104 ADDITIONS AND CORRECTIONS. 



the sheathing portion composed of large oblong hyaline cellules, which else- 

 where are very minute, subquadrate, opaque, and papillose ; costa stout, terete, 

 percurrent, spinulose on its upper surface, often (the lamina being reduced or 

 nearly obsolete) bearing on its apex a dense roundish cluster of numerous 

 oval-oblong 6 - 7-articulated bodies..— San Marcos, Texas, Wright. — Sterile 

 plant only known : it may be a Calymperes. 



Page 36. 



3\ Scliistidium Ag^assizii, Sulliv. & Lesqx. (Muse. Bor.-Amer., 



No. 137.) Near S. confertum ; but distinguished by its blackish, shining, denser 

 tufts ; narrower, longer, and Ungulate leaves, with an obtuse dentate apex ; 

 and an elongated asserted perichath. — Wet rocks, northern shore of Lake 

 Superior, Agassiz. 



Page 54. 



l*". FontinaliS gigautea (n. sp.). — Exceedingly like very large 

 forms of P. antipyretica, L. ; ramification not so dense ; leaves not reflexed on 

 the margin, otherwise the same ; capsule much smaller than in the small forms 

 of that species ; teeth of the persistome shorter, less slender, with 18-20 rather 

 distant articulations ; cilia appendiculate, not forming a tessellated cone, and, 

 like the teeth, smooth ; columella emergent, persistent. — White Mountains of 

 New Hampshu-e, Oakes, Tuckennan, James. — One of the largest mosses 

 kno-svn. Stems 12' - 15' long and 4" - 5" wide, not leafless below ; leaves bright 

 golden-yellow, when old copper-colored, never blackish. Essentially different 

 in its peristome from F. antipyretica, which has teeth with 27-30 articula- 

 tions, and which, like the cilia (always connected by cross-bars), are strongly 

 granulated. 



The true P. squamosa and P. antipjTctica have not yet been found within 

 our limits. P. gigantea appears to represent the latter, and P. Dalecarlica the 

 former species. 



3K FontinaliS IVovae-AngliaB (n. sp.). Dioecious? stems 6'- 10' 

 long, divided from near the base into pinnately ramulose divisions ; branch- 

 lets numerous, equidistant, 1' - 1^' long, at right angles to the stem; leaves (the 

 cauline twice as large as the ramuline) erect-patent, rather distant or loosely 

 incumbent, evenly concave, ovate or elongated-ovate, acute or slightly obtuse, 

 serrated at the apex, auriculate and narrowly decurrent at the base, the areolae 

 minute, linear (their length about seven times their width), acute at each end, 

 those near the summit much shorter and nearly rhombic, those of the auricula 

 large, oblong, pellucid, colored ; perichretia on various parts of the plant ; 

 perichsetial leaves, capsule, peristome, and calyptra as in P. biformis, Sulliv. — 

 In rivulets, Massachusetts, Oakes, James : Rhode Island, Olnei/ : Connecticut, 

 D. C. Eaton. Stems reddish. Foliage clear shining green. 



Oar specimens are sterile, except those received from Mr. James since the 

 foregoing pages were printed. F. Novre-Anglioe is a rather large species, 

 quite distinct from any before described, excepting P. biformis, the vernal state 

 of which it very closely resembles, and to which some sterile specimens col- 

 lected near New Haven, Connecticut, by Mr. Eaton, were erroneously referred 



