The Type Locality of Sphagnum faxonii

Abstract

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 1.4o-I.45 mm. long and 0.30-0.35 mm. wide, at the broad truncate apex coarsely threeor 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 reinforced by numerous fibril-bands, on the inner surface of the leaf with comparatively few generally unringed medium sized pores in the cell angles, on the outer surface with hardly any spores 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 strongly under-arching hyaline cells.-Massachusetts, i6 Sept. I891, leg. Faxon. This species may be distinguished from SfPh. cuspidatum by the very narrowly margined branch leaves, from S'ph. angustilimbatum by much smaller stem leaves which are not fibrillose to the base, and which have the margins broadened below, as well as by the mostly three-branched fascicles with equally divergent branches. Friendenau, 25 Feb. 19o8.