Introductory
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



ABBREVIATION : 
LATBIJ

SYNONYMS : 
NO-ENTRY


SCS PLANT CODE : 
   LIBI2


COMMON NAMES : 
   pinewoods sweetpea


TAXONOMY : 
The currently accepted scientific name of pinewoods sweetpea is Lathyrus
bijugatus White [5].


LIFE FORM : 
Forb

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 
Pinewoods sweetpea is a regional endemic [8].


COMPILED BY AND DATE : 
Tara Y. Williams, October 1990


LAST REVISED BY AND DATE : 



AUTHORSHIP AND CITATION : 
Williams, Tara Y. 1990. Lathyrus bijugatus. In: Remainder of Citation

DISTRIBUTION AND OCCURRENCE
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



GENERAL DISTRIBUTION : 
Pinewoods sweetpea is found in eastern Washington and Idaho.  It is a
regional endemic in Montana [5,8].

Occurrence in Glacier National Park:  along Inside Road 1.5 miles south
of Logging Lake Ranger Station [7].


ECOSYSTEMS : 
   FRES21  Ponderosa pine


STATES : 
     ID  MT  WA


ADMINISTRATIVE UNITS : 
     GLAC


BLM PHYSIOGRAPHIC REGIONS : 
   8  Northern Rocky Mountains


KUCHLER PLANT ASSOCIATIONS : 
   K005  Mixed conifer forest
   K011  Western ponderosa forest


SAF COVER TYPES : 
   237  Interior ponderosa pine


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
NO-ENTRY

VALUE AND USE
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



WOOD PRODUCTS VALUE : 
NO-ENTRY


IMPORTANCE TO LIVESTOCK AND WILDLIFE : 
NO-ENTRY


PALATABILITY : 
NO-ENTRY


NUTRITIONAL VALUE : 
NO-ENTRY


COVER VALUE : 
NO-ENTRY


VALUE FOR REHABILITATION OF DISTURBED SITES : 
NO-ENTRY


OTHER USES AND VALUES : 
NO-ENTRY


MANAGEMENT CONSIDERATIONS : 
Pinewoods sweetpea should be protected from damage due to road
maintenance in Glacier National Park [7].

Pinewoods sweetpea is a poisonous plant [2].

BOTANICAL AND ECOLOGICAL CHARACTERISTICS
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



GENERAL BOTANICAL CHARACTERISTICS : 
Pinewoods sweetpea is a native perennial legume.  It has slender
rhizomes and grows 8 to 12 inches (10-13 cm) tall.  The leaflets are 1
to 6 inches (2-15 cm) long; the tendrils are bristlelike.  The
bluish-pink flowers are approximately 0.5 inch (10-13 mm) across.  The
pod is 1 to 1.5 inches (3-4 cm) long and contains 7 to 12 seeds [5].
Pinewoods sweetpea is a nitrogen fixer [2].


RAUNKIAER LIFE FORM : 
   Hemicryptophyte


REGENERATION PROCESSES : 
Pinewoods sweetpea reproduces by both sexual and vegetative means [2].


SITE CHARACTERISTICS : 
Pinewoods sweetpea grows in open ponderosa pine (Pinus
ponderosa)-western larch (Larix occidentalis) forests at low elevations
in foothills and open parks under trees [5,7].


SUCCESSIONAL STATUS : 
NO-ENTRY


SEASONAL DEVELOPMENT : 
Pinewoods sweetpea flowers from May through July [5].

FIRE ECOLOGY
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



FIRE ECOLOGY OR ADAPTATIONS : 
NO-ENTRY


POSTFIRE REGENERATION STRATEGY : 
NO-ENTRY

FIRE EFFECTS
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



IMMEDIATE FIRE EFFECT ON PLANT : 
NO-ENTRY


DISCUSSION AND QUALIFICATION OF FIRE EFFECT : 
NO-ENTRY


PLANT RESPONSE TO FIRE : 
NO-ENTRY


DISCUSSION AND QUALIFICATION OF PLANT RESPONSE : 
NO-ENTRY


FIRE MANAGEMENT CONSIDERATIONS : 
NO-ENTRY

REFERENCES
SPECIES: Lathyrus bijugatus | Pinewoods Sweetpea 



REFERENCES : 

 .  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]

 .  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.  [806]

 .  Eyre, F. H., ed. 1980. Forest cover types of the United States and
       Canada. Washington, DC: Society of American Foresters. 148 p.  [905]

 .  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.  [998]

 .  Hitchcock, C. Leo; Cronquist, Arthur. 1961. Vascular plants of the
       Pacific Northwest. Part 3: Saxifragaceae to Ericaceae. Seattle, WA:
       University of Washington Press. 614 p.  [1167]

 .  Kuchler, A. W. 1964. Manual to accompany the map of potential vegetation
       of the conterminous United States. Special Publication No. 36. New York:
       American Geographical Society. 77 p.  [1384]

 .  Lesica, Peter. 1984. Rare vascular plants of Glacier National Park,
       Montana. Missoula, MT: University of Montana, Department of Botany. 27
       p.  [12049]

 .  Lesica, P.; Moore, G.; Peterson, K. M.; Rumely, J. H. (Montana Rare
       Plant Project). 1984. Vascular plants of limited distribution in
       Montana. Monograph No. 2. Montana Academy of Sciences, Supplement to the
       Proceedings, Volume 43. Bozman, MT: Montana State University, Montana
       Academy of Sciences. 61 p.  [11656]

 .  Raunkiaer, C. 1934. The life forms of plants and statistical plant
       geography. Oxford: Clarendon Press. 632 p.  [2843]

.  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]

Related categories for Species: Lathyrus bijugatus | Pinewoods Sweetpea