JUNGERMANNIA 97 
of reddish-purple—the agreement with European specimens of 
Nardia obovata is, however, so close that at least until more com- 
plete material is obtained we can do no better than to identify it 
with this species. In European specimens the root-hairs are some- 
times colorless in certain parts of the stem, though we have never 
observed in these any such widely extended decoloration as in our 
Humboldt County plant. In regard to characters of leaves and leaf- 
cells, the correspondence between the Californian specimen and no. 
870a of Jack, Leiner, and Stizenberger’s Kryptogamen Badens is 
especially striking. Тһе larger, more ovate, more distant, more 
patent-horizontal, and occasionally subsquarrose leaves stand in 
the way of referring the plant to Мала hyalina (Lyell) Carr., 
while the firmer, subtruncately rounded, occasionally emarginate- 
retuse, decurrent leaves, and the more distinct trigones seem to 
preclude the possibility of its being any condition of Jungermannia 
riparia Тау]. 
20. JUNGERMANNIA* L. р. р. (2) Sp. Pl. 1131. 1753. Ех 
Rupp. Fl. Jen. 345. 1718. Dumort. р. р. max. 
Rec. d' Obs. Jung. 16. 1835. 
Jungermannia $ Арона Dumort. р. р. max. Syll Jung. 47. 
1851. 
Aplozia Dumort. р. р. max. Hep. Eur. 55. 1874. 
Liochlaena Nees, С. Г. & N. Syn. Hep. 150. 1845. 
Jungermannia, subgenus Eujungermannia $1, Spruce, Trans. 
and Proc. Bot. Soc, Edinb. 15: 508. 1885. 
a. танк БИНО EM 
Professor Schiffner (Eng. & Prantl, Nat. Pflanzenf. 13: 82. 1893) has discarded 
E 
Jungermannia altogether as a generic name inasmuch as the Jungermannia of modern 
auth 5 come to bear little or no resemblance to the group recognized under this 
1 even though one or two of them did belong to the group **4f/osia." Dumortier 
1831 divided what was left of Jungermannia, after several excisions had been made, 
n NN Sections, two af which wes Jl ‘роза and Lophosia. In 1835 he elevated 
