. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. 1. Leaves strongly squarrose 2. Leaves not noticeably squarrose ^. 2. Leaves strongly costate chrysophyllum. Leaves without costa or with costa short ami double 3. 3. Plants very slender ; alar cells not conspicuously enlarged or inflated kispidulum. Plants stouter; alar cells conspicuously enlarged and inflated slellatum. 4. Stem leaves cordate-ovate, abruptly slenderly acuminate; dioicous radicalc. Stem leaves broadly lanceolate, gradually narrowed to a very long sl
. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. 1. Leaves strongly squarrose 2. Leaves not noticeably squarrose ^. 2. Leaves strongly costate chrysophyllum. Leaves without costa or with costa short ami double 3. 3. Plants very slender ; alar cells not conspicuously enlarged or inflated kispidulum. Plants stouter; alar cells conspicuously enlarged and inflated slellatum. 4. Stem leaves cordate-ovate, abruptly slenderly acuminate; dioicous radicalc. Stem leaves broadly lanceolate, gradually narrowed to a very long slender acumi- nation; monoicous polygamum. 322 MOSSES WITH HAND-LENS AND MICROSCOPE Amhlystegium Juratzkaiium and A. Kocliii may be sought in dimpylium, buttheir leaves are spreading from the base and not bent, consequently they will lieflat on a slide while the species of Campylhim most likely to be confused withthem will not do so. Plaglolhecium striatellnm may be sought here, as it has the appearance of aCampy/iinn, but the stem is without central strand, the leaves are serrate and thecapsules strongly striate when }^^^ || fit
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