Bc 
4, E. hyemale var. californicum Miilde. Tall Scouring-rush, Stout 
W scaberulous-stemmed plants, arising from strong somewhat vertical rootstocks, 
the stems evergreen, erect, often stiff, 0.5-1.0 m, tall, of 1 kind, 8-34 
furrowed, the ridges roughened by 2 indistinct vertical rows of silica 
tubercles, rounded, the furrows shallow, about compensating for the ridges; 
sheaths conspicuous, permanently banded with a dark brown to black zone 
bordered by white, the lower 7-10 mm. long, with)flaring rim, the upper a 
little shorter, subappressed, all but uppermost with teeth early deciduous, 
the teeth ovate-triangular, tipped by 4 short flexuous bristle; strobilus often 
crowning the ordinary herbaceous shoots late in the season, abruptly 
cuspidate, the cusp black, conspicuous, the strobilus always somewhat 
enveloped by the subtending sheathe 
Infrequent in our region, perhaps overlooked, in cottomwood bottomlands. 
Upper Priest Lake, Epling 7724. 
di) 5, E, variegatum Schleich, Low slender tufted plants, with short internodes 
and somewhat renin geniculate nodes provided with black sheaths, arising 
from slender to stout rootstocks, the stems erect or ascending, not stiffish, 
several, noticeably brittle and easily disarticulating, 5-10-furrowed, .finely 
roughened by silica tubercles, the ridges rounded, about compensating for 
the shallow furrows; sheaths all subappressed, the lower 2-4 mm, long, the 
uppermost shorter, blackening distally in age, all permanently tipped with 
lance-acuminate white-margined teeth; strobilus inconspicuous, crowning the 
ordinary herbaceous shoots of summer , narrowly-oblong, bluntish or even 
truncate at maturity, well exserted from sheath, 
Known in our region only from stream banks anc sand bars of Upper Priest 
Re, 3000 ft., Epling 7418. 
