HYPNACEAE 105 



H. Haldanianum Grev. Common on decaying wood in damp 

 shaded places. Autumn-winter. 



H. imponens Hedw. Common on humus and decaying wood 

 in damp shaded places. Autumn-winter. 



H. laxepatulum L. & J. "In cedar swamps, northern N. J. 

 and N. Y.," Muse. App. 341 (as Rhynchostegium recurvans, 

 var.). 



H. molluscum Hedw. Common except S. Id., rarely fertile. 

 Summer. 



H. pallescens (Hedw.) B. & S. "On Kalmia latifolia in 

 swamps in the mountains of N. J.," Muse. App. 414. 



H. patientiae Lindb. Common in damp places, usually on 

 soil. Spring. 



H. pratense Koch. On soil in wet places. "Common in 

 N. J.," Muse. App. 425; Jamaica, L. Id. (27509)!!; Palisades, 

 N. J. and New Dorp, S. Id., Bx! Spring. 



H. recurvans (Mx.) Schwaegr. Common. Autumn-winter. 



Var. resupinatum (Wils.) Sch. Orient, Latham!! 



H. reptile Mx. Common, often depauperate and hard to 

 recognize. Bases of trees, stones and decaying wood. Mid- 

 summer. 



H. tenuirostris (B. & S.) Broth. "Northern part of the 

 state," Geol. Survey N. J. 



RAPHIDOSTEGIUM (B. & S.) De Not 



Mostly slender mosses with irregular branching; paraphyllia 

 lacking; leaves symmetric and equally spreading or somewhat 

 secund, narrowed to the insertion, not decurrent, concave, not 

 plicate; margins entire or nearly so {except in Novae-Caesar eae) , 

 strongly reflexed in most cases; costa lacking or short and double; 

 leaf cells linear-flexuose, shorter and broader at base; at basal 

 angles j-8 large inflated pellucid, hyaline or colored cells, very 

 conspicuous; capsules small, oblong-ovoid, more or less unsym- 

 metric and inclined (excl. R. adnatum); lid beaked, peristome 

 usually perfect. Cell walls of outer layer of capsule strongly 



