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



Florescentia monoica : flores faminei constanter trigyni ; flores 

 masculi polyandri, paraphysibus claviformibus jirsediti. Folia in di- 

 midio superiori plerumque (in varietate Grimsulana prsecipue) e 

 seriebus cellularum duabus conliata. 



M. Philippe's specimens have the terminal leaves distinctly re- 

 pando-dentate, and thinner than in the ordinary form of the species. 



387. A. rupestris, L. Sp. PI. p. 1601 {s,uh Jungermannia) ; 

 Hedw. Sp. Muse. t. 7 ; M. P. 330. 



Hab. Z2_4 P. c. cum priore ; etiam in rupibus diet. Chaos prope 

 Gavarnie. 



Florescentia monoica : fiores foeminei di-trigyni ; flores masctili 

 tetrandri, paraphysibus carentes, nonnunqiiam in planta propria 

 pseudo-alares. 



Ordo HEPATIC^. 



Tribus 1. Jungermannie^, Nees ab E. 



Hemicyelum 1. Foliosce. 



Subtribus 1. Gymnomitria^ N. ab E. 



1. Gijnmomitrium, N. ab E. 



1. G. concimiatum, Lightf. PL Scot. 2. p. 786 (sub Junyer- 

 mannia); Gottsche, Lindbg. et Nees, Syn. Hepat. p. 3 j H. P. 1. 



Hab. Z2_4 in rupibus humidis P. occ. et c, locis Pont d' 

 Espagne et Port de Benasque. 



2. Sarcoscyphus, Corda. 



2. S. adustus, N. ab E. Europ. Leberm. 1. p. 120 (sub Gymno- 

 mitrio) ; Syn. Hep. p. 4. 



Hab. Zj P. c. ad saxa in monticulo Olivet ^vo-pe B.-de-Bigorre, 

 socio S. Funckii. 



The habit of this species, the difficulty with which it is distin- 

 guished from small forms of S. Funckii, and above all the structure 

 of the perianth, demand that it should be removed to the genus Sar- 

 coscyphus. I find in all cases a true perianth present, the origin of 

 which is derived from the union of two leaves quite concealed hy the 

 perichsetial leaves, with which it is concrete for nearly half its length : 

 it is pale and of very delicate texture (cellules three times as large 

 as those of the perichsetium), erose and inflexed at the summit and 

 sometimes 2-lipped. The perianth of -S. Funckii is formed on the 

 same type. In some true Gymnomitria (e. g. G. concinnatum) I ob- 

 serve within the pericheetium two leaves (rarely only one) which are 

 much shorter, wider and more tender than the perichsetial leaves, and 

 unequally trifid with toothed segments ; but these are neither connate 

 with each other nor concrete with the perichsetium, hence they can- 

 not be called a perianth, although obviously supplying the place of 

 one. Still it would perhaps be more logical to consider Gymnomi- 

 trium as only a section or subgenus of Sarcoscyphus. I am happy 



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