ICONES MUSCORUM. 



69 



TAB. 50. — OUTIIOTUICIIUM PSri.OCAKPUM 



1. Plantjc naturali mnrjuitudino.. 



2. Planta cum foliis et eapsula. 



3. Folia. 



4. Sectiones transvcrsales folii. 



5. Areolatio basilar is et apicialis 



ejusdem. 



6. Capsulse plenum et operculataj. 



7. Capsiila vacua. 



8. Particula peristoniii. 



9. Areolatio capsulaj. 



10. Cilium. 



11. Calyptra. 



12. Gemma uiascula et archegoniuni. 



13. Vaginula. 



ORTHOTRICHUM ALPESTRE, Ilornsch. var. 



Tab. 51. 



A forma normal! differt, statiira robiistiori, caespitium colore 

 glauco-viridi, foliis latioribns crassis margine tantum reflcxis, 

 reti papillis eximie eloiigatis simplicibus vel furcatis, peristomii 

 dentibus longioribiis integris minute punctatis. 



Orthotrichum ALPESTRE, Hornscli. ; Bryol. Europ. Suppl. 1, p. 1, t. 213. 



Orthotrichum affine, Hook. & Wills, in Drum. 1 coll. No. 149. 



Orthotrichum occidentale, James in Wats. Cat. Exp. 40th paral. CI. 

 King, p. 402. 



Hab. Rocky Mountains, Drummond. On rocks, Uiiita Moun- 

 tains and Provo Canon, Utah, at 8,000 feet altitude, S. 

 Watson. 



