- 
Mr. R: Spruce on the Musci and Hepatice of the Pyrenees. 287 
_ The scabrous sete, the tristriate leaves, and the whole habzt of this 
species bring it so near J. sericeum, that in a natural distribution I 
apprehend they must be placed in the same genus. Besides, if we 
compare the fructification, we shall not find very great differences. 
The capsule of I. lutescens (as above intimated) is sometimes elon- 
gated and very nearly erect, although never quite symmetrical. The 
inner peristome, as in I. sericeum and Philippianum, has the cilia either 
wholly or in part absorbed at the period of maturity, although capsules 
not quite ripe show slender 2—3-nate cilia. (1 have observed similar 
circumstances in I. polyanthum.) The chief difference from J. seri- 
ceum is in the lacunose processes and their very slight granulation. 
The annulus is double. The inner membrane of the capsule projects 
beyond its mouth the breadth of the annulus before it is divided. 
_ The teeth are strongly trabeculate within and enveloped in a delicate 
membrane. 
87. I. sericeum, L. Sp. Pl. p. 1595 (sub Hypno); M. P. 76. 
Leskea s., Hedw. Musc. Frond. 4. t. 17. 
Hab. Z)_2 in arboribus, &c. vulgatissimum. 
88. I. Philippianum, Spruce in Muse. Pyr. 77: dioicum ; caule 
prostrato, radicante, diviso ; divisionibus pinnato-ramosis, ramis 
erectis, plerumque simplicibus ; folis dense imbricatis, erectis, 
lanceolato-acuminatis, striatis, toto ambitu minute denticulatis, 
nervo percurrente ; pedicello levi, rarius scabriusculo; capsula 
erecta, symmetrica, ovato-cylindrica; operculo breviter rostrato, 
rostro subcurvato ; calypira dimidiata, glabra. 
Hab. Zy guy. P. c. ad saxa calearea in umbrosis montis Liieris, 
prope Bagnéres-de-Bigorre ; etiam in rupibus graniticis sylvze 
Bois de Gouerdére dict, prope B.-de-Luchon. Auctumno et 
hyemis initio fructificat. 
Plante \atas plagas efficientes. Caulis 2-6 uncias longus, pinnatus, 
ramis suberectis, simplicibus, rarius furcatis, hic illic radicans et ist- 
hine divisiones pinnato-ramosas edens. Folia densa, erecta, supe- 
riora nonnunquam (in sicco saltem statu) subsecunda, omnia lanceo- 
lata seu ovato-lanceolata, acuminata, acumine caulinorum tenuiori, 
plicato-striata, toto ambitu minute denticulata, nervo continuo in- 
structa, e cellulis minimis lineari-elongatis areolata, viridia aut auro 
subnitentia. Florescentia dioica: flores masculos non habui : faminei 
cauligeni, elongati, foliis numerosis, 24 et pluribus, erectis, arcte va- 
ginantibus, interioribus acumine setaceo, flexuoso terminatis, leviter 
plicatis, obsolete nervosis, paraphyses copiosissimas archegoniis lon- 
giores complectentibus. Vaginula oblongo-cylindrica, viridis. Pedi- 
cellus uncialis, levis vel rarius et inferne precipue scabriusculus, sic- 
citate dextrorsum contortus. Capsula erecta, symmetrica, ovato-cylin- 
drica, microstoma, pallida. Peristomii externi dentes subulati, qua- 
drangulares, transverse septati (haud trabeculati) ad basin versus 
tantum linea media exarati, sparsim papillosi, pallidi: interni mem- 
brana profunde (usque ad +) fissa, lutescens ; processibus dentes fere 
