TORTULACE.E.] 277 [Cinclidotus. 



Autoicous; caespitose, lurid green, stem short, almost simple. 

 Leaves flaccid, erecto-patent, lower ovate-oblong, upper broadly ovato- 

 lanceolate, the margin revolute, except at the faintly toothed apex, nerve 

 excurrent in a piliform arista ; cells at base rectangular, hyaline, above 

 hexagonal, chlorophyllose, densely papillose, the marginal more trans- 

 parent and forming a yellowish border. Caps, on a slender purple seta, 

 cylindraceous, inclined and usually curved, fuscescent, finally reddish 

 brown ; annulus simple, lid conico-rostellate ; peristome a short pale 

 basal tube, the teeth red, fragile, scabrous, obliquate. Male infl. at base 

 of female, bracts i 3, thin, aristate. 

 HAB. Wet crevices of alpine rocks. Fr. 7 8. 



The Rev. J. Fergusson informs me that this species certainly occurs in 

 Scotland, but as he has not favoured me with specimens, I have made the 

 drawing from a Norwegian one. 



It deviates from our other species of this section by the shortness of the 

 tubular base of peristome, but stands next to another Norwegian species, 

 T. Lauren (SCHULTZ), and also comes near to T. (Desmatodon) latifolia (HEDW.) 

 and T. systylia (BR. SCH.). 



Subf. 2. CINCLIDOTE^E. Tall aquatic mosses, forming black-green 

 mats, fasciculate-branched. Leaves solid, strong-nerved. Caps, immersed, 

 at end of primary shoots. Per. a cancellated basal membrane, with filiform 

 processes cohering at base by trabeculae. 



CINCLIDOTUS. P. BEAUV. 



Prodr. p. 28 (1805). 



Cladocarpous, fixed to stones and floating in water. Leaves solid, 

 strong-nerved, bordered. Fruit terminating the primary branches, 

 immersed ; calyptra conico-cucullate ; peristome on a cancellated 

 membrane, of 16 teeth, each divided into 23 slender filiform legs. Der. 

 /cty/cXtSwTos latticed. 



I have preferred this name to the older one, Sekra of Adanson, as apart 

 from its barbarous sound, the character assigned to it would not be suffi- 

 cient to identify it ; the Linnean specific name also is in relation to Fontinalis 

 antipyretica, with which the present has no affinity. 



CINCLIDOTUS FONTINALOIDES (Hed.) P. Beam. 



Dioicous; in olive green fasciculate floating tufts. Leaves elon- 

 gate-lanceolate, patulous. Caps, immersed, ovate-oblong ; peristome 

 filiform, twisting to the right. (T. XLI, F.) 



SYN. Fontinalis minor, foliis triangularibus minus complicatis, capitulis in summis ramulis 

 sessilibus DILL, in RAY Synops. 3 ed. 79 (1724). 



