366 Musci. jyuhjiuodon. 



liyaline at base. Caly[)tra long, cucullate. Capsule erect, long-pedicelled, loiig- 



cylindric, Avitli rostrate operculuni and distinct annulus. I'eristomt! ol' 10 rather 



long Hat linear-lanceolate i'ugacious teeth, subentire or more or h^ss divided. 



A genus variously umlcrhtood ami ol'tiMi iin'Midctl iu Lcjitutrichum and Trkhoslomum. Scliiiniier 

 refers to it about a di)icn European speeies. It dillers tVoiu Tricliustoiauni in its softer and more 

 papillose leaves au<l in tlic llattened teeth of the peristome without basal membrane. 



1. D. rubellus, Bnich & Schinii). Stems slender, \ to 1 inch high, in loose 

 mats reddisli-lerruginous below : leaves divaricately spreading, crisped M'hen dry, 

 lanceolate and linear, concave and carinate, with revolnte margins and i)apillose 

 botli sides, the costa ceasing at the apex : male ilowers naked in the axils of tlie 

 very thin shuathing pericluetial leaves : caj)sule long-cylindric to oblong or oval, 

 green becoming brownish ; annnbts very fragile : teeth ])ale or reddish. — Bryol. 

 Eiir. t. 185; Wilson, Bryoh Brit. t. 14; Sidliv. in Gray's Man. 2 ed. t. 2; SuUiv. 

 k Lesq. Miisc. Am.-Bor. Exsicc. n. lOG (2 ed. n. 157). 



Near Soda Sprin;:;s, Tuohunne Canon (Bolnndcr) ; in the mountains of Nevada and in the Uin- 

 tas ( Walsoii) ; in the .Atlantic States, Euro])e and Afriea. Very variable. 



2. D. cylindricus, Brnch & Schimp. Stems \ to 1 inch high, forming loose 

 flat mats deep or yellowish green above, whitish below : leaves linear-lanceolate, 

 flexuose-spreading, crisped when dry, the flat margins subiindnlate and minntely , 

 crenulate, costa slightly excurrent : capsule narrowly cylindrical, pale brown on a 

 yellowish })edicel, Avitii subidate-beaked o|)erciihim, narrow persistent annulus, and 

 very fugacious i)eristome. — Bryol. Kiir. t. 187; Wilst)n, Bryol. Brit. t. 33; SuUiv. 

 & Lestp 1. c, n. lOG'' (2 ed. n. 158). 



West Humboldt Mountains, Nevada ( U'alsun) ; in the Eastern States, Europe and India. 



12. LEPTOTRICHUM, Hampe. 



Slender cespitose perennials, terrestrial or on rocks. Leaves several-ranked, lance- 

 subulate, smooth and shining, not crisped when dry, the distinct arcolation minuto 

 and narrowly rectangular above, looser, more hexagonal and hyaline at base ; costa 

 mostly excurrent. Flowers monoecious or dioecious, terminal and bud-like or the 

 male axillary. Calyptra cucullate. Capsule erect on a long straight pedicel, ovate to 

 cylindrical ; operculum rostrate. l*eristome of IG rather long teeth cleft to the base, 

 or the filiform papillose slightly hygroscopic divi-sions more or less connate. 



Closely allied to the following genus, with wliieli it is often unitc-d. Eight .speeies are Euro- 

 pean, five of them also North Ameriean ; ten others are South Ameriean. 



1. L. Schimperi, Lescp Stems low, 3 or 4 lines high, subsimple, yellowish 

 green : leaves .spreading, ilexuous or falcate-secuml, long and narrowly subulate from 

 an ovate base, subdenticulate at the apex; costa slender, excurrent : inllorescence 

 monoecious, the male flowers axillary, Avith large short and obtuse perigonial leaves ; 

 perich.-etial leaves broadly clasping, long-attenuate : capsule brown, ovate-cylindrical, 

 upon a yellowish pedicel scarcely over an inch long; operculum h)ng-conic, dark 

 red : teeth pale yellow, liliform and smootii, upon an orange or reddish basilar niem- 

 brane thrice broader than the annulus : spores very large. — Mem. Calif. Acad. i. 9 ; 

 Sidliv. Icon. Muse. Supfd. 37, t. 24. 



In the Coast Ranges, Jleiuloeino County, Bolandcr. Resembling L. pnllidnm, Hampe, of the 

 Atlantic States and Europe. 



L. FI.EXICAU1,E, Hampe, of Europe, was collected by LijkH in the Cascaile Mountains of 

 Washington Territory. It is taller (1 to 3 inches), much branched and more densely cespitose, 

 with long-subulate leaves from a lanceolate base : inllorescence dia-cious : capsule small, upon a 

 very slender reddish pedi.td ; teeth une.|ual, slender and fiagile : spores very minute. — Tncho- 

 sl.omum flcxicauk, Hni.h i .Sehimi.. 15ryol. Eur. t. 180 ; Wilson, iiiyol. I'.rit. 110, t. 4'2. Cijno- 

 dontunnflcxkaulc, Sihwacgr. Sujipl. i. 113, t. 2i>. 



