[299] HEPATIC^E OF ALASKA 353 



15. Jungermannia atrovirens Dumort. Syll. Jung. 51. 1831. 

 Aplozia atrovirens DUMORT. Hep. Europ. 63. 1874. 



Virgin Bay (Saunders 1427, in small part). New to Alaska. 



The specimens referred to this species, although very scanty, show 

 both male plants and female plants with perianths. They are mixed 

 with sterile specimens of an Aneura and a Lophozia, both of which 

 are indeterminable. J. atrovirens was first described by Dumortier, 

 but his description was so incomplete that the plant remained unrecog- 

 nized by European hepaticologists until the type-specimens were discov- 

 ered by Dr. Henri Bernet in the Schleicher Herbarium. Bernet de- 

 scribed the species more fully and gave an excellent figure of it, citing 

 numerous Swiss localities where it had been found. 1 The plant has 

 since been recorded from Scandinavia, from Styria, and from Green- 

 land. J. atrovirens differs fromy. pumila With, mainly in its dioi- 

 cous inflorescence and more plicate perianth. Some of the Alaskan 

 specimens show distinct but often minute trigones in the younger 

 leaves. These seem to become indistinct with age, and are not to be 

 clearly made out in the European material which I have studied. 



1 6. Jungermannia lanceolata L. 



Juneau (B. & C. 699). New to Alaska. 



Jungermannia cordifolia Hook., collected by the Drs. Krause at 

 ' Tlehini,' does not appear in the Harriman collections. 



17. Anastrophyllum reichardtii (Gottsche) Steph. Hedwigia, 32: 

 140. 1893. 



Jungermannia reichardtii GOTTSCHE ; Juratzka, Verb, zool.-bot. Gesellschaft 



zu Wien, 20 : 168. pi. 3 B. 1868. 

 Jungermannia nardioides LINDB. Muse. Scand. 8. 1879. 



Dioicous : caespitose or scattered among other bryophytes, blackish- 

 purple varying to brownish or brownish-green, glossy : stems dark, firm 

 and rigid, prostrate or usually ascending, simple or very sparingly 

 branched, in 9 plants often repeatedly innovant, more or less radi- 

 culose below with whitish or brownish rhizoids, mostly eradiculose 

 above : leaves more or less imbricated, ovate to rotund-quadrate when 

 explanate, complicate-bilobed about one-third with more or less in- 

 curved, mostly acute lobes and acute or obtuse sinus, antical lobe 

 slightly smaller than the postical, arching across stem at the rounded 

 or subcordate base, margin of leaves entire : leaf -cells with thick walls 

 and large, irregular, and often confluent trigones, but no intermediate 

 thickenings, cell-lumen distinctly stellate except near the edges and 



1 Cat. des Hdpat. du Sud-Ouest de la Suisse, 60. pi. 2. figs. 2, 3. 1888. 



