 | ||||||
Basin big sagebrush | Replacement | 80% | 50 | 10 | 100 | |||||
Mixed | 20% | 200 | 50 | 300 | ||||||
Wyoming big sagebrush semidesert | Replacement | 86% | 200 | 30 | 200 | |||||
Mixed | 9% | >1,000 | 20 | >1,000 | ||||||
Surface or low | 5% | >1,000 | 20 | >1,000 | ||||||
Wyoming big sagebrush semidesert with trees | Replacement | 84% | 137 | 30 | 200 | |||||
Mixed | 11% | >1,000 | 20 | >1,000 | ||||||
Surface or low | 5% | >1,000 | 20 | >1,000 | ||||||
Wyoming sagebrush steppe | Replacement | 89% | 92 | 30 | 120 | |||||
Mixed | 11% | 714 | 120 | |||||||
Mountain big sagebrush | Replacement | 100% | 48 | 15 | 100 | |||||
Mountain big sagebrush with conifers | Replacement | 100% | 49 | 15 | 100 | |||||
Mountain sagebrush (cool sage) | Replacement | 75% | 100 | |||||||
Mixed | 25% | 300 | ||||||||
Black and low sagebrushes | Replacement | 33% | 243 | 100 | ||||||
Mixed | 67% | 119 | 75 | 140 | ||||||
Black and low sagebrushes with trees | Replacement | 37% | 227 | 150 | 290 | |||||
Mixed | 63% | 136 | 50 | 190 | ||||||
Great Basin Woodland | ||||||||||
Juniper and pinyon-juniper steppe woodland | Replacement | 20% | 333 | 100 | >1,000 | |||||
Mixed | 31% | 217 | 100 | >1,000 | ||||||
Surface or low | 49% | 135 | 100 | |||||||
Ponderosa pine | Replacement | 5% | 200 | |||||||
Mixed | 17% | 60 | ||||||||
Surface or low | 78% | 13 | ||||||||
Northern Rockies | ||||||||||
Vegetation Community (Potential Natural Vegetation Group) | Fire severity* | Fire regime characteristics | ||||||||
Percent of fires | Mean interval (years) |
Minimum interval (years) |
Maximum interval (years) |
|||||||
Northern Rockies Shrubland | ||||||||||
Salt desert shrub | Replacement | 50% | >1,000 | 500 | >1,000 | |||||
Mixed | 50% | >1,000 | 500 | >1,000 | ||||||
Wyoming big sagebrush | Replacement | 63% | 145 | 80 | 240 | |||||
Mixed | 37% | 250 | ||||||||
Basin big sagebrush | Replacement | 60% | 100 | 10 | 150 | |||||
Mixed | 40% | 150 | ||||||||
Low sagebrush shrubland | Replacement | 100% | 125 | 60 | 150 | |||||
Mountain shrub, nonsagebrush | Replacement | 80% | 100 | 20 | 150 | |||||
Mixed | 20% | 400 | ||||||||
Mountain big sagebrush steppe and shrubland | Replacement | 100% | 70 | 30 | 200 | |||||
*Fire Severities: Replacement=Any fire that causes greater than 75% top removal of a vegetation-fuel type, resulting in general replacement of existing vegetation; may or may not cause a lethal effect on the plants. Mixed=Any fire burning more than 5% of an area that does not qualify as a replacement, surface, or low-severity fire; includes mosaic and other fires that are intermediate in effects. Surface or low=Any fire that causes less than 25% upper layer replacement and/or removal in a vegetation-fuel class but burns 5% or more of the area [16,31]. |
Frequency (number of plots in which species was present) by treatment and year of gooseberryleaf globemallow following a 1996 wildfire [37] | |||
Postfire year 1 | Postfire year 2 | Postfire year 3 | |
Unburned | 2 | 2 | 2 |
Burned | 4 | 3 | 5 |
Gooseberryleaf globemallow increased after burning in a chaparral community on the Tonto National Forest in central Arizona [39]. Abundance of gooseberryleaf globemallow before and after burning is given in the table below.
Abundance (lbs/acre) of gooseberryleaf globemallow before and after burning in Arizona chaparral [39] | ||
Preburn | Postfire year 1 | |
North slopes | 9 | 30 |
South slopes | 10 | 18 |
DISCUSSION AND QUALIFICATION OF PLANT RESPONSE:
No additional information is available on this topic.
FIRE MANAGEMENT CONSIDERATIONS:
Gooseberryleaf globemallow has been shown to persist or increase following
prescribed burning [39].
Because gooseberryleaf globemallow establishes well on disturbed, arid sites
[4,42,46,57,61] and can persist or increase after fire [37,39,42],
it may be valuable in natural revegetation or seeding on burned areas.
Pronghorn eat gooseberryleaf globemallow in western Utah. Gooseberryleaf globemallow comprised, on average, 4.6% of the forage contained in pronghorn rumen samples collected in western Utah over 7 years. It is eaten by pronghorn into late summer and fall when few other forbs are available [3]. Deer, elk and bighorn sheep use of globemallows varies with location and condition of plants [42]. Gooseberryleaf globemallow is also eaten by jackrabbits, rodents, grasshoppers and Mormon crickets [61]. Globemallow seeds are eaten by various species of birds and rabbits [42].
Palatability/nutritional value: Gooseberryleaf globemallow is moderately palatable to livestock and wildlife [21,47,57]. Palatability ratings for gooseberryleaf globemallow forage are none to fair for cattle and fair to excellent for domestic sheep, pronghorn, elk and deer [42,57,61]. It is most palatable to pronghorn when in flower. Crude protein content in gooseberryleaf globemallow plants is relatively high (up to 22% of dry matter) [42]. In-vitro digestibility is 69.7% [62]. Additional nutritional information is provided by Rumbaugh and others [52].
Cover value: In Utah, the cover value of gooseberryleaf globemallow is poor for upland game birds and waterfowl, fair for small non-game birds, and good for small mammals [12].
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4. Beatley, Janice C. 1976. Vascular plants of the Nevada Test Site and central-southern Nevada: ecologic and geographic distributions. [Washington, DC]: U.S. Energy Research and Development Administration, Division of Biomedical and Environmental Research. 308 p. Available from ERDA, Springfield, VA. TID-26881/DAS. [63152]
5. Belcher, Earl. 1985. Handbook on seeds of browse-shrubs and forbs. Tech. Publ. R8-TP8. Atlanta, GA: U.S. Department of Agriculture, Forest Service, Southern Region. 246 p. In cooperation with: Association of Official Seed Analysts. [43463]
6. Billings, W. D. 1994. Ecological impacts of cheatgrass and resultant fire on ecosystems in the western Great Basin. In: Monsen, Stephen B.; Kitchen, Stanley G., comps. Proceedings--ecology and management of annual rangelands; 1992 May 18-22; Boise, ID. Gen. Tech. Rep. INT-GTR-313. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station: 22-30. [24248]
7. Billings, W. E. 1949. The shadscale vegetation zone of Nevada and eastern California in relation to climate and soils. The American Midland Naturalist. 42(1): 87-109. [36960]
8. Blaisdell, James P.; Holmgren, Ralph C. 1984. Managing Intermountain rangelands--salt-desert shrub ranges. Gen. Tech. Rep. INT-163. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 52 p. [464]
9. Brown, James K.; Smith, Jane Kapler, eds. 2000. 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. 257 p. [36581]
10. Bunting, Stephen C.; Kingery, James L.; Hemstrom, Miles A.; Schroeder, Michael A.; Gravenmier, Rebecca A.; Hann, Wendel J. 2002. Altered rangeland ecosystems in the interior Columbia Basin. Gen. Tech. Rep. PNW-GTR-553. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 71 p. (Quigley, Thomas M., ed.; Interior Columbia Basin Ecosystem Project: scientific assessment). [43462]
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16. Hann, Wendel; Havlina, Doug; Shlisky, Ayn; [and others]. 2005. Interagency fire regime condition class guidebook. Version 1.2, [Online]. In: Interagency fire regime condition class website. U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior; The Nature Conservancy; Systems for Environmental Management (Producer). Variously paginated [+ appendices]. Available: http://www.frcc.gov/docs/1.2.2.2/Complete_Guidebook_V1.2.pdf [2007, May 23]. [66734]
17. Harper, Kimball T. 1959. Vegetational changes in a shadscale-winterfat plant association during twenty-three years of controlled grazing. Provo, UT: Brigham Young University. 68 p. Thesis. [45366]
18. Hickman, James C., ed. 1993. The Jepson manual: Higher plants of California. Berkeley, CA: University of California Press. 1400 p. [21992]
19. Hitchcock, C. Leo; Cronquist, Arthur. 1973. Flora of the Pacific Northwest. Seattle, WA: University of Washington Press. 730 p. [1168]
20. Holmgren, Noel H.; Holmgren, Patricia K.; Cronquist, Arthur. 2005. Intermountain flora: Vascular plants of the Intermountain West, U.S.A. Vol. 2, Part B: Subclass Dilleniidae. New York: The New York Botanical Garden. 488 p. [63251]
21. Horton, Howard, ed./comp. 1989. Interagency forage and conservation planting guide for Utah. Extension Circular 433. Logan, UT: Utah State University, Cooperative Extension Service. 67 p. [12231]
22. Hutchings, Selar S.; Stewart, George. 1953. Increasing forage yields and sheep production on Intermountain winter ranges. Circular No. 925. Washington, DC: U.S. Department of Agriculture. 63 p. [1227]
23. Jorgensen, Kent R.; Stevens, Richard. 2004. Seed collection, cleaning, and storage. In: Monsen, Stephen B.; Stevens, Richard; Shaw, Nancy L., comps. Restoring western ranges and wildlands. Gen. Tech. Rep. RMRS-GTR-136-vol. 3. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: 699-716. [42398]
24. Jorgensen, Kent R.; Wilson, G. Richard. 2004. Seed germination. In: Monsen, Stephen B.; Stevens, Richard; Shaw, Nancy L., comps. Restoring western ranges and wildlands. Gen. Tech. Rep. RMRS-GTR-136-vol. 3. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: 723-732. [41906]
25. Kartesz, John T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. 1st ed. In: Kartesz, John T.; Meacham, Christopher A. Synthesis of the North American flora (Windows Version 1.0), [CD-ROM]. Chapel Hill, NC: North Carolina Botanical Garden (Producer). In cooperation with: The Nature Conservancy; U.S. Department of Agriculture, Natural Resources Conservation Service; U.S. Department of the Interior, Fish and Wildlife Service. [36715]
26. Kartesz, John Thomas. 1988. A flora of Nevada. Reno, NV: University of Nevada. 1729 p. [In 2 volumes]. Dissertation. [42426]
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