Juncus interior Wiegand × Juncus tenuis Willd.
Annotated by P. F. Zika.

Idaho: Bonner County: Floodplain of Pend Oreille River, 2 air km ESE of Newport Elev. 650 m.
48° 10.4' N, 117° 1' W
Uncertainty: 6 meters. Error radius calculated from georeference precision
sunny damp saline soil at upper edge of marsh, with Juncus dudleyi, J. ensifolius, J. interior, Carex bebbii, C. vulpinoidea, C. retrorsa Cespitose, to 46 cm tall; 0-3 strong stem ridges (more than usual in J. tenuis); ligules 0.6-1.4 mm (longer than usual in J. interior), anthers 0.5 mm (shorter than J. interior); filaments 1.0 mm; partitions concave, fruit 2.5 mm, style 0.2 mm; tepals 3.5 mm, mostly appressed (unlike J. tenuis); seed 0.3-0.35 mm long Phenology: Fertile.

P. F. Zika 23481A, Aug 27, 2007
CIC, Accession: 41804