1908] Warnstorf,— Sphagnum Faxonii ES 
nently lovable, unselfish, and modest,— such a man as I have but 
seldom come in contact with during my life. He translated my 
“Contributions to the Knowledge of the North American Sphagna” 
for publication in the Botanical Gazette,! but although I urged him 
to do so, he did not associate his own name with the articles. I hope 
that in describing the following moss I have permanently connected 
the name of this truly exceptional man with his favorite genus. 
SPHAGNUM Faxonit Warnst. Forming closely compacted tufts as 
much as 12 cm. deep, below grayish-brown, above pale yellowish, in 
habit similar to a weak SpA. cuspidatum var. plumosum. Cortex 
of two or three layers of cells, plainly differentiated from the strong, 
pale or yellowish woody axis. Prosenchyma cells widened and thick- 
walled. Stem leaves (both dry and moist) spreading, isosceles-triangu- 
lar or in part almost triangular-linguiform, 0.75-1.00 mm. long and 
0.50-0.60 mm. broad, at the narrow truncate apex minutely denticu- 
late, otherwise entire, with broad margins which are greatly expanded 
below the middle. Hyaline cells either not at all or only occasionally 
septate, fibrillose in the upper third or even to the middle of the leaf, 
on the inner surface mostly with a few unringed pores between the 
fibrils, on the outer surface, toward the apex, with a few small corner- 
pores. Fascicles moderately crowded, generally three- but occasion- 
ally four-branched. Branches almost equally strong and spreading, 
up to 12 mm. in length, attenuated toward the apex; their leaves 
crowded, when dry not or hardly at all undulate, when moist slightly 
turned to one side, lanceolate, on the average 1.40—1.45 mm. long and 
0.30-0.35 mm. wide, at the broad truncate apex coarsely three- or 
four-toothed, narrowly margined by two or three rows of elongated 
cells, involute clear to the base so as to be almost tubular, entire. 
Hyaline cells reénforced by numerous fibril-bands, on the inner sur- 
face of the leaf with comparatively few generally unringed medium 
sized pores in the cell angles, on the outer surface with hardly any 
pores except in the lower cell angles, but occasionally weakly ringed 
pseudo-pores occur in short rows along the commissures of scattered 
cells. Chlorophyll cells in cross-section usually trapezoidal and 
exposed on both sides of the leaf, with the longer of the parallel sides 
exposed on the outer surface, but triangular cells occur sporadically, 
in which case they are enclosed on the inner surface of the leaf by the 
1 Bot. Gaz, XV pp. 127-140, 189-198, 217—227, 242-255, (1890.) 
