THAMNIUM — DALTONIA— PTEEYGOPHTLLUM. 187 



Trunks of trees and shady rocks. October, Nov. 



98. THAMNIUM:, Schp. 



433. T. alopecurum, Linn. St. 2 — 3 inches, naked 

 below, pinnately branched above. L. spreading, ovate- 

 lanceolate, acuminate, somewhat concave, serrate, 

 strongly nerved nearly to apex. Caps, shortly ovate, 

 cernuous or erect, lid with a long, oblique beak. 

 Dioicous. 



Moist woods, rocks, &c. November. 



Tribe xxvii. Hooeeeiace^. 



Fam. 1. Daltonise. 



99. DALTONIA, Boolter and Taylor. 



434. D. splachnoides. Smith. St. \ inch, tufted, erect. 

 Br. fastigiate. L. crowded, suberect, linear-lanceolate, 

 acuminate, slightly keeled, entire, nerve vanishing 

 below apex ; per. 1. small, ovate. Caps, small, oval, 

 oblong, suberect, lid large, with a long, straight beak. 



October, November. 

 Subalpine moist shady rocks and trees. Eare. 



Fam. 2. Hookeriae, 

 100. PTERYGOPHYLITJM, Brid. 



435. P. lucens, Linn. St. 1 — 3 inches, procumbent, 

 with irregular complanate branches. L. complanate, 

 large, roundish ovate, obtuse, entire, nerveless, areolse 

 large, hexagonal, pellucid. Caps, roundish, elliptical, 

 almost pendulous, lid conical, suddenly tapering into 

 a long, straight beak. Monoicous. 



November, December. 

 Moist banks, stones in streams, &o. 



