608 (8) MUSCI. (MOSSES.) 



Artificial Analysis of the Genera. 



I. ACROCAKPI. Fruit terminal. 



A. Capsule -without a deciduous operculum. 



* Capsule dehiscing by irregular ruptures. 



3. AECHlDiUM. Calyptra torn irregularly at the middle. 



5. BRTJCHIA. Calyptra circumcissile at the base. Capsule apophysate. 



4. PHASCUM. Calyptra circumcissile at the base. Capsule not apophysate. 



* * Capsule dehiscing by 4 longitudin a l sUts. 

 2. ANDRiEA. Capsule sessile on a pedicellate vaginula. 



B. Capsule dehiscing by a deciduous operculum. 



* Mouth of the capsule naked. 



•(- Capsule sessile on a pedicellate vaginula. 



I. SPHAGNUM. Calyptra irregularly torn, persistent. 



.1- ^- Capsule on a proper pedicel : vaginula not pedicellate. 



6. GTMNOSTOMUM. Calyptra cuculliform. An theridia terminal. 



25. POTTIA. Calyptra cuculliform. Antheridia asiUary. 



56. APHANORHEGMA. Calyptra mitriform. Antheridia axillary. 

 55. PHYSCOMITRIUM. Calyptra mitriform. Antheridia terminal. 

 40. HEDWIGIA. Calyptra conic. Antheridia axillary. 



* * Mouth of the capsule furnished with teeth. 



-I- Peristome single. 



1-+ Teeth of the peristome 4. 



26. TETRAPmS. Calyptra mitriform. Plants -with a conspicuous stem. 



27. TETRODONTIUM. Calyptra dimidiate-mitriform. Almost stemless plants. 



■H- .H- Teeth of the peristome 16. Calyptra mitriform. 

 a. Calyptra plicate. 



35. PTYCHOMITRrUM. Teeth deeply bifid ; their segments adherent. 



38. COSCmODON. Teeth cribrose. 



b. Calyptra not plicate. 

 37. GRUDIIA. Teeth entire, cribrose or 2 -3 cleft at the apex. 



36. SCHISTIDIUM. Teeth as in No. 37. Columella adherent to the operculum. 



39. KACOMITRIUM. Teeth filiform, 2-3-cleft to the base. 



57. SPLACHNXTM. Teeth in pairs, reflesed when di-y. 



18. CONOMXTRIUM. Teeth truncate, very short, more or less perforated. 

 4^.4+++ Teeth of the peristome 16. Calyptra cuculliform. 

 a. Leaves 2-ranked. 

 17. FISSIDENS. Teeth cloven half-way into two unequal segments. 

 24. EUSTICHHIM. Fruit unknown. 



23. DISTICHTUM. Teeth usually enture ; if cloven, their segments equal. 

 6. Leaves spreading every way. 

 1. Capsule cernuous-inclined, unequal. 



14. DICRANTIM. Teeth as in Pissidens. Leaves furnished with a costa. 

 16. LEUCOBRYTBI. Teeth as in Pissidens. Leaves destitute of a costa. 



15. CERATODON. Teeth deeply bifid. Capsule with a short struma. 



12. TREMATODON. Teeth cleft below. Capsule with a long and linear apophysis. 

 52. COXOSTOMUM. Teeth united at the apex. Capsule ribbed. 



2. Capsule somewhat pendulous on an arcuate pedicel, equal. 



13. CAMPTLOPUS. Teeth deeply bifid. Calypti-a fringed at the base. 



II. DICRANODONTIDM. Teeth deeply bifid. Calyptra not fringed at the base. 



