254 BULLETIN OF THE UNIVERSITY OP WISCONSIN. 



near apex in upper and lower cell angles, pores of outside half-elliptic, in 

 rows on commissures. Hedwigia 29:194. 1890. New Jersey; Connecticut. 



9. Sphagnum subnitens Russ. & Warnst. Plants when dry very soft 

 and with more or less of a metallic luster: stem leaves large, elongated, 

 isosceles-triangular, broad at base, not rarely with undulate margins in 

 middle, above abruptly narrowed into a longer or shorter broad-truncate 

 dentate and involute-edged point; border broad, much widened downwards 

 and formed of very narrow pitted tubular cells; hyaline cells in middle of 

 base wide and large, above rather shorter, rhomboidal, at margins narrow, 

 mostly without fibrils and pores, rarely with rudiments of fibrils and pores 

 at apex, longitudinally plaited: branches 3-4 in a fascicle, one or two pen- 

 dent: leaves of spreading branches larger or smaller, densely or loosely im- 

 bricate, often curved, erect-spreading, seldom somewhat secund or squar- 

 rose, never distinctly 5-ranked, from an ovate base narrowed upward to a 

 rather long dentate transversely or roundly-truncate involute-edged apex; 

 hyaline cells with numerous fibrils, pores on inner surface almost all near 

 margins, on outer surface more numerous: mostly monoicous, more rarely 

 dioicous: perichastial leaves large, ovate, edge very broadly bordered in 

 upper part and emarginate at rounded truncate apex: fruit very common. 

 Bot. Gaz. 15: 194. 1890. Newfoundland; Labrador; Miquelon Is.; Nova 

 Scotia; Maine; New Hampshire; Massachusetts; New Jersey; Connecticut; 

 Virginia; Indiana; California. 



10. Sphagnum microphyllnm Warnst. Plants very delicate, very 

 similar to small slender forms of S. fimbriatum, Wils.: stem leaves large, 

 about 2^ times as long as broad, above narrowed into a distinctly truncate 

 toothed apex; border narrow and broadened slightly below; hyaline cells 

 elongated-rhomboidal, without cross walls in apical half, in upper % to 3| 

 abundantly fibrillose, on inner side with many large round ringless pores 

 in middle of cell, on outside with half-elliptic pores along commissures: 

 fascicles 3 -branched, 1 pendent: leaves of spreading branches small, ovate 

 lanceolate, densely imbricate or with apex erect-spreading or almost squar- 

 rose, apex obtuse, toothed, in upper part margin involute, narrowly bor- 

 dered, when dry not shining; hyaline cells fibrillose, abundantly porose on 

 inside, pores round, ringless, outside with half -elliptic ringed pores in rows 

 along commissures. Hedwigia 30: 172. 1891. California. 



11. Sphagnum Labradorense Warnst. Stem leaves medium sized, Un- 

 gulate spatulate from a narrowed base, border narrow, broadened at base, 

 margin broadly involute on one or both sides, finely toothed at obtuse apex; 

 hyaline cells broadly rhombic, near base narrower and longer, divided with 

 one to four oblique walls, inner surface with large pores, outer surface 

 with very thin membranes, resorbed in apical part, without fibrils or in 

 apical part just the beginnings: fascicle of 3-4 branches, two spreading: 

 branch leaves ovate, about as large as stem leaves, apex broad, obtuse, 



