^20 MUSCI. 1 Illinium. 



lanceolate, long-acuminate, snbdenticulate at the apex, nerveless or obscurely bicostate 

 at base ; quadrate alar cells lew or none : llowers dioecious : capsule long-cylindric, 

 subcernuous, curved, with broad compound annulus and obtuse conic or sub- 

 rostellato operculum: ciliohe 2, a little shorter than the processes. — Trans. Amer. 

 Phil. Soc. xiii. U ; SuUiv. & Lesq. Muse. Am.-Bor. Exsicc. 2 ed. n. 476; Sulliv. 

 Icon. Muse. Suppl. 103, t. 79. ll.plamijer, Mitten, Journ. Linn. Soc. viii. 41, t. 7 ] 



Oil slui.led lo.Us in woods, at Oaklaiul and in the Sii'iia Nevada (Uolmuur) ; Vanconver Island, 

 Lyall. Mitten's si-eeies aj^jear to diller only in the somewhat uioie naiiowly and aeutely beaked 

 oi)erciihini. 



41. H. Circinale, Hook. Stems creeping, slender, 2 to 4 inches long, flexuous, 

 simply pinnate, the numerous branches scarcely \ \w\\ long, or .souKitimes 2 indies 

 Ion" and flexuous: leaves sccund, lanceolate with u long-subulate subserrato apex, 

 strmigly circinnate, nerveless; pericluetial leaves erect; basal areolation vesicular, 

 yellow : capsule small, ovate upon a broad arcuate colhim, horizontal or subpendu- 

 lous ; operculum short-conic : ciliohe 1 or 2, rather shorter than the processes. — 

 Muse. Exot. t. 107; Sulliv. & Lestp 1. c, n. 474. //. Sajuoieli, Muell. in Flora, 

 1875, 91. 



In the Coast Ranges, on redwoods (Bolandcr) ; at the base of trees, Siskiyou Mountains 

 (Brewer) ; Washington Territory (Pickering) ; Vancouver Uhind, Li/all, Menzics. 

 * * * Stem pi'ostrate and ascemlinr/, irrerjularl i/ hranehed : leaves secund or 



spreaduuj ereri/waij, hivadlij ovate to loii/j-lunceolate, shovtlij or ohsoletehj 1-2- 



fostate, areola'tion very nurrutvlij linear. — LiMNOiiiu.M. 



42. H. arcticum, Somraerf. Branches elongated, crowded, simjjle, rigid, obtuse, 

 1 or 2 inches long or more : leaves reddish or yellowish brown, widely spreading, 

 roundish, subacute or obtuse, entire, bicostate to the midiUe, areolation not dilated 

 at tho angles : llowers nionojcious : capsule .suberect or ceruuous, oval upon u dis- 

 tinct narrow colluin, arcuate when dry ; annulus double ; operculum short-conic, 

 acute : ciliolae short. — AVahl. Fl. Lapp. Suppl. t. 2 ; Lruch & Schinip. 1. c, t. 578 ; 

 Wilson, 1. c, t. 5G ; Berkeley, Brit. Moss. t. 7, fig. 3. 



On Mount Uana, in streams, submerged (Bolumlcr); Oregon (Hall); Roeky Mountains of 

 British Ameriea (Drummoml) ; Europe. 



H. EUGVniUM, Schimp. Leaves broadly ovate- to oblong-hmeeohite, shortly acuminate, sub- 

 falcate-secund, more or less complicate aiul contorted, shortly bicostate, the alar areolation large, 

 pellucid and yellow : flowers niMhaeious : capsule ovate-oblong, cernuous-incurved ; annulus very 

 broad : cilioliE nodose. — Sulliv. k Les^i. 1. c, n. 303 (2 ed. n. 450). I.imnuhiam ciujijrunn, 

 Bruch k Schimp. 1. c, t. 579. Oregon (Hall) ; in the Alleghanies and While Mountains ; also 

 in Europe. 



H. ociiu\CF.UM, Turner. Stem and branches elongated : leaves falcate-secund, ovate- to 

 elon-rated oblong-lanceolate, short- or long-a.'uminate, more or le.ss contorted, striate, costa single 

 or forked, reaching to the middle ; iiericluetium s-juarrose : llowers dueeious : capsule ovate or 

 oblon", arcuate ujion an erect attenuate collum ; annulus broad, triple: ciliohe very slender. — 

 Wilson, 1. c, t. 58 ; Sulliv. k Ees(i. 1. e., n. 305. Limnobium uchraccum, Brucli & Schimp. 

 1. c, t. 580. Oregon (Hall) ; White iMouiitains ; Europe. 

 * -k * * Sterna ji'oinateJij or hlplnnatehj branched: leaven sltbuna, ovnte-rordate 



to ohlong, spreading every way or rarely secund, shortly costate : dia-cions. — 



Hylocumiu.m. 



H. SPLENDENS, Hedw. Stcms 2 to 6 inches long, interruptedly 2-3-pinnate, villous : .stem- 

 leaves broadly ovate-oblong, eirrhose-acumiiiatc, concave, serrulate, nmrgiii below recurved, bi- 

 costate at base: capsule ovate, ceruuous, curved ; operculum with slender acute beak. — Sjtec. 

 t. 67 ; En"l. Bot. t. 1424. Hi/hcomiian splcndcns, Schimi>. Bryol. Eur. t. 4S7. Oregon (I'lck- 

 ering] Newberry, Hall); Vancouver Island (Lyall, Wood) ; Atlantic States ami Euioi)e. 



H. TRIQUETRUM, Linn. Stem erect, 6 inches higli or more, rigid, sub|>innate, witli drooping 

 branches an inch long : leaves squarrose, triangular-.aeumiiiat« from a cordate clasping lias.', 

 plicate-striate and bicostate to the middle, serrulate above : capsule roundish ovate, gibbous, 

 cernuous; annulus simple; operculum conic-mamillate. — Engl. Bot. t. Iti22. Hylocomtuin 

 triquetrum, Schimp. 1. c, t. 49L 



Cascade Mountains, Oregon (Kcwhcrry) ; Columbia River (Hall) ; Europe. 



