than ssp. parryana. The two subspecies differ in 

 a number of characters: ssp. parryana has narrower 

 spikes with little differentiation in size between 

 the terminal and lateral and much smaller 

 pistillate scales compared to ssp. idahoa. 

 Intermediates between the two subspecies were 

 never observed in sites where both occurred. 

 Subspecies hallii occurs further east than ssp. 

 idahoa. It has spikes like ssp. idahoa but scales 

 like ssp. parryana and may be a of hybrid origin. 



H. LAND OWNERSHIP 



1. BUREAU OF LAND MANAGEMENT: Twenty-four of the 

 recently verified populations of Carex parryana 

 ssp. idahoa occur on lands administered by BLM. 

 These include Basin Creek, Box Spring, Brundage 

 Creek, Cabin Creek, Clover Divide, Coyote Creek, 

 Grassy Lake, Hildreth, Lima Reservoir N, Lima 

 Reservoir SW, Meadow Creek, Mud Lake, Muddy Creek, 

 Porcupine Canyon, Sand Creek, Simpson Creek, 

 Sourdough Creek, Taylor Creek, Upper Blacktail, 

 Upper Deadman, Wolverine Creek, Maclean Creek, 

 Moose Creek, Moosetown S. Some of these are 

 large, and many are contiguous with private land. 

 Additional populations may occur on BLM land in 

 the Centennial Valley and the headwaters of Big 

 Sheep Creek. 



2. U.S. FOREST SERVICE: Therie are four recently 

 verified sites for Carex parryana ssp. idahoa on 

 land administered by USES: Harkness Lakes, 

 Morrison Lake, Coyote Hill and Highland City. 

 Additional populations probably occur on USES 

 lands in the Beaverhead Range and perhaps in the 

 southern Gravelly Range. 



3. STATE OF MONTANA: The Lower Poison Lake and South 

 Fork of Tucker Creek sites are on state land. 



4. PRIVATE: The Kate Creek, Monida and Blacktail 

 Creek sites are on private land. All of these are 

 small populations. Carex parryana ssp. idahoa 

 often occurs in habitats amenable to hay 

 production or adjacent to permanent water sources. 

 These habitats, because of their economic value, 

 are often on private property. Many large 

 population likely occur on private land in the 

 headwaters of Big Sheep Creek and the Centennial 

 Valley. Small populations associated with springs 

 and small streams on private land are likely to be 

 found in the Blacktail Mountains. 



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