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



I propose the name Trigonanthus . Many of the species are stellatedly 

 branched, and, in all, the branches seem to have the same origin (<? 

 dorso). In those species which have the stems exstipulaceous , there are 

 always involucral stipules present, e. g. in Jg. hicuspidata, where the 

 lowest stipule is lanceolate, the second obcordate, the third obcordate 

 with a deeper notch, the /oMrM (next the perianth) irregularly trifid, 

 and the perianth itself is composed of a fifth stipule connate with two 

 opposite leaves : hence its trigonous form and obvious affinity to that 

 of Lophocolea. The capsule is always oblong, and often remarkably so. 



36. /. divaricata, Smith ! in E. Bot. t. 719. J. Starkii, Hb. 

 Funck; Syn. Hep. p. 131; H. P. 39. 



Hab. Zg P. c. supra ligna putrida in sylva Foret de Transoubdt 

 dicta, non procul a B.-de-Bigorre. 



I have examined the original specimen of Jg, divaricata, figured 

 in ' English Botany,' from " Heaths near Holt, Nov. 1798, Rev. Mr. 

 Francis " ; it possesses very distinct stipules (!), and agrees in other 

 respects with what has been called Jg. Starkii by German authors, 

 and by Dr. Taylor Jg. stellulifera. My own herbarium contains a 

 great many forms, some stipulaceous throughout the length of the 

 stems, others only towards the apex, and some altogether without 

 stipules. Between all these I can draw no certain line of demar- 

 cation, and if there be more than one species there must be several. 

 In every form the leaves are nearly of the same width as the stem, 

 roundish in outline or a little quadrate, the segments mostly acute 

 and either diverging or connivent (when the leaves appear subcom- 

 plicate), the cellules mostly 4-sided with rounded angles and discrete 

 by narrow interstices. In all there is the same peculiarity of the 

 involucral leaves being united so as to form one or two exterior pe- 

 rianths ; all have these leaves toothed and the real perianth more or 

 less ciliated at the mouth. 



37. /. Francisci, Hook. Br. Jung. t. 49 ; Syn. Hep. p. 133 ; 

 H. P. 40. 



Ilah. TiQ P. occ. ad fossarum parietes in ericetis Agri Syrtici, 

 loco Landes de Mugriet. 



38. /. dentata, Raddi in Mem. della See. Ital. di Mod. xix. 

 p. 32; Syn. Hep. p. 143. 



Hab. Zq p. occ. St. Sever y in arenosis, sociis /. bicrenata et 

 Trichostomo subulato. 



This differs somewhat from the description in * Synopsis Hepati- 

 carum.' The stems are closely creeping, mostly simple, rarely with 

 one branch. Leaves brownish, crowded and capitate on the flower- 

 ing shoots, scarcely at all complicate, cloven mostly to below the mid- 

 dle, spinuloso- dentate, the cellules rather small but discrete (not with 

 such wide interstices as in Jg. Turneri). Stipules, on the lower part 

 of the stem, minute, irregular in form, usually lanceolate or subu- 

 late and toothed ; towards the apex larger, those of the involucre 



