HYPNEI. 113 



57. H. brevirostre, Ehr. ; stern erect, arched, clothed with 

 branched paraphylla, bipinnato-ramulose ; stem-leaves widely 

 spreading, subsquarrose, suddenly acuminate, plicato-striate ; 

 branch-leaves spreading, ovate, acuminate ; all toothed and 

 two-nerved ; sporangium ovate, ceruuous ; lid conical, subros- 

 trate. Hook. $ Wils. t. Ivii. ; Eng. Bot. t. 2865. ; (Plate 9, 

 fig. 2) ; Moug. % Nest. n. 423. 



In mountainous woods. Scotland, England, Ireland, and 

 Wales. Bearing fruit in winter. 



Dioicous; forming green, loose tufts, several inches in 

 length. Stem erect, arched, proliferous ; innovations irregularly 

 bipinnate, often rooting at the tips, clothed with branched 

 paraphylla, whose extreme divisions are very acute; stem- 

 leaves squarrose or occasionally secund, cordate or even del- 

 toid at the base, with distinct auricles, strongly toothed, 

 abruptly acuminate, two-nerved, the nerves generally united 

 for some distance ; stem-leaves more ovate and less abruptly 

 acuminate ; cells narrow, not sensibly enlarged below ; fruit- 

 stalk even, about an inch long ; sporangia solitary or aggre- 

 gate, ovate, turgid, thin, somewhat translucid, horizontally 

 cernuous ; lid conical, with a short, oblique, cylindrical beak, 

 which has a little distinct point at the tip. 



Far more robust than H. umbratum, and very distinct in the 

 leaves and subrostrate lid. 



D. Stem more or less erect, pinnate, without paraphylla, bearing 

 fruit in the upper part ; leaves more or less squarrose. 



58. H. squarrosum, L.; stem slender, mostly erect, slightly 

 divided, with a few scattered branchlets ; stem-leaves crowded, 

 concave, broadly ovate below and erect, attenuated upwards 

 and reflected, slightly serrated, substriate and two-nerved at 

 the base ; branch-leaves smaller, less squarrose ; fruitstalk 



i 



