36 ICONES MUSCORUM. 



DESMATODON POETERI, James. 



Tab. 23. 



Plants caespitaiites, humillimae, fusco-virides. 



Caulis 1-2 lineas altus, simplex vel innovante ramulosus. 



Folia caulina conferta, erecto-patentia, ab infimis ligulatis 

 gradatim amplexiora, late ovato-oblonga, acuta, margine erecta, 

 siiperne limbo plus minus distincto circumducta ; cellulis partis 

 superioris (limbo excepto) minutissimis hexagono-rotundis valde 

 opacis lunulatim papillosis, inferioris amplis oblongis diaphaiiis ; 

 costa valida cum vel sub apice desiiiente. 



Flores dioici : masc. gemmacei in plantis gracilioribus termi- 

 nales vel innovatione laterales. 



Capsula in pedicello 5 - 8-lineari erecta, cylindrica ; operculo 

 longiusculo crasso rostrato-obtuso ; annulo spectabili ; dentibus 

 ])eristomii longiusculis leniter obliquatis sedecem usque 

 ad mcmbranam basilarem paululum emergentem bipartitis, 

 cruribus filiformibus longis articulatis scabris hie illic anastomo- 

 santibus. 



Dksmatodon Porteri, James, Mss. 



Hab. On rocks, Easton, Pennsylvania, T. C. Porter. 



This species is distinguished at first sight from its congeners 

 by its loaves with erect and margined borders. 



TAB 23. — DeSMATODON PORTKRI. 



1. Flantas nuturali ma fj nil udine. 12. Operculum, 



2, 3. Plaiita masc. ct fern 13. Pars jjcristomii cum annulo. 



4, 5. Folia caulina et pcrichaetialia. 14. Gcnuna juascula, anthcridium, et 

 6, 7. Sectio transv. et areolatio fblii. parapliysis. 



8, 9. CapsulsB et operculum. 15. Vaginula cum archegoniis. 

 10, 11. Capsula vacua et ejusdem 

 peristomium. 



