. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. sporophytes appear inlate autumn or early spring and the capsules mature in June or early July. The Common Hair-cap is variable in nearly all its parts. The is a form with very long whitish membranous and long-awned peri-chaetial leaves. The var. uliginositiii has the leaves spreading-recurved whendry; the stems more slender and less rigid than usual. On Mt. WashingtonI find a form of this variety that differs from the ordinary P. commune mainlyin the
. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. sporophytes appear inlate autumn or early spring and the capsules mature in June or early July. The Common Hair-cap is variable in nearly all its parts. The is a form with very long whitish membranous and long-awned peri-chaetial leaves. The var. uliginositiii has the leaves spreading-recurved whendry; the stems more slender and less rigid than usual. On Mt. WashingtonI find a form of this variety that differs from the ordinary P. commune mainlyin the spreading-recurved leaves and smaller capsule with longer beak; calyptranot reaching below the base of the capsule when fresh and fully is, I believe, the first record of var. uliginosuni east of the Rockies. Itvaries so much from the typical form of the variety that I have ventured tocall it var. *uliginosum forma Jfashiiigtouunnini. P. Ohioense R. & C. (Ohio Hair-cap) without the sporophyte, is notreadily distinguished from the Common, as leaves and general appearance * See the Bryologist, May. FlGlRE 15 I, lo, and II. Pdlylriihum Sinilhi/r. 2, 3. 12, and 4. /. Ohiiirnfc. 5. /. cotnmnnc. 6. / lummiinr,pressed when wet with leaves expamled. 7. /. (iimmunc iilii^iiiiisiim forma lliisliitiiiliiiiiiiinim. S. /. mm-mune uliginosiim, from the State of Washington. 9. P. rrtmmiinc perii^oniale. showing; the elongated|ierich:ptial leaves. are very similar. But with the sporophyte present the distinctions are ¥\gs. I) and </, note that the capsule of the Common Hair-cap is almost cubi-cal, that the lid has a very short beak, antl that the capsule is entirely coveredby the calyptra. The capsule of the Ohio Hair-cap (c ) is elongated, slender,with a tapering neck; lid much longer, beaked. The lidand the calyptra of the Ohio Hair-cap fall early in June, verysoon after the spores are ripe, and it is not always easy tofind either in position; but, if the
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