IhjpniCM. MUSCI. 415 



ovato, lecurved-apiculato, very concave, minutely serrate above, margin flat, costa 

 ceasing (excurrent) above the middle : capsnlo cerimons or liori/ontal on a very 

 rough pedicel an inch long, ovate-oblong, al)ruj)tly incurved ; operculum convex- 

 conic, apiculate. — Engl. Dot. t. 2181); Wilson, Hryol. Brit. t. 35; Sulliv. & Lesq. 

 1. c, n. 508, 509. ll.hlandum, Hook; Engl. Jiot. Supj)]. t. 2715. Sderopodiinn 

 illecehrum, Scliimp. Ihyol. Eur. t. 557. 



Oa j'lomul and rocks, S;iii Fiaucisco, Oakland, and in the Sierra Nevada {liolander) ; Europe. 

 Several foinis occur, sotnctinies in conijiact dark brown tufts, with densely inibri(;ated ovate obtuse 

 nearly entire leaves and julaceous branches (in water, Yoseniite Valley), or subdendroidal, with 

 acute nearly entire leaves. 



23. H. Californicum, Lesq. Loosely cesi)itose, with rather long filiform root- 

 ing branches : leaves spreading and loosely imbricated, ovate lanceolate, acuminate, 

 concave, entire or nearly so, tlie stout nerve ceasing below the apex, alar areolation 

 ovate-quadrate and more or lessgranulose ; pericha^tial leaves broadly ovate-lanceolate 

 with long filiform acumination : capsule ovate-cylindric, pale green, cernuous upon a 

 long reddish pedicel papillose only above, somewhat constricte<l below the mouth, 

 at length erect; operculum broad-conic, acutish : peristome red, the inner yellow, 

 ciliohu solitary or in jjairs. — Trans, Amer. Phil. Soc xiii. 13 ; Sidliv. k Lesq. 1. c, 

 n. 511. 



On rocks and dry sand near the bay of San Francisco, Bohindcr. 



* =:■ Opeiunihun lonrj-beaked. 



-t— Branchinf/ irregular: learea spread oxj eqiidlbj or subconrplannte : areolation 

 narroidu rhombic-Iiexagonal and suhjlexuase, dilated at the angles: ]jedicels 

 smooth. — KiiVNciiosTEGlUM. (^lihi/nchosteginm, Schimp.) 



24. H. rusciforme, Weiss. Amphibious, rather rigid, deep or dusky green ; 

 branches siiljfascicled, rather long, often simple and naked below, arcuate : leaves 

 firm, somewhat flattened, roumlish ovate, shortly acuminate, serrate, costate nearly 

 to the apex, areolation narrowly long-rhombic : capsule ovate, cernuous ; annulus 

 broad ; operculum as long as the capsule : ciliola) (2 or 3) nearly e(pialling the red- 

 dish teeth. — //: nisrI/oUum, Neck. ; Engl. Dot. t. 1275; Fl. Dan. t. 2389. //. 

 riparioidts, Iledw. Muse. Frond, iv, t. 4. Rhi/nchodegium rusci/onne, Bruch &, 

 Schimp. 1. c, t. 515. 



In a stream near Monte Diablo (Ilillebrnnr!, Bolnndrr) ; Atlantic States and Europe. //. liOt/ir, 

 Austin (Couit. IJot. Gaz. iii. 31), desciibcil from insullieient material, is referred by Mr. Austin 

 to this group ; collected in California by Mrs. J. Rny. It is said to be a small species, with 

 straight stems, distant ercctish leaves with oval- and oblong-rhombic ajeolation, etc. 



•4- -4- Branching more or less jiinnate : areolation as in the last. — Eurhynchium. 

 (Eurhgnch iiun, .Schinq>.) 



++ Pedicels smooth : leaves thiyi, suhsidcate. 



25. H. Strigosum, Hoffm. Stem creeping or decumbent, an inch long or more, 

 the atteiuiated branches more or less erect, h inch long : leaves spreading, crowded, 

 widely cordate-ovate, short-acuminate or obtusish, concave, costate above the middle, 

 serrate to the base : male plants parasitic on the female : caj)sule cernuous or sub- 

 horizontal, ovate-ol)long or incurved-cylindric : ciliola3 in pairs, slender. — AVilson, 

 Bryol. Brit. t. 55. // pulrhelhim, Hedw. Spec. Muse. t. G8. Eurhynchium strigosum, 

 Bruch ife Schimp. Bryol. ¥mv. t. 519. 



On wet grotind at Calaveras (\vo\'q {Bolnndrv) \ Fort Colville and (Jalton Jlountains (ZyaW) ; 

 Uinta Mountains ( H'ctsnu) ; Atlantic States, Chili, and Europe. 



++ ++ Pedicels rough cnrd. 

 2G. H. Stokesii, Turner. Branches ascending, sim])le below, densely pinnately 

 or bipinnately l)ranched above : cauline leaves remotish, squarrose, acuminate-cordate, 

 on the branches smaller, erect-spreading, broadly ovate-lanceolate, sermte to the 



