. 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. MOSSES WITH A HAND-LENS 37 ASTOMUM. A. SuLLiVANTii Schimp. is associated in habitat with the two mosses mentioned above and is also small and cleistocarp- ous so that it is better to treat it here, although it belongs in the Tortula family. The plants are larger than in Pleuridium or Bruchia and are readily distinguished when dry by the spirally twisted leaves and also by the fact that the spores begin to mature in the fall. The plants without fru
. 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. MOSSES WITH A HAND-LENS 37 ASTOMUM. A. SuLLiVANTii Schimp. is associated in habitat with the two mosses mentioned above and is also small and cleistocarp- ous so that it is better to treat it here, although it belongs in the Tortula family. The plants are larger than in Pleuridium or Bruchia and are readily distinguished when dry by the spirally twisted leaves and also by the fact that the spores begin to mature in the fall. The plants without fruit much resemble Weissia viridula and the cuts of that moss will help in the study of the leafy part of this. The lower part of the stem is omitted in the cut and the capsules are Figure 12. Astroinum usually much more concealed by the leaves cnspum (From Dixon . ^ , , and Jameson.) when dry; mdeed they are so hidden as to tingulshed from A '-'^ often overlooked, the plants are undoubt- Sullivantii with the gdly mistaken for sterile Weissia viridula. DITRICHUM.* D. VAGINANS (SuUiv.) Hampe, the Dark Ditrichum, has a habitat very similar to that of Ceratodon and at first sight might be confused with it. The capsules are much the same color and somewhat furrowed, but it is smaller with more erect symmetric capsules that have much less conspicuous furrows when dry. It matures its spores late in autumn, which of itself will be sufficient readily to distinguish it from Ceratodon. It is not frequent in the more northern portion of our range. D. TORTILE (Schrad.) Hampe, the Brown Ditrichum, is fre- quent throughout in moist sandy or gravelly soil by roadsides and in old fields. It is closely related to the preceding, but is smaller, with light brown capsules which mature at about the same time and are smooth when dry. It is more common than the Dark Ditrichum, especially northwards. It grows in more moist places of the same general nature, being especially fond of moist ban
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmosses, bookyear1905
