76 APLOPERISTOM1. I Weissia. 



nerve disappearing below the summit, capsule obovate, apo- 



physis obconical, lid convex acuminulate. (TAB. XIV.) 

 Weissia splachnoides. Schwaegr. Suppl. v. 1. p. 63. t. 17. Brid. 



Meth. p. 45. Hook. Fl. Lond. (cum ic.J Fl Scot. P. II. p. 130. 



Grev. Scot. Crypt. Fl t. 145. Funck, Deutschl. Moose, t. 9. n. 1. 



Drummond, Muse. Scot. v. 2. n. 33. 



Grimraia splachnoides. Smith, Fl. Brit, p, 1197. Engl. Bot. t. 



2164. 9 



Splachnum lingulatum. Dicks. Crypt. Fasc. 4. t. 10. /. 6. Smith, 



Fl. Brit. p. 1177. (exd. syn. Swartzii.) Engl. Bot. t. 2095. Brid. 



Meth. p. 105. 



Cytodon splachnoides. Brown, in Parry's First Voyage. 



Dissodon splachnoides. Grev. et Am. in Wern. Trans Arn. Disp. 



Muse. p. 13. 



HAB. Turf bogs on the Scottish alps. 



Although this plant has the habit, leaves, capsule, and apo- 

 pnysis, and the same place of growth as the Splachna, yet the 

 peristome is undoubtedly divided into 16 distinct teeth, and these, 

 when examined in a state of moisture, appear to be approximated 

 in pairs, when dry and the teeth are erect, they seem to be placed 

 at equal distances. This we find to be the case in several in- 

 dividuals which we have examined, and to this circumstance it 

 may be owing that some authors have asserted that the teeth 

 are equidistant, while others have remarked their being gemi- 

 nate. We have never been so fortunate as to have seen a 

 Catyptra. An anonymous writer in the Bot. Zeitung, alleges 

 that it is mitriform, and hence argues that this plant should be 

 arranged among the Splachna ; but Wahlenberg says " Calyp- 

 tra later alls ;" and till we can be more certain on this point we 

 prefer leaving it among the Weissice. 



Mr. Arnott observes, that W. splachnoides has also each of 

 the 16 teeth geminate ; a character which still farther connects 

 it with the genus Splachnum^ and which is not to be found in 

 any other Weissia. Its columella is also that of a Splachnum. 



The species most nearly allied to the present plant is Splach- 

 num reticulatum, which, besides the configuration of the peri- 

 stome, may be known by its smaller size, much shorter fruit- 

 stalks, and ovate, not lingulate, leaves. In both mosses the leaves 

 are remarkably obtuse, of a dark colour, strongly reticulated, and 

 glossy when dry. The Grimmia splachnoides, figured in Engl. 



