. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. L. HETEEOPHYLLA (Schrad.) Dum., the Variable Lophocolea, is a very common plant, bright green in shaded places, yellow- ish-green when exposed to the sunlight. Like Kantia and Geo- calyx it is found on rotten logs and on soil, but its ovate to oblong-ovate leaves are not all alike; many of the leaves, especially on young and tender stems, are as deeply two-toothed as in Geocalyx, but with a more rounded notch. On other parts of the same stem some
. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. L. HETEEOPHYLLA (Schrad.) Dum., the Variable Lophocolea, is a very common plant, bright green in shaded places, yellow- ish-green when exposed to the sunlight. Like Kantia and Geo- calyx it is found on rotten logs and on soil, but its ovate to oblong-ovate leaves are not all alike; many of the leaves, especially on young and tender stems, are as deeply two-toothed as in Geocalyx, but with a more rounded notch. On other parts of the same stem some of the leaves are only slightly notched or are entire. This variation of the leaf shapes is so constant as to afford a good means of recognizing the species. The leaves are usually some- what ascending. The under leaves are deeply cleft, but are too small to study readily with the lens. The perianth is deeply three-lobed and each lobe again lobed and toothed. The capsules are a little longer than broad and mature in May. It is more frequent in the lowlands than at higher altitudes. L. MINOR Nees. is more fre- quent, southwards. It is almost sure to be mistaken for Geocalyx when sterile. The underleaves are larger, f as long as the leaves are wide, and the edges of the leaves frequently bear minute gemmK which make the margin look darker and less distinct. The perianths are situated on the ends of the stems and branches. Another species, L. Aus- tinii Lindb. occurs with this, but cannot be distinguished with a lens. Bases of trees in woods and moist limestone rocks are said to be good places to collect these two species. The perianths are present in November and the spores probably mature in spring. Figure hi. Lophocolea heterophylla: plant natural size; portion of stem with leaves and perianth; two portions of stem with leaves and underleaves, one show- ing an antheridium, etc. (After Sullivant.). Figure 112, Lophocolea minor. Portion of stem X 2; another portion X 4; a portion
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmosses, bookyear1905
