Te Le tenuissimmm (Geyer) Epling & Ewan Nov, Combe Subacaulescent, glabrous, 
stems 2 or 3 from a vertical cylindrical root 2=3 mm, thioks leaves scarious 
and dilated at the base, simply pinnate with five remote linear segments or 
ternate and sub-pinnate, the segments 1-2 mm, wide, 1.5-5 om, long; scapes 
15=25 cm, tall, slender, rays 5-8, 1-7 cme longs flowers yellow, the clusters 
about 4 mn, in diameter, the bracts of the involucels glabrous, lanceolate, 
about equal to the flowers; fruits oval, purplish when young, glabrous, 
10-14 mm, long, 4-5 mm, wide, the wings .7-1 mm, wide, thins oil tubes 
solitary in the intervals, usually 4 (sometimes 2) on the commissural face, 
these very slender, the outer pair usually incomplete, (Peucedanum 
tenuissimum Geyer): 
In the wet swampy small prairies (high cold regions) surrounded by 
high mountains, Coeur d'Alene country, Geyer 302 (type, Brits Muse); Fish 
Lake, 6000 fte, Epling & Houck 9821. Differs from Le ambiguum, which occupies 
a different ecologic position, in its carpel characters, 
