Jungermannia # sp Nov Plante pleurocarpous through numerous innovations beyond female inflorescence autoicous,anthridial bracts some little distance below perianth. Plants small,usually under 1 cm long.Leaves frequently subsecund (refer to MacVicars plate of J atrovirens,Fig 1 )but sometimes biplanteate. Leaves broadly ovate,clasping stem,attache 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.Attachus oblique,narrowed at insertion to .3mm;up to a. The leaves broadest below middle,narrowed above to a rounded apex. Cells,apical averaging 10 u,rather irregular (13-22u) 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 deeeply plicate,with numerous long celldd crenulations,1-2 cells high,base .3 mm. Rhizoids numerous on stems Type,Canyon Creek,Monte Vista Dam,Placer Co,California,July 11,1933, Coll W A MacFadden. In Herb MacFadden