108 Mr. t. Spruce on the Musci and Hepatice of the Pyrenees. 
24. J. cordifolia, Hook. Br. Jung. t. 32; Syn. Hep. p. 95 ; 
H. P. 24, 
Hab. Z,_3 P. c. in fontibus profundis secus ripas flum. Adour, 
in pagi Asté conspectu; necnon in humidis montis Crabioules. 
Dr. Gottsche informs me that this species does not differ from J. 
tersa y. rivularis of German authors. 
25. J. riparia, Tayl.! in Annals of Nat. Hist. xu. p. 88; 
Syn. Hep. p. 97; H. P. 25. 
Hab. Z,_3 in rupibus wroratis, rarius ad terram, frequens. 
This species is often mixed with Jg. acuta, but it is not, like that 
species, confined to calcareous rock. 
26. J. pumila, With. Arrang. 3. p. 866; Hook. Br. Jung. 
ti 17. 
Hab. Z, P.c. ad saxa in sylva Bois de Sajust dicta: aliubi 
haud visa. 
I cannot distinguish authentic specimens of Jg. Zeyheri, Hueben, 
from this. Both are remarkable for the perianth terminating in a 
cone, which is not plicate, but has a furrow on each face, that on the 
dorsal being most evident, and along this the dehiscence takes place 
for the emission of the capsule. 
§ 3. Bipentes, Syn. Hep. 
27. J. acuta, Lindbg.; Syn. Hep.! p. 103. J. Muelleri, 
N. ab E.; Syn. Hep.! p. 99; H. P. 26, 27, 28+. 
Hab. Z,_. locis caleareis subhumidis terrestris et saxatilis, ra- 
rius lignicola, per Pyrenzos frequentissima. 
In ‘Hepatice Pyrenaice’ I gave three forms of this species, 
scarcely differing from each other except in size; the third form 
(No. 28) attains a length of 3 or 4 inches, and forms closely-tufted 
patches on the nearly vertical faces of rocks watered by the spray of 
rivulets in the upper part of the Vallée d’Ossau and the Gorge de 
Labassére. I there considered Jg. Bantriensis, Hook. Mst., which 
I gathered abundantly in Teesdale in 1843, as belonging to the same 
species, but at Dr. Gottsche’s suggestion I have reconsidered this 
opinion, and I now think that the two may in all cases be safely 
distinguished. The differences are these :—in Jg. Bantriensis the 
leaves are always more or less erect, and in the large form they are 
secund, the two rows being contiguous by their upper surfaces, which 
I have never seen to be the case in Jg. acuta; they are also less un- 
dulate, the sinus not gibbous, though from the incurvation of the apices 
there is sometimes the appearance of it. Perianth when young (and 
in all stages when unfertile) pyriform or broadly clavate ; while the 
perianth of Jg. acuta, in all states and at every age, even when quite 
* Jg. acuta and Muelleri are now ascertained to be absolutely identical, 
the former having the stipules nearly or altogether obsolete. 
