Orthotrichum.] DIPLOPERISTOMI. 131 



The present plant agrees perfectly with the description of 

 Funck above quoted, and equally with his specimen, except 

 that in the latter the capsule can scarcely be termed exserted, 

 whereas in this individual it is decidedly so. The figure of 

 Nees, in Sturm's Flora, has likewise its capsule subimmersed 

 and perfectly smooth ; in which respect it agrees with a North 

 American species, O. elegans. In this individual the teeth are 

 eight in number, geminate, soon becoming reflexed and splitting 

 into 16, which are approximated in pairs. In some arctic speci- 

 mens of this moss, we find the capsules to be nearly as much 

 exserted as in O. anomalum ; a character, which, with the 

 different conformation of its teeth, serves to discriminate this 

 from O. affine. The colour of the foliage is reddish-brown, 

 resembling that of many tropical species. 



The figures above quoted of Hedwig, excluding f, 9. 

 are so admirably characteristic of this species, that we have 

 no hesitation in referring them to it. 

 11. O. Hutchinsice ; stems erect, leaves lanceolate erect rigid 



capsule clavate furrowed, calyptra very hairy. (TAB. XXI.) 

 Orthotrichum Hutchinsiae. Smith, Engl. Bot. t. 2523. Hobson, 



Brit. Mosses, v. 2. n. 44. Hook. Fl. Scot. P. II. p. 137. Funck, 



Deutschl. Moose, t, 23. n. 3. Moug. et Nestl n. 618. Schwaegr. Suppl. 



v. 2. P. II. p. 138. Drummond, Muse. Scot. v. 2. n. 53. Hook, and 



Grev. in Edin. Journ. of Science, v. 1. p. 125. Am. Disp. Muse. p. 18. 

 Orthotrichum americanum. Beauv. Schwaegr. Suppl. v. 2. P. II. 



t. 138. (according to Arnott.j 



HAB. First discovered in Ireland, by the sides of lakes, 

 near Bantry. Miss Hutchins. Also in the county of 

 Wicklow. Banks of the Plyme, Devonshire.' Rev. J. 

 S. Tozer. In various parts of Scotland. Greville and 

 Hooker. 



The present species, though it has the capsule, calyptra, and very 

 nearly the peristome of O. crispum, yet differs essentially from 

 it in the leaves, which bear a close resemblance to those of O. 

 anomalum, are of the same brownish colour, and nearly as 

 erect when dry as when in a moist state. The fruitstalks, 

 which are quite as much exserted as those of O. crispum, are 

 often twisted. The peristome only differs from that of the last 

 mentioned species by its having the eight teeth (when recurved,) 



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