icoNES MuscoRUM. ; 35 



TRICHOSTOMUM MACROSTEGIUM, SulUv. 



Tab. 22. 



Plants gregarioe, brunneo-virides. 



Caulis brevis, lineas 3 baud excedens, gracilis, simplex. 



Folia e basi longe pellucide arapliuscule areolata, vaginantia, 

 superne dilatata et uiidulata, erecto-patentia, ovato-acuminata vel 

 lanceolata ; folia pericbaetialia longiora, margine flexuoso-involuta, 

 omnia superne dense quadrato-areolata, apice plus minus serrata ; 

 costa valida percurrente. 



Flores dioici ? Plantae masc. ignotae. 

 ~ Capsula anguste cyliudracea, curvula, inclinata ; operculo lon- 

 gissime aciculari ; peristomii dentibus longis leniter contortis 

 ati'opurpureis papillosis fdescenti-attenuatis ; calyptra convoluta. 



Trichostomum MACROSTEGIUM, Sulliv. Musci Cubenses Wrightiani 

 (1861), No. 24. 



Hab. Mobile, Alabama, on dry sandy banks, Carl Mohr. 



The distinguishing characters of this species are the sheathing 

 bases of its leaves, particularly the perich^etial ; the remarkably 

 long operculum, exceeding in length the slender, cylindrical, in- 

 clined and often horizontal capsule ; and the finely attenuated 

 apices of the teeth of the peristome. 



TAB. 22. — Trichostomum macrostkgium. 



1. Plantas nalurall magniludine. 



2. Planta. 



3. Folia caiilina et perichieiiilia. 

 4., Sectio transvirs.ilis f'olii. 



f>. Ejiisdoin areulatio. 

 6, 7. Capsula operculata et deopereulata. 

 8, 9. Pars capsula; pectristomii. 

 10. Calyptra. 



