E. MANAGEMENT CONSIDERATIONS 



A. terminalis appears to be a rare species in Montana. Nearly 

 all known populations are subject to livestock grazing; 

 however, the effects of grazing on this species are not known. 

 The population in Limekiln Canyon is in relatively pristine 

 habitat - heavy livestock grazing or other severe disturbances 

 should be avoided in the immediate area of known populations. 

 The species is recommended for sensitive species status by the 

 BLM and for tracking by the state. 



Carex parryana Dewey ssp. idahoa (Bailey) Murray 

 Idaho sedge 



A. DESCRIPTION 



1. General description: This sedge taxon is part of variable 

 species, but is distinguished by having bracts that are longer 

 than their perigynia (the sacs which hold the fruit) . The 

 plants arise from a sparsely branched underground caudex, are 

 diffusely distributed and are nearly impossible to distinguish 

 from surrounding vegetation unless they are flowering. There 

 are usually three spikes with the large terminal spike 

 producing anthers only at the tip or not at all. It is 

 treated by the Montana Natural Heritage Program as a variety 

 rather than a full species in keeping with the most recent 

 taxonomic treatment (Murray 1969) . 



2. Technical description for the subspecies (quoted from 

 Hermann 1970 for C. idahoa, a synonym): 



Loosely cespitose from prolonged scaly, horizontal 

 rootstocks; culms 2-3.5 dm high, much exceeding the 

 leaves, somewhat fibrillose and reddish-brown-tinged at 

 the base, the dried leaves of the previous year 

 conspicuous; leaves 5-10, clustered near the base, the 

 thin blades flat but with more or less revolute margins, 

 2-4 mm wide, long-attenuate, the ventrally very thin, 

 hyaline sheaths concave at the mouth, the ligule about as 

 wide as long; spikes usually three, often all pistillate, 

 linear-oblong to cylindric, erect on short, stiff, and 

 scabrous peduncles, approximate, forming a narrow head 

 3.5-5 cm long, the terminal spike 2-3 cm long, 6-8 mm 

 wide, the lateral 1-2 cm long, 4-6 mm wide, the numerous 

 perigynia appressed-ascending; bracts sheathless, usually 

 not over 1 cm long and much shorter than the spikes; 

 pistilate scales ovate to ovate-lanceolate, long acute to 

 acuminate, brown with a conspicuous lighter center and 

 very narrow hyaline margins, wider and 2-3 times as long 

 as the perigynia; perigynia obovoid, obtusely trigonous, 

 somewhat flattened on one side, 3 mm long, 1.5 mm long, 

 glabrous, puncticulate , two-ribbed but otherwise 



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