—54— 



median cells linear-rhomboidal to linear hexagonal, 7-10:1; alar and apical 

 cells much shorter and broader; stem leaves larger, 2-3 mm. long, ovate, 

 entire, apiculate. 



Inner perichaetial leaves oblong to oblong-ovate, slightly serrate at the 

 apex, long acuminate, thinly costate, costa often short or wanting: leaf 

 brownish yellow below: seta 2.5-3.5 cm. long, reddish brown; capsule 

 lighter in color, cylindric, a.'bo\it''4cm»i.long, s-4-' ' .' operculum often remain- 

 ing attached to columella; peristome reddish-brown; spores 0.013-0.022 

 mm. in diameter, maturing in autumn. 



Type locality European, probably vSwedish. 



Wet ground, borders of streams, swamps and lakes, especially in the 

 mountains ; more common than is indicated by Lesq. & James in the Manual. 

 Ranging through the northern and western part of the continent from New 

 Brunswick to St. Paul Island, Behring sea; south to New Jersey, Colorado 

 and California. Not recorded from Pennsylvania or the North Central 



States. 



A form from Oregon with "leaves narrowed at base, less serrate at 

 apex, sometimes subentire" is called var. Oregonense by Renauld and 

 Cardot. 



2. Clim.^cium Americantm Brtd. Sp. Muse. Stppl. part 2:45- 1812. 



Plants bright green, 5-7 cm. high; branches usually straight and taper- 

 ing; branch leaves closelv imbricate, 2 x i mm.; upper oblong-lanceolate, 

 broadly auriculate : lower ovate to ovate-lanceolate, denticulate below, 

 sharply serrate above, more acute than in the last, bisulcate. costate nearly 

 to the apex; leaf cells more nearly uniform than in C. dcndroides\ median 

 cells oblong-hexagonal 5-7: i; stem and perichaetal leaves as in C. den 

 droides. Seta 2-3 cm. long, brown : capsule cylindric, brown, about 6 mm 

 Ion (T ^-6:1: peristome reddish brown, teeth sometimes slightly perforated: 

 spores o. 014-0. oiS mm., maturing in autumn. 



Distinguished from C. dendroides by its more closely imbricated leaves, 

 broadly auriculate branch leaves, longer capsules and leaf cells. 



Swamps, wet soil and rocks, rotten logs, etc. 



This species is exclusively American, It is found in the northern and 

 eastern States, ranging from Canada to North Carolina and probably south 

 to the Gulf; west to Minnesota, Iowa, Illinois and Missouri. ■' Rocky moun- 

 tains eastward," Roll in Hedwigia, 36: 46. 1S97. 



3. Ci.i.MACiUM KiN-nnERcii (R. & C.) Grout. 



C. Americanum Kindbergii '^. & C. Bot. Gaz. 15: 1S90. 



Plants dark green, almost black, below rarely lighter green, growing 

 typically in dense tufts or cusliions in very wet swamps, somewhat tree- 

 like in habit, but growing so compactly together as to obscure the den- 

 droid appearance. On the edges of pools and on sticks and stones, in 

 pools the stems are decumbent, irregularly branching, often floating, den- 

 droid secondary stems rarely present. 



