BY L. RODWAY. 209 



1913. 



<;losely, acutely serrate; nerve slender. Seta red, 1.5 cm., 

 rough ; capsule inclined, arcuate, oblong-cylindric, 1.7 mm., 

 ■dark, base attenuated, mouth very wide. 



St. Crispin's Well, Mt. Wellington ; Cheshunt- 



Drepanocladus WarDst. 



Robust elongating mosses growing in water, branches 

 few and irregular, the leaves secund and cui'ved in a sickle 

 form at the ends of the shoots. Leaves lanceolate with a 

 slender apex, imbricate; nerve vanishing above the mid- 

 dle ; cells narrow vermiform, only those at the base rather 

 broader. Seta long ; capsule oblong with a tapering neck 

 inclined or rarely erect ; lid conic, rather short ; peristome 

 as in Hypnum. 



A small group of water mosses distinguished by their 

 habit and sickle^shaped leaves. 



Drepanocladus Jluitans (L.) Warnst. 



Stems procumbent, often 12 cm. Leaves narrow lanceo- 

 late, tapering to a long slender apex, more or less falcate, 

 2.5 mm.; margin entire. 



Common in the bed of creeks. 



Drepanocladus hrachiatus Mitt. 



Very close to D. Jluitans , but more robust. Leaves fal- 

 cate, more spreading, lanceolate, acute, up to 5 mm. 

 In the bed of creeks, often growing with D. fluitans. 



Campylium Sull. 

 Slender, prostrate, elongating, branches few and irregu- 

 lar. Leaves close set, broad below with a sharply divari- 

 cate acute point ; nerve single, bold, lost in the apex ; cells 

 oblong, longer towards the base. Seta slender; capsule 

 inclined cylindric; lid short, conic; peristome as in 

 HypnuT/i. Living in water or very wet places. Very 

 seldom fruiting. 



Branches few relaxum 



Branches many. 



Nerve defined ... decussatum 



Nerve faint molle 



Campylium relaxum (H.f. et W.) 

 Stems simple, often 5-7 cm., dark green. Leaves bioadly 

 ovate with an acute acuminate point, 1.3 mm.; margin 

 obscurely subseaxulate ; nerve bold, lost in the apex; cells 

 irregularly linear-oblong. 

 Fort*h River Falls. 



