Mr. R. Spruce on the Musci and Hepatica of the Pyrenees. 499 



a series of lozenge-shaped openings at the cellular angles. These 

 openings are the sections of slender chlorophyllose cellules, running in 

 lines from the base to the apex of the leaf, and having no communica- 

 tion by pores with the perforated tissue in which they are interposed. 

 [See fig. 3, which represents part of a longitudinal section through 

 one of these series of chlorophyllose cellules, magnified about 600 

 times.] These at once suggest the slender vermiform cellules simi- 

 larly interposed in the prosenchymatous tissue of the Sphagna, of 

 which the office is precisely the same, namely to contain the grains 

 of chlorophyll*. 



Tribus 34. Sphagnace^, C. Mueller. 

 73. Sphagnum, Dillenius, 



381. S.acutifolium, Ehrh. Crypt, exsicc. n. 72; Scliwgr. Suppl. 

 t. 5 ; M. P. 325. 



Hah. Z^ P. c. in rupibus humidis vallis Lesponne et secus lacum 

 Seculejo. 



382. S. cuspidatum, Ehrh. Crypt. 251 ; Schwgr. Suppl. t. 6. 

 Hab. Zq p. occ. in turfosis prope Dax (Grateloup !). 



383. S. squarrosum, W. et M. It. Suec. t. 2. f. 1 ; Schwgr. 

 Suppl. t. 4 ; M. P. 326. 



Hab. Z2_3 P. occ. et c. in rupibus humidis, locis Lesponne, 

 Labassere et Mt. Crabioules. 



384. S. cymbifolium, Ehrh. Hann. Mag. 1780, p. 235 ; M. P. 

 327. S. obtusifolium, Ehrh. ; H. et T. Muse. Brit. p. 13. t. 4. 



Hab. Zo_i P. c. in rupibus humidis faucis Gorge de Labassere 

 dictse. P. occ. in palude turfaceo montis Goursi. Nusquam alias 

 in montibus Pyrenseis mihi notum ! In tm-fosis Agri Syrtici 

 (Grateloup !). 



385. S. compactum, Brid. Suppl. Muse. 1. p. 18 j Schwgr. 

 Suppl. t. 3 ; M. P. 328. 



Hab. Zq p. occ. in Agro Syrtico, loco Landes de Mugriet, 

 copiose. 



Tribus 35. AwDREiEACE^, C. Mueller. 



74. Andrecea, Ehrhart. 



386. A. Rothii, W. et M. Cr. Germ. p. 386. t. 11 ; Schwgr. 

 Suppl. t. 106; M. P.329. 



Hab. 7a2—4, p. c. in rupibus graniticis juxta lacum Seculejo, 

 necnon in valle Castelloubon ; in rupibus micaceis ad marginem 

 lacus Lehou (Philippe !). 



* Since this account was drawn up, Leucobryum glaucum has appeared 

 in the ' Bryologia Europaea ' under the name of Oncophorus glaucus, and a 

 description is given of its structure differing I believe in some slight parti- 

 culars from what is here stated. 



32* 



