196 FLORA OF MOUNT DESERT. 



4. POLYCLADA. 



S. Wulfianum, Girgens. L. & J., Mosses N. A., 16. Var. viride, 

 Warnst. Bot. Gaz., xv. 225. 



Rare. Cold Brook; Beech Mt. (Rand). 



§ 5. RiGIDA. 



S. compactum, DC. S. rigidum, Schimp. L. & J., Mosses 

 N. A., 17. 



Frequeut in its three varieties. 



Var. squarrosum, Russ. Bot. Gaz., xv. 226. 



Woods, Lower Breakneck Pond (Faxon & Rand) ; — South- 

 west Harbor; Seal Harbor; Sargent Mt. (Rand); — Robinson 

 Mt. (Faxon). 



Var. subsquarrosum, Warnst. Bot. Gaz., xv. 226. 



Sargent Mt. (Faxon) ; — Lower Breakneck Pond ; Browns Mt. ; 

 Dog Mt. ; Southwest Harbor; Great Cranberry Isle (Rand). 



Var. imbricatum, Warnst. Bot. Gaz., xv. 226. 

 Sargent Mt. (Faxon & Rand); — Dog Mt. (Rand). 



S. Garberi, L. & J. Mosses N. A., 18. Var. squarrosulum, 

 Warnst. 



Tufts pale or bluish-green, low or even 20 cm. high, and 

 then quite similar in habit to *S^. compactum, var. squarrosu- 

 lum, ; branch leaves all with the apical half squarrose-recurved. 

 Warnst., Hedwigia, xxxii. (1893) 15. Very rare. Sargent Mt. 

 (Rand). The specimens are forma sphcBrocephahim, Warnst., 

 which is extremely robust, with the comal branches gathered into 

 a large globular head. This form is exceedingly rare, there being 

 only one other known station. 



Var. subsquarrosum, Warnst. 



Branch leaves generally merely curved outward, only here and 

 there squarrose. Warnst., Hedwigia, xxxii. (1893) 15. Rare. 

 Beech Mt. (Rand & Faxon) ; — Sargent Mt. (Rand). 



