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GRACEFUL ARROWGRASS W 



( Triqlochin concinnum var. debile ) 



A. CLASSIFICATION 



1. FAMILY: Arrow Grass Family ( Juncaginaceae) 



2. GENUS: Triqlochin refers to the three-pointed fruit of 

 other members in the genus (G. treis - three; G. glochis - 

 point) . 



3. SPECIES: The origin of the species epithet is obscure. The 

 variety name means weak (L. debil - weak) , the reference 

 undetermined. 



B. PRESENT LEGAL OR OTHER FORMAL STATUS 



1. FEDERAL STATUS 



a. U.S. FISH AND WILDLIFE SERVICE: none 



b. BUREAU OF LAND MANAGEMENT: none 



2. STATE: At the time this project was initiated, Graceful 

 arrowgrass had a state rank of "SI", indicating it to be 

 critically imperiled with typically fewer than six known 

 occurrences in the state. As a result of the 1993 

 fieldwork, its state rank was reassigned as "S2", indicating 

 it to be imperiled with typically between 6-20 known 

 occurrences. As a result of two 1994 field studies, its 

 state rank was reassigned as "S4", indicating it to be 

 potentially secure, and known or expected to have over 100 

 occurrences in the state or otherwise insusceptible to 

 disturbance. It was dropped from tracking as a state 

 species of special concern in 1994. 



C. DESCRIPTION 



1. GENERAL NONTECHNICAL DESCRIPTION: Graceful arrowgrass is a 

 perennial, grasslike herb with a racemose infloresence on a 

 scape, growing in small tufts from a creeping rootstock. 

 The leaves are all basal, subcylindrical , sheathed at the 

 base, and with a distinctly two-lobed ligule. The scape 

 overtops the leaves and grows 1.5-4 (6) dm. tall, the 

 flowers extending almost half the length of the scape. The 

 fruits have six carpels and stigmas, and have a cylindrical 

 shape (from Hitchcock et al. 1984) . 



