Index of Species Information

SPECIES:  Agastache cusickii


SPECIES: Agastache cusickii
AUTHORSHIP AND CITATION : Matthews, Robin F. 1993. Agastache cusickii. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: [].

ABBREVIATION : AGACUS SYNONYMS : Agastache cusickii Heller Lophanthus cusickii Greenman SCS PLANT CODE : AGCU COMMON NAMES : Cusick's giant hyssop giant hyssop horse-mint Cusick horse-mint TAXONOMY : The currently accepted scientific name of Cusick's giant hyssop is Agastache cusickii (Greenman) Heller (Lamiaceae). A typical variety and A. c. var. parva Cronquist are recognized [3,4,5,6]. LIFE FORM : Forb FEDERAL LEGAL STATUS : See OTHER STATUS OTHER STATUS : Cusick's giant hyssop is classified as endangered in Montana [8].


SPECIES: Agastache cusickii
GENERAL DISTRIBUTION : Cusick's giant hyssop is found in the Steens Mountains of southeast Oregon; the Santa Rosa, White Pine, and Toiyabe mountains of north and central Nevada; and the Tendoy Mountains in southwest Montana. It is also found in numerous locations in central Idaho [3,4,5]. In addition, populations are reported from other mountain ranges in Nevada [10]. ECOSYSTEMS : FRES29 Sagebrush FRES44 Alpine may occur in other ecosystems but specific information is lacking STATES : ID MT NV OR BLM PHYSIOGRAPHIC REGIONS : 5 Columbia Plateau 6 Upper Basin and Range 8 Northern Rocky Mountains KUCHLER PLANT ASSOCIATIONS : NO-ENTRY SAF COVER TYPES : NO-ENTRY SRM (RANGELAND) COVER TYPES : NO-ENTRY HABITAT TYPES AND PLANT COMMUNITIES : NO-ENTRY


SPECIES: Agastache cusickii


SPECIES: Agastache cusickii
GENERAL BOTANICAL CHARACTERISTICS : Cusick's giant hyssop is a dwarf perennial forb, usually 4 to 8 inches (10-20 cm) tall with a spiked inflorescence. Numerous simple or branched stems arise from a woody taproot and branching caudex. Leaves are mostly 0.4 to 1.0 inch (1-2.5 cm) long and are finely puberulent. The fruits are nutlets [3,4,5]. RAUNKIAER LIFE FORM : Chamaephyte REGENERATION PROCESSES : NO-ENTRY SITE CHARACTERISTICS : Cusick's giant hyssop is found on dry, rocky sites, and often on talus slopes. It occurs at mid- to upper elevations in mountains (7,590 to 10,560 feet [2,300-3,200 m]) [3,4,5]. Mid- to high elevation sites in the Santa Rosa and Toiyabe ranges in Nevada are occupied by scattered limber pine (Pinus flexis) and pinyon-juniper woodlands at the lower elevational limits of Cusick's giant hyssop. On Steens Mountain, Oregon, Cusick's giant hyssop may be associated with western juniper (Juniperus occidentalis), curlleaf mountain-mahogany (Cercocarpus ledifolius), quaking aspen (Populus tremuloides), or high-elevation sagebrush-grasslands [1]. In the Tendoy Mountains, Montana, Cusick's giant hyssop is common on limestone talus with mountain big sagebrush (Artemisia tridentata) and Indian ricegrass (Oryzopsis hymenoides) [7]. SUCCESSIONAL STATUS : NO-ENTRY SEASONAL DEVELOPMENT : Cusick's giant hyssop flowers from June to August [3,5].


SPECIES: Agastache cusickii
FIRE ECOLOGY OR ADAPTATIONS : Cusick's giant hyssop often inhabits talus slopes that are not generally susceptible to fire. It may sprout from the caudex following disturbance. FIRE REGIMES : Find 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". POSTFIRE REGENERATION STRATEGY : Caudex, growing points in soil


SPECIES: Agastache cusickii
IMMEDIATE FIRE EFFECT ON PLANT : Specific information on the effect of fire on Cusick's giant hyssop is not available in the literature. However, aboveground parts of nettleleaf giant hyssop (Agastache urticfolia) were completely consumed by late summer and fall fires in the Great Basin Rate of Spread Study, which was conducted in Nevada [13]. DISCUSSION AND QUALIFICATION OF FIRE EFFECT : NO-ENTRY PLANT RESPONSE TO FIRE : Specific information on the response of Cusick's giant hyssop to fire is not available in the literature. Nettleleaf giant hyssop sprouted in the first postfire year following late summer and fall fires in Nevada [13]. DISCUSSION AND QUALIFICATION OF PLANT RESPONSE : NO-ENTRY FIRE MANAGEMENT CONSIDERATIONS : NO-ENTRY


SPECIES: Agastache cusickii
REFERENCES : 1. Arno, Stephen F.; Hammerly, Ramona P. 1984. Timberline: Mountain and arctic forest frontiers. Seattle, WA: The Mountaineers. 304 p. [339] 2. 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. [434] 3. Cronquist, Arthur; Holmgren, Arthur H.; Holmgren, Noel H.; [and others]. 1984. Intermountain flora: Vascular plants of the Intermountain West, U.S.A. Vol. 4. Subclass Asteridae, (except Asteraceae). New York: The New York Botanical Garden. 573 p. [718] 4. Hitchcock, C. Leo; Cronquist, Arthur. 1973. Flora of the Pacific Northwest. Seattle, WA: University of Washington Press. 730 p. [1168] 5. Hitchcock, C. Leo; Cronquist, Arthur; Ownbey, Marion. 1959. Vascular plants of the Pacific Northwest. Part 4: Ericaceae through Campanulaceae. Seattle, WA: University of Washington Press. 510 p. [1170] 6. Kartesz, John T.; Kartesz, Rosemarie. 1980. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. Volume II: The biota of North America. Chapel Hill, NC: The University of North Carolina Press; in confederation with Anne H. Lindsey and C. Richie Bell, North Carolina Botanical Garden. 500 p. [6954] 7. Lesica, P., et. al. 1986. Noteworthy collections: Montana. Madrono. 33: 310-312. [21744] 8. Lesica, Peter; Shelly, J. Stephen. 1991. Sensitive, threatened and endangered vascular plants of Montana. Occasional Publication No. 1. Helena, MT: Montana Natural Heritage Program. 88 p. [20964] 9. Raunkiaer, C. 1934. The life forms of plants and statistical plant geography. Oxford: Clarendon Press. 632 p. [2843] 10. Schlatterer, Edward F. 1972. A preliminary description of plant communities found on the Sawtooth, White Cloud, Boulder and Pioneer Mountains. Unpublished report. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Region. 111 p. [2076] 11. 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. 7 p. [20090] 12. U.S. Department of Agriculture, Soil Conservation Service. 1982. National list of scientific plant names. Vol. 1. List of plant names. SCS-TP-159. Washington, DC. 416 p. [11573] 13. Range, Phil; Veisze, Paul; Beyer, Cheryl; Zschaechner, Greg. 1982. Great Basin rate-of-spread study: Fire behavior/fire effects. Reno, Nevada: U.S. Department of the Interior, Bureau of Land Management, Nevada State Office, Branch of Protection. 56 p. [1935]