JUNGEBMANIA. 351 



(Norway, Kaalaas). 7-9. Ditto x 24 (Lapland, Hb. Lindb.). 

 10. Portion of leaf x 290 (Scotland, Drummond). 11. Portion 

 of leaf, showing basal tooth x G4 (Norway, Kaalaas). 12,13. Sti- 

 pules X 64 (ditto). 14. Stipule x 85 (Lapland, Hb. Lindb.). 

 15, IG. Bracts x 24 (Finland, Hb. Lindb.) 17. Bracteole x 24 

 (ditto). 18. Perianth x IG (Scotland, Drummond). 19. Portion 

 of mouth of perianth x 85 (Finland, Hb. Lindb.). 20. PLstil- 

 lidium X 85 (ditto). 



30. Jungermania Helleriana, Nees. 



Jungermania Helleriana, Nees in Lindenb. Syn. Hep. Eur. p. 64 (1820). 

 Diplophyllum Hellerianum, Dum. Recueil, p. 16 (1835). 

 Jungermania verrucnlosa, var. Helleri, Lindb. Muse. Scand. p. 8 (1870). 

 Cephalozia Ilelleri, Lindb. Medd. af Soc. F. Fenn. 14, j). 65 (1887); Kaalaas 

 Leverme. Norge, p. 101 (189;>). 



Dioicous, growing in matted tufts, small, of a pale yellow, 

 yellowish-brown or reddish-brown colour. Stems slender, flexuose, 

 simple, or slightly branched, with slender, small-leaved innovations 

 23roduced from below the perianth ; densely radiculose, rootlets 

 short. Lower leaves small, distant, upper larger and crowded 

 near the apex, bifarious, secund above, transversely inserted, semi- 

 amplexicaul, subquadrate, ovate or oval in outline, divided to 

 about I" into two equal acute, sometimes cuspidate, rarely obtuse 

 segments, sinus acute, narrow; cells small, roundish, roundish- 

 oblong or oblong-quadrate, guttulate, cell-walls thick, angles 

 thickened, no trigones, upper leaves and perianth distinctly verru- 

 cose. Stipules rarely present, subulate. Bracts larger than the 

 leaves, subquadrate, 2-3-lobed, segments acute, spinose-dentate, 

 sinus acute, sub-bracts bifid to about J or -J-, segments acute, 

 margin entire. Bracteole simple, narrowly oblong, subquadrate, 

 laciniate, sparingly dentate, or obovate, subquadrate, bifid, dentate, 

 connate on one side to adjacent bract or free. Perianth projectino- 

 about |- beyond the bracts, ovate or oval, slightly plicate above, 

 mouth a little constricted, laciniate-ciliate or laciniate-dentate. 

 Male stems rather more slender, perigonial bracts middle or end 



