98 Illinois State Laboratory of AW^/v// History. 



XXYIII. JUNGERMANIA L. 



Fructification terminal on the main stem or on a short 

 branch. Involucral leaves free, like or unlike the stem leaves. 

 Inner involucre tubular, more or less angular, the mouth lacin- 

 iate. Calyptra included, or in some species projecting. Cap- 

 sule globose or oval. Elaters bispiral. Antheridia in the base 

 of special inflated leaves. Leaves entire, bideiitate, or 2-many- 

 lobed or cleft. Amphigastria present or absent. Named for 

 L. Jungermann, a German botanist of the 17th century. 



(The genus as originally described by LinnaBus included 

 nearly the entire order Jungermaniacece, but has been subdi- 

 vided over and over again so that its original characters are far 

 different from those given above. The genus as given here is 

 further broken up by recent European writers. ) 



* Leaves and amphigastria uniform, 3-ranked. 



1. J. julacea L. Stem ascending, branching, filiform; 

 leaves and amphigastria uniform, 3-ranked, imbricate, deeply 

 bifid, the Iacinia3 oval-lanceolate, acute, somewhat serrate; 

 inner involucre terminal, oval, plicate above, the mouth den- 

 ticulate; involucral leaves more closely imbricate, larger, other- 

 wise like those of the stem. (Anthelia julacea Dumort. ) 



. (fide Gottsche), Greenland ( Valil). (Eu.) 

 Bib. Syn. Hep. p. 140; Hep. Europ. p. 98. 

 Delin. Brit. Jung. t. 2; Bkart t. VIII, f. 61. 



** Amphigastria present, unlike the leaves. 

 f Leaves entire. 



2. J. Schraderi Mart. Stems creeping, flexuous; leaves 

 elliptic-orbicular, entire, ascending; amphigastria broadly sub- 

 ulate, obsolete on old stems; involucral leaves large, elongate, 

 entire or emarginate spreading at the apex, the inner smaller, 

 more or less laciniate; inner involucre oval-obovate, ascending. 

 (Aplozia Schraderi Dumort. ) 



Hob. On the ground, rotten wood, etc.; very common. (Eu.) 

 Bib. Syn. Hep. p. 83; Hep. Europ. p. 56. 

 Delin. Ekart t. XI, f. 97. 

 Exsic. Hep. Bor.-Amer. No. 27. 



Leares bidenfate. 



