Jungmannia # Sp Nov Plants pleurocarpous through numerous innovations beyond female 1. autoicous,anthridial bracts some little distance below perianth. Plants small,usually under 1 mm long.Leaves frequently subsecund (refer to MacVicar's plate of J atrovirens,fig 1 )but sometimes biplanteate. Leaves broadly ovate,clasping stem,attached much as in Figs 1 -nd 2 under J sphaerocarpa,by MacVicar,concave,usually largest just below perianths, where up to 1.1mm long and 1.05 broad,smaller below.Attached oblique,narrowed at insertion to .3mm:up-to=. The leaves broadest below middle,narrowed above to a rounded apex. Cells,apical averaging 19 u,rather irregular (13-23u) in size,somewhat thick walled,with small trigones. Gradually larger below, at base in centre up to 30 X 18 u,but at margins distinctly smaller and more isodiametric. Surface verruculose. Perianths oblique by continuance of innovations; 1.30 mm long,by .8 mm wide at or about centre,which is swollen to ventricose. Mouth .2 mm wide deePLY plicate,with numerous long cellld crenulations,1-2 cells high,base .3 mm. Rhizoids numerous on stems Type,Canyon Creek,MonTe Vista Dam,Placer Co,California,July 11,1933, In Herb MacFadden