Mr. R. Spruce on the Musci and Hepaticce of the Pyrenees. Ill 



under the name of " Jg. excisa :" these belong in nearly equal quan- 

 tities to three species, viz. : 



1. J. ventricosa, forma minor = /. excisa, Hook. t. 9 (excl. 



var. /3). 



2. J. bicrenata, Lindbg. = /. excisa gemmifera, Hook. t. 



Suppl. 2. 



3. /. capitata, Hook. = /. excisa /3. crispata, Hook. t. 9. 



ff. 2, 11, 12 = J. intermedia, Lindbg. 

 It is exactly the same with specimens of " Jg. excisa " from the 

 continent of Europe, nor have I ever seen a specimen agreeing with 

 the descriptions that have been given of this species. Hooker says 

 of Jg. excisa, " foliis profunde emarginatis ;" of Jg. ventricosa, " foliis 

 obtuse emarginatis :" Lindenberg says of Jg. excisa, " DifFert 

 foliis minus profunde incisis :" lastly, the authors of ' Synopsis Hepa- 

 ticarum ' describe Jg. excisa, " foliis . . , sinu prof undo obtuso excisis." 

 From these and similar discrepancies, I cannot help concluding that 

 these distinguished hepaticologists had under their eyes small forms 

 of more than one of the three species above -cited when they drew up 

 their descriptions of the supposed "Jg. excisa, Dicks." Dr. Gottsche 

 has even admitted to me that he is unable to determine Jg. excisa if 

 given to him without a name. He adds, " what I have received from 

 my English and German friends under the name of Jg. excisa differ 

 so much from each other, that I confess not to know the species." 



34. J. incisa, Schrad.; Hook. Br. Jung. 1. 10; Syn. Hep. p. 118 ; 

 H. P. 37. 



Hab. Z _2 in truncis prostratis cariosis Pyrenseorum, frequens. 

 " Ad terram humidam ac in rupibus muscosis circa Aquas Tar- 

 bellicas" (Grateloup, /. c). 



The leaves of this species are normally conduplicate ; the lowest 

 unequally bidentate with diverging segments, as in many Scapanice ; 

 the upper with very unequal lobes, the dorsal lobe triangular, undi- 

 vided, appressed to the stem, the ventral lobe bifid : both either entire at 

 the margins or with a few spinulose teeth. This is the typical struc- 

 ture, but, very rarely, the dorsal lobe is also bifid, and sometimes the 

 ventral lobe is not bifid, but cut at the margin into several unequal 

 spinulose teeth : sometimes it is trifid. In all cases the complication 

 is discernible, notwithstanding the thickness of the stem, and even 

 when the lobes are squarrosely spreading (as is seen also in some 

 true Scapanice, e. g. in varieties of S. nemorosa}. Hooker's figs. 3 

 and 4, tab. 10, show this quite distinctly. 



35. J. minuta, Crantz ; Hook. Br. Jung. t. 44; Syn. Hep. 

 p. 120; H. P. 38. 



Hab. Z 2 P. occ. ad rapes, haud vulgata, locis Vol de Jeret et 

 Montagne Verte. 



§ 4. Bicuspides, Syn. Hep. (= Trigonanthus, nob. in hb.). 

 Obs. This very natural group, resembling Lophocolea in the nature 

 of its fructification, may well constitute a separate genus, for which 



